LYONDELL CHEMICAL CO
S-4/A, 1999-07-12
PETROLEUM REFINING
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<PAGE>


   As filed with the Securities and Exchange Commission on July 12, 1999

                                              Registration No. 333-81831

                                                               333-81831-01

                                                               333-81831-02

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                               ----------------

                              Amendment No. 1

                                    to
                                    FORM S-4

            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                               ----------------
                           LYONDELL CHEMICAL COMPANY
                       LYONDELL CHEMICAL WORLDWIDE, INC.
                       LYONDELL CHEMICAL NEDERLAND, LTD.
         (Exact name of each co-registrant as specified in its charter)

<TABLE>
<S>                                   <C>                                               <C>
              Delaware                                      2911                           95-4160558
              Delaware                                      2911                           51-0104393
              Delaware                                      2911                           51-0110124
    (State or other jurisdiction      (Primary Standard Industrial Classification Code  (I.R.S. Employer
  of incorporation or organization)                       Number)                      Identification No.)
</TABLE>

                                                Robert J. Millstone
   1221 McKinney Street, Suite 700       Vice President and General Counsel
        Houston, Texas 77010              1221 McKinney Street, Suite 700
           (713) 652-7200                       Houston, Texas 77010
  (Address, including zip code, and                (713) 652-7200
          telephone number,           (Name, address, including zip code, and
    including area code, of each                 telephone number,
     co-registrant's principal       including area code, of agent for service
         executive offices)                   for each co-registrant)

                                     Copy to:
                               Stephen A. Massad
                             Baker & Botts, L.L.P.
                                One Shell Plaza
                                 910 Louisiana
                              Houston, Texas 77002
                                 (713) 229-1234

   Approximate date of commencement of proposed sale of the securities to the
public: As soon as practicable following the effectiveness of this Registration
Statement.

   If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [_]

   If this Form is filed to register additional securities for an offering
under Rule 462(b) pursuant to the Securities Act of 1933, as amended (the
"Securities Act"), check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]

   If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]
                               ----------------
                        Calculation of Registration Fee


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
- --------------------------------------------------------------------------------------------------------------------
                                                          Proposed maximum     Proposed
   Title of each class of securities        Amount to     offering price  maximum aggregate         Amount of
            to be registered              be registered    per note (a)   offering price (a) registration fee (b)(c)
- --------------------------------------------------------------------------------------------------------------------
<S>                                       <C>            <C>              <C>                <C>
9 5/8% Senior Secured Notes, Series A,
 due 2007...............................  $  900,000,000       100%        $  900,000,000           $250,200
9 7/8% Senior Secured Notes, Series B,
 due 2007...............................  $1,000,000,000       100%        $1,000,000,000           $278,000
10 7/8% Senior Subordinated Notes due
 2009...................................  $  500,000,000       100%        $  500,000,000           $139,000
Guarantees of 9 5/8% Senior Secured
 Notes, Series A, due 2007..............              --        --                     --                 --
Guarantees of 9 7/8% Senior Secured
 Notes, Series B, due 2007..............              --        --                     --                 --
Guarantees of 10 7/8% Senior
 Subordinated Notes due 2009............              --        --                     --                 --
- --------------------------------------------------------------------------------------------------------------------
 TOTAL.................................   $2,400,000,000                   $2,400,000,000           $667,000
- --------------------------------------------------------------------------------------------------------------------
</TABLE>
- --------------------------------------------------------------------------------
(a) Estimated solely for the purpose of calculating the registration fee under
    Rule 457(f) pursuant to the Securities Act.
(b) Pursuant to Rule 457(n) of the Securities Act, no separate registration fee
    is payable for the guarantees.

(c) The registration fee payable in connection with this Registration Statement
    was submitted in connection with the initial filing on June 29, 1999.

   The co-registrants hereby amend this Registration Statement on such date or
dates as may be necessary to delay its effective date until the co-registrants
will file a further amendment which specifically states that this Registration
Statement will thereafter become effective in accordance with Section 8(a) of
the Securities Act or until the Registration Statement will become effective on
such date as the Commission, acting pursuant to said Section 8(a), may
determine.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>

The information in this prospectus is not complete and may be changed. We may
not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an
offer to sell these securities and we are not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.

PRELIMINARY PROSPECTUS
                                 Subject to completion, dated July 12, 1999

                           Lyondell Chemical Company

                                 $2,400,000,000

                               Offers to Exchange

$900,000,000 9 5/8% Outstanding       for   $900,000,000 9 5/8% Registered
Senior Secured Notes, Series A, due         Senior Secured Notes, Series A,
2007                                        due 2007

$1,000,000,000 9 7/8% Outstanding     for   $1,000,000,000 9 7/8% Registered
Senior Secured Notes, Series B, due         Senior Secured Notes, Series B,
2007                                        due 2007

$500,000,000 10 7/8% Outstanding      for   $500,000,000 10 7/8% Registered
Senior Subordinated Notes due 2009          Senior Subordinated Notes due 2009

The new notes:

 . will be freely tradeable and registered under the Securities Act of 1933

 . are otherwise substantially identical to the outstanding notes

 . will accrue interest at the same rate per annum as the outstanding notes
  payable semi-annually in arrears on each May 1 and November 1, beginning
  November 1, 1999

 . will rank equally with the outstanding notes that are not exchanged

 . will not be listed on any securities exchange or on any automated dealer
  quotation system

 . are guaranteed by our subsidiaries Lyondell Worldwide and Lyondell Nederland

The exchange offers:

 . expire at 5:00 p.m., New York City time, on August   , 1999, unless extended
  or sooner terminated

 . are not conditioned on any minimum aggregate principal amount of outstanding
  notes being tendered

In addition, you should note that:

 . all outstanding notes that are validly tendered and not validly withdrawn
  will be exchanged for an equal principal amount of new notes that are
  registered under the Securities Act of 1933

 . tenders of outstanding notes may be withdrawn any time before the expiration
  of the exchange offers

 . the exchange of outstanding notes for new notes in the exchange offers will
  not be a taxable event for U.S. federal income tax purposes

   You should consider carefully the risk factors beginning on page 14 of this
prospectus before participating in the exchange offers.

   Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of the new notes or determined if this
prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.

            The date of this prospectus is                     , 1999.

<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                          Page
                                                                          ----
<S>                                                                       <C>
Prospectus Summary.......................................................   1
Risk Factors.............................................................  14
Cautionary Statements....................................................  29
Forward-Looking Information..............................................  29
The Exchange Offers......................................................  29
Use of Proceeds..........................................................  40
Capitalization...........................................................  41
Unaudited Pro Forma Financial Statements.................................  42
Selected Historical Financial Data.......................................  49
Management's Discussion and Analysis of Financial Condition and Results
 of Operations...........................................................  52
Business.................................................................  62
Description of Other Indebtedness........................................  70
Description of New Notes.................................................  73
United States Federal Income Tax Considerations.......................... 121
Registration Rights Agreement............................................ 121
Book-entry; Delivery and Form............................................ 124
Plan of Distribution..................................................... 126
Legal Matters............................................................ 127
Experts.................................................................. 127
Where You Can Find More Information...................................... 128
Incorporation by Reference............................................... 128
</TABLE>
<PAGE>

                               Prospectus Summary

   This summary highlights information from this prospectus. It is not complete
and may not contain all of the information that is important to you. This
prospectus includes specific terms of the exchange offers, information about
our business and detailed financial data. We encourage you to read the detailed
information and financial statements and related notes appearing elsewhere in
this prospectus in their entirety. Pro forma disclosures assume that Lyondell
Chemical Worldwide, Inc., formerly ARCO Chemical Company, was acquired on
January 1, 1998.

                         Summary of the Exchange Offers

   On May 17, 1999, we completed the private offering of the outstanding notes.
In connection with the private offering, we entered into a registration rights
agreement with the initial purchasers in the private offering. In this
agreement, we agreed to deliver this prospectus to you and to use our best
efforts to complete the exchange offers within 210 days after the date we
issued the outstanding notes. You are entitled to exchange your outstanding
notes for new notes that are registered with the SEC and are freely tradeable.
You should read the discussion under the headings "--Summary of Terms of the
New Notes" beginning on page 10 and "Description of New Notes" beginning on
page 73 for further information regarding the new notes.

   We summarize the terms of the exchange offers below. You should read the
discussion under the heading "The Exchange Offers" beginning on page 29 for
further information regarding the exchange offers and resale of the new notes.

The Exchange Offers.........  We are offering to issue to you in separate
                              exchange offers:

                              . registered 9 5/8% Senior Secured Notes, Series
                                A, due 2007 in exchange for your outstanding
                                unregistered 9 5/8% Senior Secured Notes,
                                Series A, due 2007;

                              . registered 9 7/8% Senior Secured Notes, Series
                                B, due 2007 in exchange for your outstanding
                                unregistered 9 7/8% Senior Secured Notes,
                                Series B, due 2007; and

                              . registered 10 7/8% Senior Subordinated Notes
                                due 2009 in exchange for your outstanding
                                unregistered 10 7/8% Senior Subordinated Notes
                                due 2009

                              in exchange for a like kind and principal amount
                              of outstanding notes properly tendered to us by
                              you.

Expiration Date.............
                              Unless sooner terminated, the exchange offers
                              expire at 5:00 p.m., New York City time, on
                              August   , 1999, or at a later date and time to
                              which we extend them. We may choose to extend one
                              or more of the exchange offers without extending
                              the others.

Withdrawal of Tenders.......  You may withdraw the tender of your outstanding
                              notes at any time before the expiration date of
                              the applicable exchange offer.

Conditions to the Exchange    We will not be required to accept outstanding
 Offers.....................  notes for exchange if the exchange offers would
                              violate applicable law or if any legal action has
                              been instituted or threatened that would impair
                              our ability to proceed with the exchange offers.
                              We will not be required to exchange the
                              outstanding notes of any holder that does not
                              make specific representations to us. The exchange
                              offers are not conditioned on each other or on
                              any minimum aggregate principal amount of
                              outstanding notes being tendered.

                                       1
<PAGE>


Procedures for Tendering
 Outstanding Notes..........  If you wish to participate in an exchange offer,
                              you must complete, sign and date the applicable
                              letter of transmittal and fax, mail or deliver
                              the applicable letter of transmittal, together
                              with the outstanding notes, to the exchange
                              agent. If your outstanding notes are held through
                              The Depository Trust Company (DTC), you may
                              deliver your outstanding notes by book-entry
                              transfer.

                              In the alternative, if your outstanding notes are
                              held through the DTC and you wish to participate
                              in an exchange offer, you may do so instead
                              through the automated tender offer program of the
                              DTC. If you tender under this program, you will
                              agree to be bound by the applicable letter of
                              transmittal that we are providing with this
                              prospectus as though you had actually signed the
                              applicable letter of transmittal.

                              By signing or agreeing to be bound by the
                              applicable letter of transmittal, you will
                              represent to us, among other things, that:

                              . any new notes you receive will be acquired in
                                the ordinary course of your business;

                              . you have no arrangement or understanding with
                                any person to participate in the distribution
                                of the outstanding notes or the new notes
                                within the meaning of the Securities Act;

                              . if you are not a broker-dealer or are a broker-
                                dealer but will not receive new notes for your
                                own account in exchange for outstanding notes,
                                you are not engaged in and do not intend to
                                participate in the distribution of the new
                                notes;

                              . if you are a broker-dealer that will receive
                                new notes for your own account in exchange for
                                outstanding notes, you represent that the
                                outstanding notes to be exchanged for new notes
                                were acquired by you as a result of market-
                                making activities or other trading activities,
                                and you acknowledge that you will deliver a
                                prospectus meeting the requirements of the
                                Securities Act in connection with any resale of
                                the new notes. It is understood that by
                                acknowledging that you will deliver, and by
                                delivering, a prospectus in connection with any
                                resale of the new notes, you are not admitting
                                that you are an "underwriter" within the
                                meaning of the Securities Act; and

                              . you are not an "affiliate," as defined in Rule
                                405 of the Securities Act, of Lyondell or a
                                broker-dealer tendering outstanding notes
                                acquired directly from Lyondell for its own
                                account.

Special Procedures for
 Beneficial Owners..........  If you beneficially own outstanding notes
                              registered in the name of a broker, dealer,
                              commercial bank, trust company or other nominee
                              and you wish to tender your outstanding notes in
                              an exchange offer, you should promptly contact
                              the registered holder and instruct it to tender
                              the outstanding notes on your behalf.

                                       2
<PAGE>


                              If you wish to tender your outstanding notes on
                              your own behalf, you must either arrange to have
                              your outstanding notes registered in your name or
                              obtain a properly completed bond power from the
                              registered holder prior to completing and
                              executing the applicable letter of transmittal
                              and delivering your outstanding notes. The
                              transfer of registered ownership may take
                              considerable time.

Guaranteed Delivery
 Procedures.................  If you wish to tender your outstanding notes and
                              cannot comply with the requirement to deliver the
                              applicable letter of transmittal and your
                              outstanding notes or use the automated tender
                              offer program of the DTC before the expiration
                              date, you must tender your outstanding notes
                              according to the guaranteed delivery procedures
                              described in "The Exchange Offers--Guaranteed
                              Delivery Procedures" beginning on page 37.

U.S. Federal Income Tax
 Considerations.............  The exchange of outstanding notes for new notes
                              in the exchange offers will not be a taxable
                              event for U.S. federal income tax purposes.

Use of Proceeds.............  We will not receive any cash proceeds from the
                              issuance of the new notes.

Plan of Distribution........  All broker dealers who receive new notes in the
                              exchange offers have a prospectus delivery
                              obligation.

                              Broker-dealers who acquired the outstanding notes
                              as a result of market-making or other trading
                              activities may use this exchange offer
                              prospectus, as supplemented or amended, in
                              connection with the resales of the new notes.

                              Broker-dealers who acquired the outstanding notes
                              from Lyondell must comply with the registration
                              and prospectus delivery requirements of the
                              Securities Act, including being named as selling
                              noteholders, in order to resell the outstanding
                              notes or the new notes.

Consequences of Failure to
 Exchange Outstanding
 Notes......................  If you do not tender your outstanding notes, you
                              will continue to hold notes subject to the
                              existing transfer restrictions. Following
                              completion of the exchange offers, the liquidity
                              of the market for your outstanding notes could be
                              adversely affected. In most cases, we will have
                              no obligation to register the outstanding notes
                              once we complete the exchange offers.

                                       3
<PAGE>


                               The Exchange Agent

   We have appointed The Bank of New York as exchange agent for each of the
exchange offers. You should direct questions and requests for assistance,
requests for additional copies of this prospectus or of the applicable letter
of transmittal and requests for the notice of guaranteed delivery to the
exchange agent addressed as follows:

      For Delivery by Mail:           For Overnight Delivery Only or by Hand:


       The Bank of New York                     The Bank of New York
             21 West                                  21 West
    101 Barclay St., Floor 7E                     101 Barclay St.
        New York, NY 10286                Corporate Trust Services Window
        Attn: Reorg. Dept.                          Ground Level
                                                 New York, NY 10286
                                                 Attn: Reorg. Dept.

          By Facsimile Transmission (for eligible institutions only):

                              (212) 815-6339

                            Attn: Enrique Lopez

                              To Confirm Receipt:
                                 (212) 815-2742

                                 About Lyondell

   Lyondell Chemical Company is a global chemical company with leading market
positions in all of its major products, world-scale production capacity and low
cost operations. Lyondell has advantages in the supply of raw materials through
its equity ownerships in its three joint ventures Equistar Chemicals, LP,
LYONDELL-CITGO Refining LP and Lyondell Methanol Company, L.P. Ownership in
these joint ventures enhances Lyondell's operating leverage and, together with
Lyondell's core business of less cyclical chemical products, mitigates the
impact of petrochemical and refining cycles affecting its joint ventures.

   Lyondell's operations are comprised of four businesses: intermediate
chemicals and derivatives, petrochemicals and polymers, refining and methanol.

Intermediate Chemicals and Derivatives (Lyondell Worldwide)

   Lyondell is the world's largest producer of propylene oxide (PO) and a
leading worldwide producer and marketer of PO derivatives, including polyether
polyols, propylene glycol, propylene glycol ethers and butanediol. PO is a key
component in the manufacture of urethanes and nonurethane products. Lyondell is
the world's second largest supplier of toluene diisocyanate (TDI), another key
component of urethanes. End uses for Lyondell's PO and its derivatives include:

  . flexible foam for automotive seating and furniture;

  . antifreeze and coolants;

  . personal care products;

                                       4
<PAGE>


  . coatings, adhesives, sealants and elastomers;

  . resins; and

  . solvents.

   Lyondell is also a major producer of styrene monomer and tertiary butyl
alcohol (TBA), co-products of its proprietary PO technology. Styrene monomer is
used to produce plastics and resins including polystyrene, used in household
goods such as disposable food service items and toys, and expandable
polystyrene, used in foam cups and containers, insulation and packaging.
Lyondell currently utilizes most of its TBA to make methyl tertiary butyl ether
(MTBE), a gasoline blending component used to reduce fuel emissions and enhance
octane. The intermediate chemicals and derivatives business is the only
business conducted through wholly owned Lyondell operations.

Petrochemicals and Polymers (Equistar)

   Lyondell owns 41% of Equistar, which is an integrated, low-cost producer of
petrochemicals and polymers. Equistar is North America's largest producer of
ethylene, propylene and polyethylene and third largest producer of ethylene
oxide. End uses for its products consist of a wide range of consumer and
industrial products including:

  . packaging film;

  . trash bags;

  . plastic bottles;

  . plastic caps and other closures;

  . rigid packaging; and

  . carpet facing and backing.

   Equistar was formed in December 1997 by combining the ethylene, propylene,
aromatics and polymers businesses of Lyondell and Millennium Chemicals Inc.
Equistar was expanded in May 1998 with the addition of the olefins, ethylene
oxide and derivatives businesses of Occidental Chemical Corporation. Dan Smith,
the chief executive officer of Lyondell, also serves as the chief executive
officer of Equistar.

Refining

   Lyondell owns 58.75% of LYONDELL-CITGO Refining, which owns and operates
North America's largest extra heavy crude oil refinery, processing low cost
17(degrees) API crude oil. LYONDELL-CITGO Refining processes large volumes of
this extra heavy crude oil into premium petroleum products including:

  . gasoline;

  . low sulfur diesel;

  . jet fuel;

  . aromatics;

  . lube oils; and

  . other refined products.

                                       5
<PAGE>


   LYONDELL-CITGO Refining has a long-term crude oil supply agreement with
Petroleos de Venezuela, S.A. (PDVSA), the national oil company of Venezuela.
This agreement helps to stabilize earnings and cash flow through an
advantageous pricing formula. LYONDELL-CITGO Refining was formed in 1993 as a
joint venture with CITGO Petroleum Corporation, an indirect wholly owned
subsidiary of PDVSA.

Methanol (Lyondell Methanol)

   Lyondell owns 75% of Lyondell Methanol, the third largest producer of
methanol in the United States. Lyondell Methanol was formed in December 1996 by
Lyondell and MCN Investment Corporation, a producer of natural gas, the primary
raw material for methanol.

Refinancing of Credit Facility

   In May 1999, Lyondell completed a partial refinancing of the debt under its
credit facility. The refinancing reduced consolidated debt by approximately
$630 million and eliminated substantially all debt maturities through year end
2000 by refinancing with longer-term debt. The refinancing consisted of:

  . the issuance of the outstanding notes for gross proceeds of $2.4 billion;

  . the borrowing of an additional $1 billion under two new term loans under
    the credit facility; and

  . the issuance of 40.25 million shares of Lyondell common stock for gross
    proceeds of $765 million.

                                       6
<PAGE>

   The following chart shows the organization of Lyondell.







                              [Chart appears here]

                                       7
<PAGE>


                              Lyondell's Strategy

   Lyondell's mission is to maximize total return to its stockholders and
increase cash flow through growth, improved profitability and reduced earnings
volatility.

   Lyondell has been a leader in the ongoing restructuring of the chemical
industry, taking a series of steps to reposition its business portfolio over
the past several years. The following is a list of major actions Lyondell has
taken to fulfill this strategy:

<TABLE>
   <C>  <C> <S>
   1993  -- Formation of LYONDELL-CITGO Refining
   1995  -- Acquisition of Alathon(TM) high density polyethylene business
   1996  -- Formation of Lyondell Methanol
   1997  -- Completion of $1.1 billion LYONDELL-CITGO Refining upgrade project
   1997  -- Creation of Equistar
   1998  -- Expansion of Equistar with the addition of the Occidental assets
   1998  -- Acquisition of ARCO Chemical Company
</TABLE>

   Lyondell will continue to identify and evaluate opportunities for strategic
business combinations, including partnership arrangements such as Equistar and
LYONDELL-CITGO Refining, as a means to provide profitable growth and further
enhance Lyondell's competitive positions. Lyondell actively seeks opportunities
to maximize efficiency or value through various transactions, including the
purchase or sale of assets, contractual arrangements or joint ventures. To the
extent permitted under the terms of Lyondell's credit facility and other debt
agreements, some of these transactions may be financed by additional borrowings
or by the issuance of Lyondell common stock.

Building on Leading Market Positions and Technologies to Achieve Profitable
Growth

   Lyondell intends to build on its leading market positions and technologies
to achieve consistent profitable growth. Today, Lyondell and Equistar hold
leading market positions in the majority of their primary products, as shown
below.

<TABLE>
<CAPTION>
                                                  North American
                                                      Market         Global
Product                                              Position    Market Position
- -------                                           -------------- ---------------
<S>                                               <C>            <C>
Lyondell:
  PO.............................................        1               1
  Urethanes:
    Polyols......................................        2               2
    TDI..........................................        2               2

Equistar:
  Ethylene.......................................        1               2
  Propylene......................................        1               3
  Polyethylene...................................        1               4
</TABLE>

   Lyondell intends to increase sales by creating new markets for its products
through focused technological innovation and the development of higher value
products that create additional uses for Lyondell's primary products. To
achieve this goal, Lyondell is undertaking the following initiatives:

  . participating in anticipated global demand growth in urethanes and
    performance chemicals by using Lyondell's strengths in technology,
    manufacturing, marketing and access to raw materials;

  . taking advantage of additional opportunities derived from Equistar's
    North American market leadership and low cost position in ethylene,
    propylene and polyethylene;

                                       8
<PAGE>


  . strategically expanding Equistar's polymers technology and capacity by
    focusing on higher value products with large market demand potential,
    such as medium and high molecular weight high density polyethylene; and

  . continuing to exploit LYONDELL-CITGO Refining's $1.1 billion refinery
    upgrade by increasing the total processing volume of extra heavy, low
    cost crude oil and producing a higher percentage of higher value
    products. See "Management's Discussion and Analysis of Financial
    Condition and Results of Operations--Results of Operations--First Quarter
    1999 Compared to Fourth Quarter 1998--Refining."

Improving Profitability and Reducing Earnings Volatility

   Lyondell's current business portfolio is strategically positioned to provide
opportunities to improve profitability and reduce earnings cyclicality. In
addition, Lyondell intends to continue its ongoing cost reduction initiatives
to maximize efficiency of its operations.

   Lyondell continues to integrate its businesses:

  . by capitalizing on its advantages in the supply of raw materials between
    Lyondell and Equistar and Equistar and LYONDELL-CITGO Refining in order
    to capture profit margins across a wide range of products and to improve
    stability of production volumes and earnings throughout Lyondell; and

  . through increasing Equistar product sales and improving its marketing
    efforts using the global expertise and market presence of Lyondell.

   Lyondell continues its efforts to reduce costs:

  . by completing the cost reduction programs in place at Lyondell, Equistar
    and LYONDELL-CITGO Refining;

  . through realizing identified cost savings and revenue enhancements across
    Lyondell's business portfolio by optimizing manufacturing operations,
    using more efficient purchase and distribution practices and reducing
    overhead and staffing; and

  . by maximizing value from the strategic flexibility and optimization
    potential inherent in Equistar's large number of plant sites, raw
    material flexibility and broad polymers product slate.

Debt Reduction and Refinancing Initiatives

   Lyondell significantly increased its borrowed funds in 1998 to acquire
Lyondell Worldwide. The decision to take advantage of this acquisition
opportunity did not alter management's view of an optimal long-term capital
structure which calls for a lower debt-to-equity ratio and an investment grade
debt rating. Lyondell is looking to the cash flow of its businesses, potential
joint ventures involving strategic assets, new equity capital, working capital
initiatives, potential asset sales, refinancing plans and other cash generating
opportunities to achieve this goal.

   Management believes that Lyondell is well positioned through its leading
market positions, world-scale production capacity and low cost operations to
continue to satisfy its ongoing cash requirements through its share of cash
distributions from both Equistar and LYONDELL-CITGO Refining and cash flow from
its intermediate chemicals and derivatives business. This positioning should
also generate significant additional cash flow when prices for some of
Lyondell's cyclical products emerge from their current troughs.

                                       9
<PAGE>

                       Summary of Terms of the New Notes

   Unlike the outstanding notes, the new notes will be registered under the
Securities Act and freely tradeable and will not have registration rights.
Otherwise, the new notes are substantially identical to the outstanding notes.
The new notes will evidence the same debt as the outstanding notes, and the
outstanding notes and the new notes will be governed by the same indentures.

Securities Offered..........  $900 million principal amount of registered
                              9 5/8% Senior Secured Notes, Series A, due 2007.

                              $1.0 billion principal amount of registered
                              9 7/8% Senior Secured Notes, Series B, due 2007.

                              $500 million principal amount of registered
                              10 7/8% Senior Subordinated Notes due 2009.

Maturity Dates..............  The Series A Senior Secured Notes and the Series
                              B Senior Secured Notes mature on May 1, 2007.

                              The Senior Subordinated Notes mature on May 1,
                              2009.

Interest Payment Dates......  Interest payments for the new notes will be made
                              semi-annually on each May 1 and November 1,
                              beginning November 1, 1999.

Optional Redemption.........  We may redeem any of the Series A Senior Secured
                              Notes at any time at a redemption price equal to
                              a "make-whole" price, which we describe in more
                              detail beginning on page 80.

                              We may redeem any of the Series B Senior Secured
                              Notes at any time on or after May 1, 2004 at the
                              redemption prices described on page 81.

                              We may redeem any of the Senior Subordinated
                              Notes at any time on or after May 1, 2004 at the
                              redemption prices described on page 82.

                              On or before May 1, 2002, we may redeem up to 35%
                              of the Senior Subordinated Notes with the
                              proceeds of common stock offerings at a
                              redemption price equal to 110.875% of the
                              principal amount of the notes redeemed.

Change of Control...........  Upon the occurrence of the change of control
                              events described beginning on page 82, you may
                              require us to repurchase some or all of your new
                              notes at 101% of their principal amount, plus
                              accrued interest. The occurrence of those change
                              of control events may, however, be an event of
                              default under our credit facility. We cannot
                              assure you that we will have sufficient resources
                              to repurchase your new notes in these
                              circumstances.

Subsidiary Guarantees.......  The new notes will be unconditionally guaranteed
                              by our subsidiaries Lyondell Worldwide and
                              Lyondell Nederland. The guarantees of the Senior
                              Secured Notes will be general obligations of each
                              guarantor and will rank equally with all existing
                              and future

                                       10
<PAGE>

                              unsubordinated debt of each guarantor. The
                              guarantees of the Senior Subordinated Notes will
                              be general obligations of each guarantor and will
                              rank junior to all existing and future
                              unsubordinated debt of each guarantor, including
                              the guarantees of the Senior Secured Notes.

Security....................  The Senior Secured Notes will be secured by a
                              lien equally and ratably with all debt
                              outstanding under our credit facility and, with
                              respect to some of our manufacturing plants, some
                              Lyondell Worldwide bonds as well. The liens will
                              constitute first-priority liens, subject to
                              exceptions and permitted liens, on the following:

                              . Lyondell's and Lyondell Worldwide's personal
                                property;

                              . substantially all the stock of the domestic
                                subsidiaries directly owned by Lyondell and
                                Lyondell Worldwide;

                              . 65% of the stock of foreign subsidiaries
                                directly owned by Lyondell and Lyondell
                                Worldwide;

                              . the rights of some of Lyondell's subsidiaries
                                to receive distributions from Lyondell's
                                existing joint ventures in which they own
                                equity interests; and

                              . mortgages on Lyondell Worldwide's facilities
                                located in Bayport, Texas, Channelview, Texas
                                and Lake Charles, Louisiana.

                              The Senior Secured Notes could become unsecured.
                              Any lien for the benefit of the holders of the
                              Senior Secured Notes will be automatically
                              released, without the consent of the holders,
                              upon a release of that lien under the terms of
                              the security documents or if the release is
                              approved by the requisite lenders under our
                              credit facility. In addition, the collateral
                              agent and Lyondell may amend the provisions of
                              the security documents with the consent of the
                              requisite lenders and without the consent of the
                              holders of the Senior Secured Notes. The lenders
                              under the existing credit facility will have the
                              sole ability to control remedies with respect to
                              the collateral, including any sale or liquidation
                              after acceleration of the new notes or the debt
                              under the credit facility.

Ranking.....................  The Senior Secured Notes will rank equally with
                              all our existing and future unsecured senior debt
                              and before all such debt to the extent of the
                              value of the collateral available to the holders
                              of the Senior Secured Notes. This collateral is
                              shared by the holders of the new notes on a
                              ratable basis with the holders of Lyondell's
                              other senior secured debt, including the debt
                              under the credit facility and some debt of
                              Lyondell Worldwide.

                              The Senior Subordinated Notes will rank junior to
                              all our existing and future unsubordinated debt,
                              including the Senior Secured Notes, the debt
                              under our credit facility and some debt of
                              Lyondell Worldwide.

                              The new notes will also effectively rank junior
                              to all liabilities of our subsidiaries that have
                              not guaranteed the new notes and all liabilities
                              of our joint ventures.

                                       11
<PAGE>


                              The new notes will rank equal in right of payment
                              with any outstanding notes that are not
                              exchanged.

                              At May 31, 1999:

                              . Lyondell and the guarantors had outstanding
                                approximately $5.8 billion of unsubordinated
                                debt that was secured, including the Senior
                                Secured Notes; and

                              . Lyondell's joint ventures, which have not
                                guaranteed the new notes, had approximately
                                $4.0 billion of outstanding liabilities,
                                including trade payables, that are effectively
                                senior to the new notes.

Restrictive Covenants.......  The new notes will be issued under the same
                              indentures as the outstanding notes. The
                              indentures contain restrictive covenants for your
                              benefit that restrict our ability, and the
                              ability of our subsidiaries, to:

                              . incur additional debt or issue subsidiary
                                preferred stock;

                              . increase dividends on our capital stock;

                              . redeem or repurchase capital stock or
                                repurchase subordinated debt;

                              . engage in transactions with affiliates, except
                                on an arms-length basis;

                              . create liens or engage in sale and leaseback
                                transactions;

                              . make some types of investments and sell assets;
                                and

                              . consolidate or merge with, or sell
                                substantially all our assets to, another
                                person.

                              Some of these covenants will no longer apply if
                              the new notes are rated "BBB-" by Standard &
                              Poor's or "Baa3" by Moody's, even if the new
                              notes are subsequently downgraded to a lower
                              rating.

Form of New Notes...........  The new notes will be represented by one or more
                              permanent global securities deposited with the
                              DTC. You will not receive certificates for your
                              new notes unless one of the events described
                              under the heading "Book-Entry; Delivery and
                              Form--Certificated Notes" on page 124 occurs.
                              Instead, beneficial ownership interests in the
                              new notes will be shown on the book-entry records
                              maintained by the DTC. Transfers of beneficial
                              ownership of the new notes will be effected only
                              through the book-entry records maintained by the
                              DTC.

Liquidated Damages..........  If we fail to complete the exchange offers as
                              required by the registration rights agreement, we
                              will be obligated to pay liquidated damages to
                              holders of the outstanding notes as described on
                              page 123.

Use of Proceeds.............  We will not receive any cash proceeds from the
                              issuance of the new notes.

                                       12
<PAGE>


                                  Risk Factors

   Please read and carefully consider the "Risk Factors" beginning on page 14
before participating in the exchange offers.

                          Principal Executive Offices

   The principal executive offices for Lyondell, Lyondell Worldwide and
Lyondell Nederland are located at 1221 McKinney Street, Suite 700, Houston,
Texas 77010, and our telephone number is (713) 652-7200.

           Selected Historical Financial Data and Unaudited Pro Forma
                              Financial Statements

   Please read "Selected Historical Financial Data" beginning on page 49 for
the selected financial data for Lyondell for the years ended December 31, 1994,
1995, 1996, 1997 and 1998, for Lyondell Worldwide for the years ended December
31, 1994, 1995, 1996 and 1997 and for Lyondell for the three-month periods
ended March 31, 1998 and 1999. Please read "Unaudited Pro Forma Financial
Statements" beginning on page 42 for our unaudited pro forma financial data for
the year ended December 31, 1998 and the three-month periods ended March 31,
1998 and 1999.

                                       13
<PAGE>

                                  Risk Factors

   You should carefully consider the following risks before participating in
the exchange offers.

Risk Factors Relating to the New Notes and the Exchange Offers

If you fail to exchange your outstanding notes, the existing transfer
restrictions will remain in effect; the market value of your outstanding notes
may be adversely affected because of a smaller float and reduced liquidity.

   If you do not exchange your outstanding notes for new notes under the
exchange offers, the existing transfer restrictions on the outstanding notes
will continue to apply. In general, the outstanding notes may not be offered or
sold unless they are registered or exempt from registration under the
Securities Act and applicable state securities laws. Except as required by the
registration rights agreement, we do not intend to register resales of the
outstanding notes.

   The tender of outstanding notes under the exchange offers will reduce the
aggregate principal amount of the outstanding notes traded or held in the
marketplace. This may have an adverse effect upon, and increase the volatility
of, the market price of any outstanding notes that you continue to hold due to
a reduction in liquidity.

There is no public market for the new notes, and we do not intend to list them
on any securities exchange or automated quotation system; an active trading
market for the new notes may not develop.

   There is no existing public market for the new notes. We cannot provide any
assurance regarding:

  . the liquidity of any markets that may develop for the new notes;

  . your ability to sell your new notes; or

  . the prices at which you will be able to sell your new notes.

   Future trading prices of the new notes will depend on many factors,
including:

  . prevailing interest rates;

  . our operating results;

  . ratings of the new notes; and

  . the market for similar securities.

   The initial purchasers of the outstanding notes have advised us that they
presently intend to make a market in the new notes after completion of the
exchange offers. However, the initial purchasers do not have any obligation to
do so, and they may discontinue any market-making activities at any time
without any notice.

   We do not intend to apply for listing of the new notes on any securities
exchange or for quotation of the new notes on any automated dealer quotation
system.

Risk Factors Relating to Lyondell's Debt

Our balance sheet is highly leveraged; in order to fulfill our debt repayment
obligations, we may need to refinance our debt, delay acquisitions or capital
expenditures, or take other action to raise cash or reduce expenses.

   At May 31, 1999, Lyondell had $6.3 billion of consolidated debt, which
amounted to approximately 82 percent of its total capitalization. Lyondell's
consolidated debt amounts do not include $3.1 billion in joint venture debt,
$713 million of which is Equistar debt for which Lyondell remains contingently
liable.

                                       14
<PAGE>

   Lyondell's ability to pay or to refinance its debt will depend on future
operating performance, which will be affected by general economic, financial,
competitive, legislative, regulatory, business and other factors. Many of these
factors are beyond Lyondell's control. Lyondell anticipates that its operating
cash flow, together with money Lyondell can borrow under its credit facility,
will be sufficient to meet anticipated future operating expenses and capital
expenditures. However, if future operating cash flows are less than currently
anticipated, Lyondell may be forced to:

  . reduce or delay capital acquisitions or capital expenditures;

  . sell assets; or

  . reduce operating expenses.

   Approximately $240 million of Lyondell's remaining outstanding debt will be
required to be repaid by December 31, 2000. Lyondell expects that most of this
debt will be repaid using cash from operations. The remaining debt is expected
to be repaid from proceeds of capital markets issuances, asset sales and/or
joint venture transactions. In addition, Lyondell's amended credit facility
requires Lyondell to issue up to approximately $470 million of additional
subordinated notes (or more junior securities) by June 2002, unless specified
financial tests are satisfied. This $470 million requirement will be reduced by
$2 for every $1 of common stock issued in the future and will be eliminated if
Lyondell achieves either:

  . a total debt to adjusted EBITDA ratio, as defined in the credit facility,
    of 3.0 to 1.0; or

  . a rating for its senior secured debt of BB by Standard & Poor's and Ba2
    by Moody's.

Lyondell cannot assure you that it will be able to sell these securities on
satisfactory terms, if at all.

Our debt agreements may restrict our ability to take some actions regardless of
whether these actions may be beneficial to holders of the new notes, our
stockholders or Lyondell.

   Our Indentures

   The indentures governing the new notes contain covenants that limit
Lyondell's ability to engage in some types of transactions. Among other things,
these covenants limit Lyondell's and Lyondell's subsidiaries' ability to:

  . incur additional debt or issue subsidiary preferred stock;

  . increase dividends on its capital stock;

  . redeem or repurchase capital stock or repurchase subordinated debt;

  . engage in transactions with affiliates, except on an arms-length basis;

  . create liens or engage in sale and leaseback transactions;

  . make some types of investments and sell assets; and

  . consolidate or merge with, or sell substantially all its assets to,
    another person.

   Our credit facility

   Lyondell's credit facility also contains restrictive covenants and prohibits
Lyondell from prepaying other debt, including the new notes, until some loans
under the credit facility are repaid in full and Lyondell's senior unsecured
debt is rated investment grade. The credit facility also requires Lyondell to
maintain specified financial ratios and satisfy financial condition tests.
Lyondell's ability to meet those financial ratios and tests can be affected by
events beyond its control, and Lyondell cannot assure you that it will be able
to satisfy those ratios and tests. The credit facility covenants also limit
Lyondell's ability to:

  . increase dividends on its capital stock;

  . make some types of investments; and

  . allow its subsidiaries to incur some types and amounts of debt.

                                       15
<PAGE>

   A breach of any of these provisions could permit the lenders to accelerate
the debt under the credit facility to be immediately due and payable and to
terminate all commitments to extend further credit. If Lyondell were unable to
repay this debt, the lenders could proceed against the collateral granted to
them as security. Lyondell has pledged a substantial portion of its assets as
security for obligations under the credit facility and the Senior Secured
Notes. Lyondell cannot assure you that, if its lenders accelerate the repayment
of borrowings under the credit facility, Lyondell will have sufficient assets
to repay the new notes.

Most of the covenants under the new notes do not apply to our joint ventures;
our joint ventures could increase their debt leverage, default on their debt
obligations or take other action limiting their ability to pay distributions to
Lyondell for which you will have no recourse.

   Lyondell conducts a substantial amount of its operations through its joint
ventures Equistar, LYONDELL-CITGO Refining and Lyondell Methanol. None of these
joint ventures is a "subsidiary" or a "restricted subsidiary" of Lyondell, as
those terms are defined in the indentures. Therefore, the covenants described
above do not apply to the joint ventures in which Lyondell participates.

   As a result, holders of the new notes will have no recourse if Equistar,
LYONDELL-CITGO Refining or Lyondell Methanol substantially increases its debt
leverage. The indentures obligate Lyondell to use its best efforts to ensure
that its joint ventures do not agree to restrictions on their ability to pay
dividends to Lyondell, but that obligation is modified by significant
exceptions. For more information on these exceptions, you should read the
section called "Description of New Notes--Restrictive Covenants--Dividend and
Other Payment Restrictions Affecting Subsidiaries and Joint Ventures."
Equistar, LYONDELL-CITGO Refining and Lyondell Methanol could enter into
agreements that would restrict their ability to pay dividends or make other
distributions to Lyondell despite Lyondell's best efforts to the contrary.
Additionally, under applicable state law, Lyondell's joint ventures may be
limited in amounts that they are permitted to pay as distributions on their
equity interests. Any restriction on dividends from Lyondell's joint ventures
could have a material adverse effect on Lyondell.

   Moreover, a default on debt obligations by a joint venture that is not a
"restricted subsidiary" would not give rise to a default under the indentures
governing the new notes. This is the case even though creditors of the
defaulting joint venture would have remedies against the joint venture. As a
result, holders of the new notes will have no recourse if any of these joint
ventures defaults on any of its debt.

   A default by any of Lyondell's joint ventures under any of its material debt
instruments would give rise to a default under the credit facility. A default
by any joint venture on its debt could also result in a dividend blockage,
which could have a material adverse effect on Lyondell.

The new notes are subordinated to debt of our subsidiaries and joint ventures;
the Senior Subordinated Notes are subordinated to Lyondell's senior debt.

   Subsidiary and joint venture liabilities

   None of Lyondell's joint ventures have guaranteed the new notes. Lyondell's
subsidiaries Lyondell Worldwide and Lyondell Nederland are guarantors of the
new notes and are guarantors under the credit facility. No other subsidiaries
of Lyondell will guarantee the new notes. As a result, the new notes are not
debt of Lyondell's joint ventures or subsidiaries, other than Lyondell
Worldwide and Lyondell Nederland. Holders of the debt and other liabilities of
Lyondell's joint ventures and other subsidiaries will effectively be senior to
claims against those entities by holders of the new notes. At May 31, 1999,
these joint ventures had $4.0 billion of outstanding liabilities, including
trade payables.

                                       16
<PAGE>

   Subordination provisions of the Senior Subordinated Notes

   The Senior Subordinated Notes rank junior to all existing and future senior
debt of Lyondell and the guarantors. At May 31, 1999, Lyondell and the
guarantors had approximately $5.8 billion of senior debt, substantially all of
which was secured.

   As a result of this subordination, if either:

  . Lyondell is insolvent or enters into bankruptcy or a similar proceeding;

  . Lyondell fails to make a payment when due on senior debt; or

  . any senior debt is accelerated;

then the holders of this senior debt must be paid in full before the holders
of the Senior Subordinated Notes may be paid.

   In addition, Lyondell cannot make any cash payments to holders of Senior
Subordinated Notes if it has failed to make payments to holders of designated
senior debt. Under some circumstances, Lyondell cannot make any payments to
holders of Senior Subordinated Notes for a period of up to 179 days if
Lyondell has defaulted on covenants under designated senior debt but there has
been no payment default or acceleration.

   Additional Pari Passu Debt

   If Lyondell incurs any additional debt that ranks equally with the new
notes, the holders of that debt will be entitled to share ratably with the
holders of the new notes in any proceeds distributed in connection with any
insolvency, liquidation, reorganization, dissolution or other winding-up of
Lyondell. This may have the effect of reducing the amount of cash repaid to
holders of the new notes.

Lyondell may not be able to repurchase your new notes upon a change of
control.

   Upon the occurrence of some change of control events described in the
indentures, you may require Lyondell to purchase your new notes at 101% of
their principal amount, plus accrued interest. Lyondell may not have the
financial resources to purchase your new notes, particularly if a change of
control event triggers a similar repurchase requirement for, or results in the
acceleration of, other debt. The credit facility provides that some change of
control events will constitute a default under the credit facility and could
result in the acceleration of the maturity of all debt under the credit
facility. Future debt may also contain similar provisions.

Holders of the Senior Secured Notes may not be able to fully realize the value
of their liens; in such case, holders of the Senior Secured Notes will have an
unsecured claim against Lyondell to the extent that amounts due on the Senior
Secured Notes exceed the proceeds from the sale of the secured assets.

   The security for the benefit of the holders of the Senior Secured Notes can
   be released without their consent.

   The liens for the benefit of the Senior Secured Notes may be released
without any vote or consent by the holders of the Senior Secured Notes under
the following guidelines:

  . the security documents generally provide for an automatic release of all
    liens on any asset that is disposed of in compliance with the provisions
    of the security documents;

  . any lien can be released if approved by the requisite number of lenders
    under our credit facility;

  . the collateral agent and Lyondell may amend the provisions of the
    security documents with the consent of the requisite number of lenders
    under our credit facility and without the consent of the holders of any
    of the Senior Secured Notes; and

  . the lenders under our credit facility will have the sole ability to
    control remedies with respect to the collateral, including the sale or
    liquidation of the collateral after acceleration of the new notes or the
    debt under the credit facility.

                                      17
<PAGE>

As a result, Lyondell cannot assure you that the Senior Secured Notes will
continue to be secured by a substantial portion of Lyondell's assets. Holders
of the Senior Secured Notes will have no recourse if the lenders under
Lyondell's credit facility approve the release of any or all the collateral.
This is the case even if that release adversely affects any rating of the
Senior Secured Notes.

   The collateral may not be valuable enough to satisfy all the obligations
secured by the collateral.

   Lyondell will secure its obligations under the Senior Secured Notes by the
pledge of some of its and Lyondell Worldwide's assets. This pledge is also for
the benefit of the lenders under the credit facility and the holders of
Lyondell Worldwide's outstanding debentures.

   The security documents and the indentures allow Lyondell to apply the
proceeds of any sale of assets, including the collateral and excluding sales
after acceleration of the credit facility, to repay debt under the credit
facility and Lyondell Chemical Worldwide's 9.9% Debentures due 2000 before
repaying amounts owed under the Senior Secured Notes.

   The value of the pledged assets in the event of a liquidation will depend
upon numerous factors, including market and economic conditions and the
availability of buyers. No independent appraisals of the pledged property have
been prepared in connection with the sale of the outstanding notes or the
exchange offers. Accordingly, Lyondell cannot assure you that the proceeds of
any sale of the pledged assets following an acceleration of the Senior Secured
Notes to maturity would be sufficient to satisfy, or would not be
substantially less than, amounts due on the Senior Secured Notes and the other
debt secured thereby. If the proceeds of any sale of the pledged assets were
not sufficient to repay all amounts due on any Senior Secured Notes, the
holders of Senior Secured Notes would have only an unsecured claim against the
remaining assets of Lyondell for the remainder of the amounts due.

   By their nature, some or all of the pledged assets will be illiquid and may
have no readily ascertainable market value. Likewise, Lyondell cannot assure
holders of Senior Secured Notes that the pledged assets will be saleable. If
the pledged assets are saleable, there may be substantial delays in connection
with a liquidation. To the extent that liens, rights and easements granted to
third parties encumber assets located on property owned by Lyondell or
constitute subordinate liens on the pledged assets, third parties may exercise
rights and remedies with respect to the property subject to these
encumbrances, including rights to require marshaling of assets. These rights
of third parties could adversely affect the value of the subject pledged
assets and the ability of the collateral agent to realize or foreclose on the
subject pledged assets.

   Bankruptcy laws may limit your ability to realize value from the
collateral.

   If Lyondell defaults under the indentures for the Senior Secured Notes, the
collateral agent's right to repossess and dispose of the pledged assets is
likely to be significantly impaired if a bankruptcy case is commenced by or
against Lyondell before the collateral agent repossesses and disposes of the
pledged assets. Under the bankruptcy code, a secured creditor is prohibited
from repossessing its security from a debtor in a bankruptcy case, or from
disposing of security repossessed from that debtor, without approval of the
bankruptcy court. Moreover, the bankruptcy code permits the debtor in default
to continue to retain and use the collateral so long as the secured creditor
receives "adequate protection" by court order.

   The meaning of the term "adequate protection" may vary according to
circumstances. In general, it is intended to protect the value of a secured
creditor's interest in the collateral and may include cash payments or the
granting of additional security for any decrease in the value of the
collateral as a result of the stay of repossession or the disposition or use
of the collateral by the debtor during the bankruptcy case. Generally,
adequate protection payments are not required to be paid by a debtor to a
secured creditor unless the bankruptcy court determines that the value of the
secured creditor's interest in the collateral is declining during

                                      18
<PAGE>

the course of the bankruptcy case. Due to the lack of a precise definition for
the term "adequate protection" and the broad discretionary powers of a
bankruptcy court, it is impossible to predict:

  . how long payments under the Senior Secured Notes could be delayed
    following the beginning of the bankruptcy case;

  . whether or when the collateral agent could repossess or dispose of the
    pledged assets; or

  . whether or to what extent holders of the Senior Secured Notes would be
    compensated for any delay in payment or loss of value of the pledged
    assets through the requirement of "adequate protection."

   The collateral is subject to casualty risks and no mortgage title insurance
has been obtained.

   Lyondell is obligated under the security documents at all times to properly
insure the pledged assets against loss or damage by fire or other hazards to
the extent that these assets are usually insured by corporations operating
assets of a similar nature in the same or similar localities. There are,
however, some types of losses which may be either uninsurable or not
economically insurable. Further, the insurance proceeds may not compensate
Lyondell fully for its losses. In the event there is a total or partial loss of
any of the pledged assets, the proceeds received by Lyondell may not be
sufficient to satisfy all the secured obligations, including the Senior Secured
Notes.

   In the event of a total or partial loss to any of the mortgaged facilities,
some items of equipment may not be easily replaced because they are
sufficiently large or customized that replacement units generally are not
readily available. Accordingly, notwithstanding any insurance coverage, the
large size of some of Lyondell's equipment and the extended period needed to
manufacture replacement units could cause significant delays in replacement.

   Additionally, Lyondell is not required under the security documents to
purchase any title insurance insuring the collateral agent's lien on the
mortgaged properties. If a loss occurs from any mortgaged property because of a
title defect, Lyondell might not be able to replace the property with
collateral of equal value.

Fraudulent transfer statutes may limit your rights as a note holder; a court
could invalidate our obligations under the new notes or the liens or
subordinate your rights as a note holder to the rights of other creditors.

   The incurrence by Lyondell of debt, including the new notes, to refinance
the debt incurred under the credit facility to acquire Lyondell Worldwide could
be reviewed under relevant federal and state fraudulent transfer laws in a
bankruptcy case or a lawsuit by or on behalf of unpaid creditors of Lyondell.
The collateral for the Senior Secured Notes includes mortgages on a substantial
portion of the domestic operating assets of Lyondell Worldwide. These assets
are not burdened by any liens and are available for claims of Lyondell
Worldwide's creditors before the claims of Lyondell's creditors. Creditors of
Lyondell Worldwide might claim that the granting of the liens on these assets
is a fraudulent transfer under federal or state laws.

   Federal or state fraudulent transfer laws permit a court to do all of the
following:

  . avoid all or a portion of Lyondell's obligations to holders of the new
    notes;

  . subordinate Lyondell's obligations to holders of the new notes to
    Lyondell's other existing and future debt, thereby entitling other
    creditors to be paid in full before any payment is made on the new notes;
    or

  . take other action detrimental to holders of the new notes, including, in
    some circumstances, invalidating the new notes or the liens securing the
    Senior Secured Notes.

                                       19
<PAGE>

If a court were to take any of these actions, holders of the new notes might
not ever be repaid.

   Under federal and state fraudulent transfer laws, to take any of those
actions, courts will typically need to find that, at the time the new notes
were issued, Lyondell either:

  . issued the new notes with the intent of hindering, delaying or defrauding
    current or future creditors; or

  . received less than fair consideration or reasonably equivalent value for
    incurring the debt represented by the new notes and:

    (1) was insolvent or was rendered insolvent by reason of the issuance
        of the new notes;

    (2) was engaged, or about to engage, in a business or transaction for
        which Lyondell's assets were unreasonably small; or

    (3) intended to incur, or believed or should have believed it would
        incur, debts beyond its ability to pay as the debts mature.

All of the terms used above are defined in or interpreted under the applicable
fraudulent transfer laws.

   Different jurisdictions define "insolvency" differently. However, Lyondell
generally would be considered insolvent at the time it incurred the debt
constituting the new notes if either:

  . the fair market value, or fair saleable value, of its assets is less than
    the amount required to pay its total existing debts and liabilities,
    including the probable liability on contingent liabilities, as they
    become absolute or matured; or

  . Lyondell was incurring debts beyond its ability to pay as the debts
    mature.

   Lyondell cannot assure holders of the new notes:

  . what standard a court would apply to determine if Lyondell was
    "insolvent" on the date it issued the new notes;

  . that a court would not determine that Lyondell was insolvent on the date
    it issued the new notes under either valuation method described above; or

  . that a court would not determine that the payments constituted fraudulent
    transfers on some other legal ground without regard to Lyondell's
    solvency.

Fraudulent transfer statutes may limit your rights under the guarantees; a
court could invalidate the guarantees or subordinate your rights under the
guarantees to the rights of other creditors.

   Our obligations under the new notes are guaranteed by Lyondell Worldwide and
Lyondell Nederland, two of our subsidiaries. The guarantees may be reviewed
under various laws enacted for the protection of creditors. It is possible that
the creditors of a guarantor may challenge a guarantee as a fraudulent transfer
under relevant federal and state laws, by claiming, for example, that the
obligations of the guarantor were incurred for less than reasonably equivalent
value or fair consideration because the guarantee was incurred for the benefit
of Lyondell and only indirectly, if at all, for the benefit of the guarantor.
Under some circumstances, including a finding that a guarantor was insolvent at
the time its guarantee was issued, a court could hold that the obligations of
the guarantors under the guarantees may be voided or are subordinate to other
obligations of the guarantors. In addition, it is possible that the amount for
which a guarantor is liable under a guarantee may be limited. In that case, the
analysis of insolvency described above would generally apply.

   In an attempt to limit the applicability of fraudulent transfer laws, the
indentures limit the amount of the guarantees of Lyondell Worldwide and
Lyondell Nederland to the amount that will result in each guarantee not
constituting a fraudulent transfer or improper corporate distribution. However,
Lyondell cannot assure you as to what standard a court would apply in making a
determination as to what would be the maximum liability of a guarantor.

                                       20
<PAGE>

Risk Factors Relating to Lyondell's Business

The chemical and refining industries are cyclical and volatile; the chemical
industry has experienced alternating periods of tight supply and overcapacity
which affect our results of operations and the market value of the new notes.

   Lyondell's historical operating results reflect the cyclical and volatile
nature of both the chemical and refining industries. Both industries are mature
and capital intensive. Margins for these industries are sensitive to supply and
demand balances, which have historically been cyclical. The chemical industry
historically has experienced alternating periods of tight supply, causing
prices and profit margins to increase. These periods are typically followed by
periods of substantial capacity addition, resulting in oversupply and declining
prices and profit margins.

   Due to the commodity nature of most of Lyondell's products, Lyondell is not
necessarily able to protect its market position by product differentiation or
to pass on cost increases to its customers. Accordingly, increases in raw
materials and other costs do not necessarily correlate with changes in product
prices, either in the direction of the price change or in absolute magnitude.

   Moreover, a number of Lyondell's competitors in various segments of the
chemical industry have announced plans for expansion of plant capacity.
Lyondell cannot assure holders of the new notes that future growth in product
demand will be sufficient to utilize this additional, or even current,
capacity. Excess industry capacity may lower Lyondell's production rates and
margins and its income and cash flow. As a result, Lyondell's earnings
fluctuate significantly.

   External factors beyond Lyondell's control, including:

  . general economic conditions;

  . competitor action;

  . international events and circumstances; and

  . governmental regulation in the United States and abroad

can cause volatility in raw material prices, demand for Lyondell's products,
product prices and volumes, and margins. These factors can also magnify the
impact of economic cycles on Lyondell's business. A number of Lyondell's
products are highly dependent on durable goods markets that are particularly
cyclical, such as the housing and automotive markets. Any events or factors
that adversely affect Lyondell's results of operations may, in turn, also
adversely affect the market value of the new notes.

The chemical industry is highly competitive, with many of our competitors
having greater financial resources than we have; competition may affect our
results of operations and the market value of the new notes.

   The chemical industry is highly competitive. Many of Lyondell's competitors
are larger and have greater financial resources than Lyondell. Among Lyondell's
chemical competitors are some of the world's largest chemical companies,
including:

  . The Dow Chemical Company;

  . Shell Chemical;

  . BASF AG; and

  . Bayer AG.

In the past several years, there have been a number of mergers, acquisitions
and spin-offs in the chemical industry. This restructuring activity may result
in fewer but more competitive producers with greater financial resources than
Lyondell.

                                       21
<PAGE>

  Competition within the chemical industry is affected by a variety of factors,
including:

  . product price;

  . reliability of product supply;

  . technical support;

  . customer service;

  . product quality; and

  . availability of potential substitute materials.

Changes in the competitive environment could have a material adverse effect on
the business and operations of Lyondell. These changes could include:

  . the emergence of new competitors;

  . the rate of capacity additions by competitors;

  . the intensification of price competition in Lyondell's markets;

  . the introduction of new or substitute products by competitors;

  . technological innovations by competitors; and

  . new environmental laws and regulatory requirements.

We may encounter difficulties in integrating recently acquired and combined
operations which may affect our results of operations and the market value of
the new notes.

   Lyondell acquired Lyondell Worldwide in July 1998. Lyondell combined its
petrochemicals and polymers business with the business contributed by
Millennium Chemicals Inc. to form Equistar in December 1997. Equistar was
expanded by the addition of businesses previously held by Occidental Petroleum
Corporation in May 1998. The processes of integrating the operations of
Lyondell Worldwide with Lyondell and integrating the operations of Equistar are
not complete.

   As is the case with any integration of major businesses that previously
operated independently, the integration processes for Lyondell Worldwide and
for Equistar require the dedication of significant management and operational
resources. The difficulties of combining operations may be magnified by:

  . coordinating geographically separate organizations;

  . integrating personnel with disparate business backgrounds; and

  . combining different transaction processing and financial reporting
    systems and processes and corporate cultures.

   Lyondell's integration process could cause an interruption of or a loss of
momentum in business activities. In addition, Lyondell may suffer a loss of key
employees, customers or supplies, loss of revenues, increases in costs or other
difficulties, some of which may not have been foreseen. Lyondell may not be
able to realize the operating efficiencies, cost savings and other benefits
that are sought from these transactions. Difficulties encountered in the
integration processes could have a material adverse effect on the business and
operations of Lyondell.

Lyondell and Equistar actively pursue acquisitions, dispositions and joint
ventures which may affect our results of operations and the market price of the
new notes.

   Lyondell and Equistar both actively seek opportunities to maximize
efficiency and value through various transactions, including purchases or sales
of assets or contractual arrangements or joint ventures. These transactions
generally are intended to result in the realization of savings, the creation of
efficiencies or the generation of cash to reduce debt. To the extent permitted
under Lyondell's and Equistar's credit facilities and other debt agreements,
these transactions may be financed by additional borrowings by Lyondell or
Equistar or by the issuance of common stock of Lyondell.

                                       22
<PAGE>

   These transactions may also affect the results of operations of Lyondell or
Equistar in the short term due to the costs associated with these transactions.
However, they are expected to yield longer-term benefits if the anticipated
efficiencies and cost savings of the transactions are realized. Factors such as
those described in the immediately preceding risk factor may make it difficult
or impossible to realize these expected efficiencies and cost savings.

Shared control of joint ventures involving Lyondell may delay decisions or
actions which may affect our results of operations and the market price of the
new notes.

   Lyondell conducts a substantial amount of its operations through its joint
ventures. Lyondell shares control of these joint ventures with unaffiliated
third parties. Lyondell's forecasts and plans for its joint ventures assume
that its joint venture partners will observe their obligations with respect to
the joint ventures. If any of Lyondell's joint venture partners do not observe
their commitments, it is possible that the affected joint venture would not be
able to operate according to its business plans or that Lyondell would be
required to increase its level of commitment in order to give effect to the
business plans.

   As with any joint venture arrangement, differences in views among the joint
venture participants may result in delayed decisions or in failures to agree on
major issues. This could potentially adversely affect the business and
operations of the joint venture and, in turn, the business and operations of
Lyondell.

LYONDELL-CITGO Refining's crude oil supply agreement with PDVSA may limit its
earnings and cash flow and decrease distributions to us; decreased
distributions could affect our results of operations and the market price of
the new notes.

   Substantially all of the crude oil used by LYONDELL-CITGO Refining as a raw
material for its refinery is purchased under the crude supply agreement with
PDVSA. The crude supply agreement was entered into in 1993. Lyondell
experienced the full effects of the crude supply agreement beginning in 1997.
The crude supply agreement incorporates formula prices to be paid by LYONDELL-
CITGO Refining for the crude oil supplied. The formula prices are based on the
market value of a slate of refined products deemed to be produced from each
particular crude oil or raw material less:

  . deemed refining costs adjustable for inflation and energy costs;

  . actual costs, including crude oil transportation costs, import duties and
    taxes; and

  . a deemed margin, which varies according to the grade of crude oil or
    other raw material delivered.

   Deemed margins and deemed costs are adjusted periodically based on inflation
rates for specific deemed cost components. Adjustments to the crude supply
agreement margins track, but are less than, inflation rates. Because deemed
operating costs and the slate of refined products deemed to be produced from a
given barrel of crude oil or other raw material do not necessarily reflect the
actual costs and yields in any period, and also because the market value of the
refined products used in the pricing formula does not necessarily reflect the
actual price received for the refined products, the actual refining margin
earned by LYONDELL-CITGO Refining varies depending on, among other things, the
efficiency of LYONDELL-CITGO Refining's operations.

   Although LYONDELL-CITGO Refining believes that the crude supply agreement
reduces the volatility of its earnings and cash flow, the crude supply
agreement also limits LYONDELL-CITGO Refining's ability to enjoy higher margins
during periods when the market price of crude oil is low relative to the then-
current market prices for refined products. In addition, if the actual yields,
costs or volumes of the LYONDELL-CITGO Refining refinery differ substantially
from those contemplated by the crude supply agreement, the benefits of the
crude supply agreement could be substantially diminished. This could result in
lower earnings and cash flow for LYONDELL-CITGO Refining. Furthermore, there
may be periods during which LYONDELL-CITGO Refining's costs for crude oil under
the crude supply agreement may be higher than crude oil available to LYONDELL-
CITGO Refining from other sources.

                                       23
<PAGE>

The risk of enforcing judgments against non-United States affiliates of a
sovereign nation affects LYONDELL-CITGO Refining's crude oil supply agreement
with PDVSA; inability to enforce the crude supply agreement could result in
decreased distributions from LYONDELL-CITGO Refining to Lyondell that could
affect our results of operations and the market price of the new notes.

   There are risks associated with enforcing the provisions of contracts with
companies such as PDVSA that are non-United States affiliates of a sovereign
nation. It is impossible to predict how governmental policies may change under
the current or any subsequent Venezuelan government. In addition, there are
risks associated with enforcing judgments of United States courts against
companies whose assets are located outside of the United States and whose
management does not reside in the United States.

   All of the crude oil supplied by PDVSA is produced in Venezuela, a country
that has experienced economic difficulties and social and political unrest in
recent years. If the crude supply agreement is modified or terminated, or this
source of crude oil is otherwise interrupted due to production difficulties,
OPEC-mandated supply cuts, political or economic events in Venezuela, or other
factors, LYONDELL-CITGO Refining could experience significantly greater
volatility in its earnings and cash flows.

   Each partner has a right to transfer their interest in LYONDELL-CITGO
Refining to unaffiliated third parties in some circumstances, subject to
reciprocal rights of first refusal. If CITGO were to transfer its interest in
LYONDELL-CITGO Refining to an unaffiliated third party, PDVSA would have an
option to terminate the crude supply agreement. Depending on then-current
market conditions, any breach or termination of the crude supply agreement
could adversely affect LYONDELL-CITGO Refining. LYONDELL-CITGO Refining would
have to purchase all of its crude oil in the open market, which could subject
LYONDELL-CITGO Refining to significant price fluctuations. Alternative crude
oil supplies providing similar margins might not be available for purchase by
LYONDELL-CITGO Refining.

The supply of crude oil to LYONDELL-CITGO Refining has been reduced due to
OPEC-mandated supply cuts; this could result in decreased distributions from
LYONDELL-CITGO Refining to Lyondell and affect our results of operations and
the market price of the new notes.

   In late April 1998, LYONDELL-CITGO Refining received notice from PDVSA of
reduced delivery of crude oil related to announced OPEC production cuts. In
August 1998, LYONDELL-CITGO Refining began receiving reduced deliveries from
PDVSA. Following additional cutbacks announced by OPEC in late March 1999,
LYONDELL-CITGO Refining received notice from PDVSA in May 1999 of further
reductions in its delivery of crude oil under the crude supply agreement.

   Historically, Venezuela has complied with OPEC-mandated supply cuts by
reducing its crude production. Decreased allocations of PDVSA crude oil tend to
reduce LYONDELL-CITGO Refining's pretax income and, accordingly, Lyondell's pro
rata share of LYONDELL-CITGO Refining's income. OPEC-mandated supply cuts are a
force majeure event under the crude supply agreement for which Lyondell has no
contractual remedy.

   While to date LYONDELL-CITGO Refining has been able to obtain alternate
supplies of crude oil, the margin for this crude oil has been less than the
margin for the crude oil purchased under the crude supply agreement. PDVSA may
announce further cutbacks in production and thereby reduce LYONDELL-CITGO
Refining's allocation of crude oil. Lyondell cannot predict whether LYONDELL-
CITGO Refining will be able to continue to obtain adequate alternative supplies
of crude oil, or at what cost it will be able to obtain substitute crude oil.

Hazards associated with chemical manufacturing and petroleum refining may occur
and adversely affect our results of operations and the market price of the new
notes.

   Material operating problems, including but not limited to the events
described below, could occur that might have a material adverse effect on the
productivity and profitability of a particular manufacturing facility, or on
Lyondell as a whole, during and after the period of operational difficulties.
Lyondell's revenues are dependent on the continued operation of its various
production facilities, including the ability to complete

                                       24
<PAGE>

construction projects on a schedule. The usual hazards associated with chemical
manufacturing and refining and the related storage and transportation of raw
materials, products and wastes may occur in Lyondell's operations. These
hazards may include:

  . pipeline leaks and ruptures;

  . explosions;

  . fires;

  . inclement weather and natural disasters;

  . mechanical failure;

  . unscheduled downtime;

  . labor difficulties;

  . transportation interruptions;

  . remediation complications;

  . chemical spills;

  . discharges or releases of toxic or hazardous substances or gases;

  . storage tank leaks; and

  . other environmental risks.

   These hazards may cause personal injury and loss of life, severe damage to
or destruction of property and equipment and environmental damage. These
hazards may also result in suspension of operations and the imposition of civil
or criminal penalties. Furthermore, Lyondell is also subject to present and
future claims with respect to workplace exposure, workers' compensation and
other matters. Lyondell maintains property, business interruption and casualty
insurance which it believes complies with customary industry practices.
However, Lyondell is not fully insured against all potential hazards incident
to its business.

Extensive environmental, health and safety laws and regulations impact our
operations and assets; compliance with these regulations could affect our
results of operations and the market price of the new notes.

   Lyondell's operations and ownership and use of real property are subject to
extensive environmental, health and safety laws and regulations. These laws and
regulations are promulgated by domestic and foreign governments at both the
national and local level. Many of these laws and regulations:

  . impose requirements relating to the clean-up of contamination;

  . impose liability in the event of damage to natural resources; and

  . provide for substantial fines and potential criminal sanctions for
    violations.

   The nature of the chemical and refining industries exposes Lyondell to risks
of liability under these laws and regulations due to the production, refining,
storage, transportation and sale of materials that can cause contamination or
personal injury if released into the environment. In addition, individuals
could seek damages

                                       25
<PAGE>

for alleged personal injury or property damage due to exposure to chemicals at
Lyondell's facilities or to chemicals otherwise owned or controlled by
Lyondell.

   Environmental laws may have a significant effect on:

  . the nature and scope of cleanup of contamination at current and former
    operating facilities;

  . the costs of transportation and storage of raw materials and finished
    products; and

  . the costs of the storage and disposal of wastes.

   Also, Superfund statutes may impose joint and several liability for the
costs of remedial investigations and actions on any company that:

  . generated the waste;

  . arranged for disposal of the waste;

  . transported the waste to the disposal site;

  . selected the disposal site; or

  . presently or formerly owned or operated the disposal site.

All the responsible parties, or any one of them, including Lyondell, may be
required to bear all of the costs of cleanup regardless of fault, legality of
the original disposal or ownership of the disposal site.

   Lyondell expects that the nature of its businesses will continue to subject
Lyondell to increasingly stringent environmental and health and safety laws and
regulations. It is difficult to predict the future interpretation and
development of these laws and regulations or their impact on Lyondell's future
earnings and operations. Lyondell anticipates that compliance will continue to
require increased capital expenditures and operating costs. In particular, the
ultimate effect of the Clean Air Act on Lyondell's operations will depend on
how the law is interpreted and implemented under regulations that are currently
being developed and on additional factors such as the development of
environmental control technologies.

   Lyondell's policy is to accrue costs relating to environmental matters when
it is probable that the costs will be required and can be reasonably estimated.
Estimated costs for future environmental compliance and remediation or other
costs are necessarily imprecise due to factors which include:

  . the continuing evolution of environmental laws and regulatory
    requirements;

  . the availability and application of technology;

  . the identification of presently unknown remediation sites; and

  . the allocation of costs among the responsible parties under applicable
    statutes.

On a quarterly basis, Lyondell evaluates the status of all significant existing
or potential environmental issues, develops or revises estimates of costs to
satisfy known remediation requirements and adjusts its accruals accordingly. As
of May 31, 1999, the reserve was $44 million. Based upon information presently
available, Lyondell does not expect that future environmentally related costs
will have a material adverse effect on its competitive or financial position or
its ongoing results of operations. However, it is not possible to predict
accurately the amount or timing of costs of any future environmental
remediation requirements. Future costs could be material to future quarterly or
annual results of operations.

Pending or future legislative initiatives or litigation may materially
adversely affect our MTBE sales or subject Lyondell to products liability,
which may affect our results of operations and affect the market price of the
new notes.

   MTBE is present in some water supplies in California and other states due to
gasoline leaking from underground storage tanks and recreational water craft.
This has led to public concern that MTBE may

                                       26
<PAGE>

contaminate drinking water supplies and result in a possible health risk. There
have been claims that MTBE travels more rapidly through soil, is more soluble
in water, and is more difficult and more costly to remediate than other
gasoline components.

   Heightened public awareness about MTBE has resulted in state and federal
legislative initiatives that have sought either to rescind the oxygenate
requirement for reformulated gasoline sold in California and other states or
restrict the use of MTBE. In April 1999, the governor of California announced
an intention to eliminate MTBE from gasoline sold in California by December 31,
2002. There is ongoing review of this issue and the ultimate resolution of the
appropriateness of using MTBE could result in a significant reduction in
Lyondell's MTBE sales.

   In addition, Lyondell has a take-or-pay MTBE sales contract with Atlantic
Richfield Company that contributes significant pre-tax margin. If the
legislative initiatives described above are enacted, Atlantic Richfield Company
has indicated that it might attempt to invoke a force majeure provision in the
contract to reduce the quantities of MTBE it purchases under the contract or to
terminate the contract. Lyondell would vigorously dispute either action. The
contract has an initial term expiring December 31, 2002 and provides for
formula-based prices that are currently significantly above spot market prices
for MTBE. A significant reduction in Lyondell's sales under the Atlantic
Richfield Company contract could have a negative impact on Lyondell's results
of operations.

Exchange rate fluctuations, exchange controls, political risks and other risks
relating to foreign operations affect Lyondell's international operations,
which may affect our results of operations and affect the market price of the
new notes.

   A number of risks affect Lyondell's international operations and exports to
foreign markets including:

  . currency exchange rate fluctuations;

  . trade barriers;

  . exchange controls;

  . national and regional labor strikes;

  . political risks;

  . risks of increases in duties and taxes; and

  . changes in laws and policies governing operations of foreign-based
    companies.

   Lyondell uses various types of foreign currency forward, option and swap
contracts to reduce foreign exchange exposures with respect to revenues,
capital commitments and other expenses denominated in foreign currencies.
However, these techniques may not protect Lyondell's reported results against
loss and Lyondell may incur material losses on these hedge contracts. Foreign
income tax rules reducing cash flow available to meet required debt service and
other obligations of Lyondell may apply to earnings of foreign subsidiaries and
intercompany payments.

   A number of Asian and Latin American economies have recently experienced
economic difficulties. Prolonged economic difficulties in the Asian and Latin
American markets could significantly impact worldwide demand and thereby place
downward pressure on margins, which, if material, could in turn have an adverse
effect on the business and operations of Lyondell.

                                       27
<PAGE>

Lyondell's quarterly results vary significantly, which could affect the market
price of the notes.

   Lyondell's quarterly results vary significantly depending on various
factors, most of which are beyond Lyondell's control, including:

  . changes in product prices;

  . changes in product demand;

  . changes in raw material costs or supply arrangements;

  . regional business activities, including a lower level of economic
    activity in Europe during the summer;

  . adverse developments in foreign markets;

  . fluctuations in shipments to customers;

  . foreign exchange fluctuations;

  . unanticipated expenses;

  . changes in interest rates; and

  . the scheduling of plant maintenance.

                                       28
<PAGE>

                             Cautionary Statement

   This prospectus is part of a registration statement we filed with the
Securities and Exchange Commission.

  . You should rely only on the information or representations provided in
    this prospectus.

  . We have not authorized any person to provide information in this
    prospectus other than that provided in this prospectus.

  . We have not authorized anyone to provide you with different information.

  . We are not making an offer of these securities in any jurisdiction where
    the offer is not permitted.

  . You should not assume that the information in this prospectus is accurate
    as of any date other than the date on the front of this document.

                          Forward-Looking Information

   Some of the statements in this prospectus include forward-looking
statements. Although Lyondell believes the expectations reflected in the
forward-looking statements are reasonable, they do involve assumptions, risks,
and uncertainties, and there are no assurances that these expectations will
prove to be correct. The actual results obtained by Lyondell could differ
materially from those anticipated in these forward-looking statements as a
result of factors beyond the control of Lyondell or its joint ventures. These
factors include:

  . the cyclical and highly competitive nature of the chemical and refining
    industries;

  . uncertainties associated with the United States and world-wide economies;

  . current and potential government regulatory actions in the United States
    and other countries;

  . substantial chemical capacity additions resulting in oversupply and
    declining prices and margins;

  . raw materials costs or supply arrangements;

  . Lyondell's ability to implement cost reductions; and

  . operating interruptions, including leaks, explosions, fires, mechanical
    failure, labor difficulties, unscheduled downtime, transportation
    interruptions, spills and releases, and other environmental risks.

   We undertake no obligation to publicly update or revise any forward-looking
statements, whether as a result of new information, future events, or
otherwise. You are cautioned against putting undue reliance on forward-looking
statements or projecting any future results based on these statements or
present or prior earnings levels. All oral or written forward-looking
statements attributable to us or persons acting on our behalf are expressly
qualified in their entirety by these cautionary statements.

                              The Exchange Offers

   We are offering to exchange our outstanding 9 5/8% Senior Secured Notes,
Series A, due 2007, 9 7/8% Senior Secured Notes, Series B, due 2007 and
10 7/8% Senior Subordinated Notes due 2009 for a like kind and principal amount
of our new 9 5/8% Senior Secured Notes, Series A, due 2007, 9 7/8% Senior
Secured Notes, Series B, due 2007 and 10 7/8% Senior Subordinated Notes due
2009. The offers to exchange the outstanding notes are separate, independent
offers. We may extend, delay or terminate one offer without extending,
delaying or terminating the other offers. The description of the exchange
offers contained in this prospectus applies to each of our exchange offers.
However, holders of a particular series of outstanding notes will need to
complete the exchange offer documentation related to that particular series of
notes. Holders who wish to exchange outstanding notes of more than one series
of notes must complete the separate exchange offer documentation related to
each series of notes they wish to tender.

                                      29
<PAGE>

Purpose and Effect of the Exchange Offers

   We are offering the new notes under this prospectus to satisfy our
obligations under the registration rights agreement we entered into with the
initial purchasers of the outstanding notes. Under this agreement, we agreed to
file a registration statement with the SEC relating to our offers to exchange
the outstanding notes for new notes. We also agreed to use our reasonable best
efforts to have the registration statement declared effective within 210 days
after May 17, 1999 and to consummate the exchange offers no later than 30
business days after the registration statement is declared effective.

   However, the SEC has recently proposed the repeal of its interpretations
permitting the use of a registration statement in connection with exchange
offers like ours. We cannot predict whether the SEC will act on this proposal
before completion of the exchange offers. If those interpretations are repealed
before the exchange offers are completed, holders of outstanding notes will not
be able to receive new notes under the exchange offers. Rather, we will be
required to register the outstanding notes under a shelf registration statement
in connection with resales by the holders. Holders will be required to deliver
a prospectus to the purchasers and will be subject to some of the civil
liability provisions under the Securities Act in connection with their resales.

   We will file with the SEC a shelf registration statement to cover resales of
any or all of the series of outstanding notes if any of the following events
occur:

  . an exchange offer is not permitted by applicable law or SEC policy; or

  . any holder of the outstanding notes which are Transfer Restricted
    Securities as defined in the registration rights agreement gives timely
    notice that:

    (1) it is prohibited by law or SEC policy from participating in the
        applicable exchange offer;

    (2) it cannot resell the new notes to the public without delivering a
        prospectus and this prospectus is not appropriate or available for
        those resales by it; or

    (3) it is a broker-dealer that holds outstanding notes acquired
        directly from us or any of our affiliates.

   If we are required to file a shelf registration statement, we will use our
reasonable best efforts to cause the SEC to declare effective the shelf
registration statement within 60 days of the deadline for filing the shelf
registration statement. In addition, each holder will be required to deliver
information to be used in connection with the shelf registration statement in
order to have its outstanding notes included in the shelf registration
statement. We will also use our reasonable best efforts to keep the shelf
registration statement effective for up to two years after May 17, 1999.

   We have the ability to suspend the shelf registration statement for no more
than:

  . 60 days during the first two years after May 17, 1999; and

  . 90 days during any subsequent year

if we determine, in our reasonable best judgment upon written advice of
counsel, that continued effectiveness would require disclosure of confidential
information or interfere with any financing, acquisition, reorganization or
other material transaction involving Lyondell.

   If we fail to comply with deadlines for completion of any of the exchange
offers, we will be required to pay liquidated damages to holders of the series
of outstanding notes so affected. Please read the section captioned
"Registration Rights Agreement" for more details regarding liquidated damages
and Lyondell's obligations under the registration rights agreement.

                                       30
<PAGE>

   To exchange an outstanding note for a freely transferable new note in an
exchange offer, you will be required to make all of the following
representations:

  . any new note you receive will be acquired in the ordinary course of your
    business;

  . you have no arrangement or understanding with any person to participate
    in the distribution of the outstanding notes or the new notes within the
    meaning of the Securities Act;

  . if you are not a broker-dealer or you are a broker-dealer but will not
    receive new notes for your own account in exchange for outstanding notes,
    that you are not engaged in and do not intend to participate in a
    distribution of the new notes within the meaning of the Securities Act;

  . if you are a broker-dealer that will receive new notes for your own
    account in exchange for outstanding notes, you will represent that the
    new notes are being acquired by you as a result of market-making
    activities or other trading activities, and you acknowledge that you will
    deliver a prospectus meeting the requirements of the Securities Act in
    connection with any resale of the new notes. It is understood that you
    are not admitting that you are an "underwriter" within the meaning of the
    Securities Act by acknowledging that you will deliver, and by delivering,
    a prospectus; and

  . you are not an "affiliate," as defined in Rule 405 of the Securities Act,
    of Lyondell or a broker-dealer tendering outstanding notes acquired
    directly from Lyondell for its own account.

Resale of New Notes

   Based on interpretations of the SEC staff in "no action letters" issued to
third parties, we believe that each new note issued under each of the exchange
offers may be offered for resale and be resold and otherwise transferred by the
holder of that new note without compliance with the registration and prospectus
delivery provisions of the Securities Act if:

  . you are not an "affiliate," within the meaning of Rule 405 under the
    Securities Act, of Lyondell, Lyondell Worldwide or Lyondell Nederland;

  . the new note is acquired in the ordinary course of your business; and

  . you do not intend to participate in the distribution of new notes.

   However, the SEC has not considered the legality of any of our exchange
offers in the context of a "no action letter," and there can be no assurance
that the staff of the SEC would make a similar determination with respect to
any of our exchange offers as in other circumstances.

   If you tender your notes in an exchange offer with the intention of
participating in any manner in a distribution of the new notes, you:

  . cannot rely on these interpretations in "no action letters" by the SEC
    staff; and

  . must comply with the registration and prospectus delivery requirements of
    the Securities Act, including being named as a selling noteholder, in
    connection with a secondary resale transaction.

   Unless an exemption from registration is otherwise available, any security
holder intending to distribute new notes should be covered by an effective
registration statement under the Securities Act containing the selling security
holder's information required by Item 507 or Item 508, as applicable, of
Regulation S-K under the Securities Act. This prospectus may be used for an
offer to resell or a resale or other re-transfer of the new notes of any series
only as specifically described in this prospectus. Failure to comply with the
registration and prospectus delivery requirements by a holder subject to these
requirements could result in that holder incurring liability for which it is
not indemnified by Lyondell. Only broker-dealers that acquired the outstanding
notes as a result of market-making activities or other trading activities may
participate in the exchange offers. Please read the section captioned "Plan of
Distribution" for more details regarding the transfer of the new notes.

                                       31
<PAGE>

Terms of the Exchange Offers

   Upon the terms and subject to the conditions described in this prospectus
and in the applicable letter of transmittal, we will accept for exchange any
outstanding notes properly tendered and not withdrawn before the expiration
date for the applicable exchange offer. We will issue $1,000 principal amount
of new notes in exchange for each $1,000 principal amount and like kind of
outstanding notes surrendered under an exchange offer. Outstanding notes may be
tendered only in integral multiples of $1,000. No exchange offer is conditioned
upon any minimum aggregate principal amount of outstanding notes being tendered
for exchange. No exchange offer is dependent on the consummation of any other
exchange offer.

   As of the date of this prospectus, $900 million of 9 5/8% Senior Secured
Notes, Series A, due 2007, $1 billion of 9 7/8% Senior Secured Notes, Series B,
due 2007 and $500 million of 10 7/8% Senior Subordinated Notes due 2009 are
outstanding. This prospectus and the applicable letter of transmittal are being
sent to all registered holders of these outstanding notes. There will be no
fixed record date for determining registered holders of outstanding notes
entitled to participate in any of the exchange offers.

   We intend to conduct the exchange offers according to the provisions of the
registration rights agreement, the applicable requirements of the Securities
Act and the Securities Exchange Act of 1934 and the rules and regulations of
the SEC. Outstanding notes that are not tendered for exchange in an exchange
offer will remain outstanding and continue to accrue interest and will be
entitled to the rights and benefits the holders have under the applicable
indenture and the registration rights agreement.

   We will be deemed to have accepted for exchange properly tendered
outstanding notes when we have given oral or written notice of the acceptance
to the exchange agent and complied with the applicable provisions of the
registration rights agreement. The exchange agent will act as agent for the
tendering holders for the purposes of receiving the new notes.

   If you tender outstanding notes in an exchange offer, you will not be
required to pay brokerage commissions or fees or, subject to the instructions
in the applicable letter of transmittal, transfer taxes with respect to the
exchange of your outstanding notes. We will pay all charges and expenses, other
than some applicable taxes as described below, in connection with the exchange
offers. It is important for holders to read the section labeled "--Fees and
Expenses" for more details regarding fees and expenses incurred in the exchange
offers.

   We will return any outstanding notes that we do not accept for exchange for
any reason without expense to the tendering holder as promptly as practicable
after the expiration or termination of the exchange offers.

Expiration Date

   Unless sooner terminated, the exchange offers will expire at 5:00 p.m., New
York City time on August   , 1999, unless, in our sole discretion, we extend
one or all of the exchange offers.

Extensions, Delay in Acceptance, Termination or Amendment

   We expressly reserve the right, at any time or from time to time to extend
the period of time during which any exchange offer is open. We may extend any
exchange offer independently of the expiration date of the other exchange
offers. During any extension, all outstanding notes previously tendered will
remain subject to the applicable exchange offer, and we may accept them for
exchange. To extend an exchange offer, we will notify the exchange agent orally
or in writing of any extension. We will also make a public announcement of the
extension no later than 9:00 a.m., New York City time, on the next business day
after the previously scheduled expiration date.

   If any of the conditions described below under "--Conditions to the Exchange
Offers" have not been satisfied, we reserve the right, in our sole discretion
to either:

  . delay accepting for exchange any outstanding notes;

                                       32
<PAGE>

  . extend any or all of the exchange offers; or

  . terminate any or all of the exchange offers

by giving oral or written notice of a delay, extension or termination to the
exchange agent. Subject to the terms of the registration rights agreement, we
also reserve the right to amend the terms of the exchange offers in any manner.

   Any delay in acceptance, extension, termination or amendment of an exchange
offer will be followed, as promptly as practicable, by oral or written notice
to the registered holders of the applicable outstanding notes. If we amend an
exchange offer in a manner we determine to constitute a material change, we
will promptly disclose the amendment by means of a prospectus supplement and,
if required, a post effective amendment to the registration statement of which
this prospectus forms a part. We will distribute the supplement to the
registered holders of the applicable outstanding notes. Depending upon the
significance of the amendment to the exchange offer and the manner of
disclosure to the registered holders, we will extend an exchange offer if the
exchange offer would otherwise expire during that period.

   Without limiting the manner in which we may choose to make public
announcements of any delay in acceptance, extension, termination or amendment
of any or all of the exchange offers, we will have no obligation to publish,
advertise or otherwise communicate any public announcement, other than by
making a timely release to the Dow Jones News Service.

Conditions to the Exchange Offers

   Despite any other term of the exchange offers, if in our reasonable judgment
any of the exchange offers, or the making of any exchange by a holder of
outstanding notes, would violate applicable law or any applicable
interpretation of the staff of the SEC:

  . we will not be required to accept for exchange, or to exchange any new
    notes for, any outstanding notes; and

  . we may terminate either or both of the exchange offers as provided in
    this prospectus before accepting any outstanding notes for exchange.

   In addition, we will not be obligated to accept for exchange the outstanding
notes of any holder that has not made:

  . the representations described under "--Purpose and Effect of the Exchange
    Offers," "--Procedures for Tendering" and "Plan of Distribution"; and

  . other representations as may be reasonably necessary under applicable SEC
    rules, regulations or interpretations to make available to us an
    appropriate form for registration of the new notes under the Securities
    Act.

   We expressly reserve the right to amend or terminate any or all of the
exchange offers, and to reject for exchange any outstanding notes not
previously accepted for exchange, upon the occurrence of any of the conditions
to the exchange offers specified above. We will give oral or written notice of
any extension, amendment, nonacceptance or termination to the exchange agent
and the holders of the outstanding notes as promptly as practicable.

   These conditions are for our sole benefit, and we may assert them or waive
them in whole or in part at any time or at various times in our sole
discretion. If we fail at any time to exercise any of these rights, this
failure will not mean that we have waived our rights. Each right will be deemed
an ongoing right that we may assert at any time or at various times. In
addition, we will not accept for exchange any outstanding notes tendered and
will not issue new notes in exchange for any outstanding notes if, at that
time, any stop order has been threatened or is in effect with respect to:

  . the registration statement of which this prospectus is a part; or

                                       33
<PAGE>

  . the qualification of the applicable indenture relating to the notes under
    the Trust Indenture Act of 1939.

Procedures for Tendering

 How to Tender Generally

   Only a registered holder of outstanding notes may tender outstanding notes
in an exchange offer. To tender in an exchange offer, you must either:

  (1)  . complete, sign and date the applicable letter of transmittal;

       . have the signature on the applicable letter of transmittal
         guaranteed if the letter of transmittal so requires;

       . mail, fax or deliver the applicable letter of transmittal to the
         exchange agent before the expiration date of the applicable exchange
         offer; and

       . deliver the outstanding notes to be tendered to the exchange agent
         with the applicable letter of transmittal prior to the expiration
         date or make book-entry delivery of the outstanding notes to the
         exchange agent, in which case the exchange agent must receive,
         before the expiration date, a timely confirmation of book-entry
         transfer of the outstanding notes into the exchange agent's account
         at DTC according to the procedure for book-entry transfer described
         below; or

  (2)  comply with the automated tender offer program procedures of DTC
       described below.

To be tendered effectively, the exchange agent must receive any physical
delivery of the applicable letter of transmittal and other required documents
at its address provided above under "Prospectus Summary--The Exchange Agent"
before the expiration date. Any tender by a holder that is not withdrawn before
the expiration date will constitute an agreement between the holder and us
according to the terms and subject to the conditions described in this
prospectus and in the applicable letter of transmittal.

   If you wish to tender your outstanding notes and cannot comply with the
requirement to deliver the applicable letter of transmittal and your
outstanding notes or use the automated tender offer program of the DTC before
the expiration date, you must tender your outstanding notes according to the
guaranteed delivery procedures described below.

   The method of delivery of the outstanding notes, the applicable letter of
transmittal and all other required documents to the exchange agent is at the
holder's election and risk. Except as provided in the applicable letter of
transmittal, delivery of these items will be deemed made only when actually
received or confirmed by the exchange agent. Rather than mail these items, we
recommend that holders use an overnight or hand delivery service. In all cases,
holders should allow sufficient time to ensure delivery to the exchange agent
before the expiration date. Holders should not send the applicable letter of
transmittal or outstanding notes to us. Holders may request their brokers-
dealers, commercial banks, trust companies or other nominees to effect the
above transactions on their behalf.

 Tendering Through DTC's Automated Tender Offer Program

   The exchange agent and DTC have confirmed that any financial institution
that is a participant in DTC's system may use DTC's automated tender offer
program to tender outstanding notes. Instead of physically completing and
signing the applicable letter of transmittal and delivering it to the exchange
agent, participants in the program may transmit their acceptance of the
exchange offers electronically. They may do so by causing DTC to transfer the
outstanding notes to the exchange agent according to its procedures for
transfer. DTC will then send an agent's message to the exchange agent.

   The term "agent's message" means a message transmitted by DTC, received by
the exchange agent and forming part of the book-entry confirmation, stating
that:

  . DTC has received an express acknowledgment from a participant in its
    automated tender offer program that is tendering outstanding notes which
    are the subject of book-entry confirmation;

                                       34
<PAGE>

  . the participant has received and agrees to be bound by the terms of the
    applicable letter of transmittal or, in the case of an agent's message
    relating to guaranteed delivery, that the participant has received and
    agrees to be bound by the applicable notice of guaranteed delivery; and

  . the agreement may be enforced against the participant.

 How to Tender if You are a Beneficial Owner

   If you beneficially own outstanding notes that are registered in the name of
a broker-dealer, commercial bank, trust company or other nominee and you wish
to tender those notes, you should contact the registered holder promptly and
instruct it to tender on your behalf. If you are a beneficial owner and wish to
tender on your own behalf, you must, before completing and executing the
applicable letter of transmittal and delivering your outstanding notes, either:

  . make appropriate arrangements to register ownership of the outstanding
    notes in your name; or

  . obtain a properly completed bond power from the registered holder of your
    outstanding notes.

The transfer of registered ownership may take considerable time and may not be
completed before the expiration date.

 Signatures and Signature Guarantees

   You must have the signatures on the applicable letter of transmittal or a
notice of withdrawal described below guaranteed by one of the following:

  . a member firm of a registered national securities exchange;

  . a member of the National Association of Securities Dealers, Inc.;

  . a commercial bank or trust company having an office or correspondent in
    the United States; or

  . an "eligible guarantor institution" within the meaning of Rule 17Ad-15
    under the Securities Exchange Act of 1934 that is a member of one of the
    recognized signature guarantee programs identified in the applicable
    letter of transmittal

unless the outstanding notes are tendered either:

  . by a registered holder who has not completed the box entitled "Special
    Issuance Instructions" or "Special Delivery Instructions" on the
    applicable letter of transmittal and the new notes are being issued
    directly to the registered holder of the outstanding notes tendered in
    the exchange for those new notes; or

  . for the account of a financial institution that is a participant in one
    of the medallion guarantee programs specified in the applicable letter of
    transmittal.

 When Endorsements or Bond Powers are Needed

   If the applicable letter of transmittal is signed by the registered holder
of the outstanding notes to be tendered and the new notes are to be issued to
the registered holder, then the outstanding notes are not required to be
endorsed and a bond power is not required. In any other case, a holder
tendering outstanding notes must either endorse the outstanding notes to be
tendered or provide a properly completed bond power. The bond power must be
signed by the registered holder as the registered holder's name appears on the
outstanding notes and a financial institution that is a participant in one of
the medallion guarantee programs specified in the applicable letter of
transmittal must guarantee the signature on the bond power.

   If the applicable letter of transmittal or any outstanding notes or bond
powers are signed by trustees, executors, administrators, guardians, attorneys-
in-fact, officers of corporations or others acting in a fiduciary or
representative capacity, those persons should so indicate when signing. They
should also submit evidence of their authority to deliver the applicable letter
of transmittal satisfactory to us unless we waive this requirement.

                                       35
<PAGE>

 Determinations Under the Exchange Offers

   We will determine in our sole discretion all questions as to the validity,
form, eligibility, time of receipt, acceptance of tendered outstanding notes
and withdrawal of tendered outstanding notes. Our determination will be final
and binding. We reserve the absolute right to reject any and all outstanding
notes not properly tendered or any outstanding notes our acceptance of which
would, in our opinion or the opinion of our counsel, be unlawful. We also
reserve the right to waive any defects, irregularities or conditions of tender
as to particular outstanding notes. Our interpretation of the terms and
conditions of an exchange offer, including the instructions in the applicable
letter of transmittal, will be final and binding on all parties. Unless waived,
any defects or irregularities in connection with tenders of outstanding notes
must be cured within the time we will determine. Neither we, the exchange agent
nor any other person will be under any duty to give notification of defects or
irregularities with respect to tenders of outstanding notes, and none of the
aforementioned will incur liability for failure to give notification. Tenders
of outstanding notes will not be deemed made until any defects or
irregularities have been cured or waived. Any outstanding notes received by the
exchange agent that are not properly tendered and the defects or irregularities
of which have not been cured or waived will be returned to the tendering
holder, unless otherwise provided in the applicable letter of transmittal, as
soon as practicable following the expiration date.

 When We Will Issue New Notes

   In all cases, we will issue new notes for the outstanding notes that we have
accepted for exchange under an exchange offer only after the exchange agent
timely receives both:

  . the outstanding notes or a timely book-entry confirmation of the
    outstanding notes into the exchange agent's appropriate account at DTC;
    and

  . a properly completed and duly executed applicable letter of transmittal
    and all other required documents or a properly transmitted agent's
    message.

 Return of Outstanding Notes Not Accepted or Exchanged

   If we do not accept any tendered outstanding notes for exchange for any
reason described in the terms and conditions of the exchange offers or if
outstanding notes are submitted for a greater principal amount than the holder
desires to exchange, the unaccepted or nonexchanged outstanding notes will be
returned without expense to their tendering holder. In the case of outstanding
notes tendered by book-entry transfer into the exchange agent's account at DTC
according to the procedures described below, the outstanding notes not
exchanged will be credited to an account maintained with DTC. These actions
will occur as promptly as practicable after the expiration or termination of
the applicable exchange offer.

 Your Representations to Us

   By signing or agreeing to be bound by the applicable letter of transmittal,
you will represent, among other things, that:

  . any new notes that you receive will be acquired in the ordinary course of
    your business;

  . you have no arrangement or understanding with any person to participate
    in the distribution of the new notes;

  . if you are not a broker-dealer or are a broker-dealer but will not
    receive new notes for your own account in exchange for outstanding notes,
    that you are not engaged in and do not intend to participate in a
    distribution of the new notes;

  . if you are a broker-dealer that will receive new notes for your own
    account in exchange for outstanding notes which were acquired for your
    own account, that the new notes are being acquired by you as a result of
    market-making activities or other trading activities and that you will
    deliver a

                                       36
<PAGE>

    prospectus, meeting the requirements of the Securities Act, in connection
    with any resale of the new notes; and

  . that you are not an "affiliate," as defined in Rule 405 of the Securities
    Act, of Lyondell or a broker-dealer tendering outstanding notes acquired
    directly from Lyondell for your own account.

Book-entry Transfer

   The exchange agent will make a request to establish an account with respect
to each series of the outstanding notes at DTC for purposes of the exchange
offers promptly after the date of this prospectus. Any financial institution
participating in DTC's system may make book-entry delivery of outstanding
notes by causing DTC to transfer the outstanding notes into the exchange
agent's respective account at DTC according to DTC's procedures for transfer.

   Holders whose outstanding notes are not immediately available or who are
unable to deliver confirmation of the book-entry tender of their outstanding
notes into the exchange agent's account at DTC or all other documents required
by the applicable letter of transmittal to the exchange agent on or before the
applicable expiration date must tender their outstanding notes according to
the guaranteed delivery procedures described below.

Guaranteed Delivery Procedures

   If you wish to tender your outstanding notes but your outstanding notes are
not immediately available or you cannot deliver your outstanding notes, the
applicable letter of transmittal or any other required documents to the
exchange agent or comply with the applicable procedures under DTC's automated
tender offer program before the expiration date, you may tender if:

  . the tender is made by or through a financial institution that is a
    participant in one of the medallion guarantee programs specified in the
    applicable letter of transmittal;

  . before the applicable expiration date, the exchange agent receives from
    the eligible guarantor financial institution, either a properly completed
    and duly executed notice of guaranteed delivery or a properly transmitted
    agent's message and notice of guaranteed delivery:

    (1) stating your name and address, the registration number(s) of your
        outstanding notes and the total principal amount of outstanding
        notes tendered;

    (2) stating that the tender is being made; and

    (3) guaranteeing that, within five business days after the expiration
        date, the applicable letter of transmittal or an agent's message in
        lieu thereof, together with the outstanding notes or a book-entry
        confirmation and any other documents required by the applicable
        letter of transmittal, will be deposited by the eligible guarantor
        institution with the exchange agent; and

  . the exchange agent receives the properly completed and executed
    applicable letter of transmittal, as well as all tendered outstanding
    notes in proper form for transfer or a book-entry confirmation and all
    other documents required by the applicable letter of transmittal, within
    five business days after the expiration date.

Upon request to the exchange agent, a notice of guaranteed delivery will be
sent to holders who wish to tender their outstanding notes according to the
guaranteed delivery procedures described above.

Withdrawal of Tenders

   Except as otherwise provided in this prospectus, you may withdraw your
tender at any time before 5:00 p.m., New York City time, on the expiration
date unless previously accepted for exchange. For a withdrawal to be
effective:

                                      37
<PAGE>

  . the exchange agent must receive a written notice of withdrawal at one of
    the addresses listed above under "Prospectus Summary--The Exchange
    Agent"; or

  . you must comply with the appropriate procedures of DTC's automated tender
    offer program system.

Any notice of withdrawal must comply with the following requirements:

  . specify the name of the person who tendered the outstanding notes to be
    withdrawn as depositor;

  . identify the outstanding notes to be withdrawn, including the
    registration numbers of the outstanding notes and the total principal
    amount of the outstanding notes;

  . contain the signature of the depositor in the same manner as the original
    signature on the applicable letter of transmittal used to deposit those
    outstanding notes or be accompanied by documents of transfer sufficient
    to permit the trustee for the outstanding notes to register the transfer
    into the name of the depositor withdrawing the tender; and

  . specify the name in which the outstanding notes are to be registered, if
    different from that of the depositor.

If outstanding notes have been tendered under the procedure for book-entry
transfer described above, any notice of withdrawal must specify the name and
number of the account at DTC to be credited with the withdrawn outstanding
notes and otherwise comply with the procedures of DTC.

   We will determine all questions as to the validity, form, eligibility and
time of receipt of notice of withdrawal. Our determination will be final and
binding on all parties. We will deem any outstanding notes so withdrawn not to
have been validly tendered for exchange for purposes of the exchange offers.

   Any outstanding notes that have been tendered for exchange but are not
exchanged for any reason will be returned to their holder without cost to the
holder. In the case of outstanding notes tendered by book-entry transfer into
the exchange agent's account at DTC according to the procedures described
above, the outstanding notes will be credited to an account maintained with
DTC for the outstanding notes. This return or crediting will take place as
soon as practicable after withdrawal, rejection of tender or termination of
the applicable exchange offer. Holders may re-tender properly withdrawn
outstanding notes by following one of the procedures described under the
caption "--Procedures for Tendering" above at any time on or before the
expiration date.

Fees and Expenses

   We will bear the expenses of soliciting tenders of the outstanding notes.
The principal solicitation is being made by mail. However, we may make
additional solicitation by telephone or in person by our officers and regular
employees and the officers and regular employees of our affiliates.

   We have not retained any dealer-manager in connection with any of the
exchange offers and will not make any payments to broker-dealers or others
soliciting acceptances of any of the exchange offers. We will, however, pay
the exchange agent reasonable and customary fees for its services and
reimburse it for its related reasonable out-of-pocket expenses. We may also
pay brokerage houses and other custodians, nominees and fiduciaries the
reasonable out-of-pocket expenses incurred by them in forwarding copies of
this prospectus, the applicable letter of transmittal and related documents to
the beneficial owners of the outstanding notes and in handling or forwarding
the tendered outstanding notes for exchange.

   We will pay the cash expenses to be incurred in connection with each of the
exchange offers, including:

  . SEC registration fees;

  . fees and expenses of the exchange agent and trustee;

  . accounting and legal fees and printing costs; and

  . related fees and expenses.

                                      38
<PAGE>

Transfer Taxes

   We will pay all transfer taxes, if any, applicable to the exchange of
outstanding notes under an exchange offer. The tendering holder, however, will
be required to pay any transfer taxes, whether imposed on the registered holder
or any other person, if:

  . new notes or outstanding notes for principal amounts not tendered or
    accepted for exchange are to be delivered to, or are to be issued in the
    name of, any person other than the registered holder of the outstanding
    notes tendered;

  . tendered outstanding notes are registered in the name of any person other
    than the person signing the applicable letter of transmittal; or

  . a transfer tax is imposed for any reason other than the exchange of the
    outstanding notes under the applicable exchange offer.

If satisfactory evidence of payment of any applicable transfer taxes or an
exemption from payment of any applicable taxes is not submitted with the
applicable letter of transmittal, the amount of the transfer taxes will be
billed directly to that tendering holder and the exchange agent will retain
possession of an amount of new notes with a face amount at least equal to the
amount of the transfer taxes due pending receipt by the exchange agent of the
amount of the taxes due.

Consequences of Failure to Exchange

   If you do not exchange your outstanding notes for new notes under the
exchange offers, your notes will remain subject to the existing restrictions on
transfer of the outstanding notes. In general, you may not offer or sell your
outstanding notes unless they are registered under the Securities Act or the
offer or sale of the outstanding notes is exempt from registration under the
Securities Act and applicable state securities laws. Except as required by the
registration rights agreement, we do not intend to register resales of the
outstanding notes under the Securities Act. Based on interpretations of the SEC
staff, you may offer for resale, or may resell or otherwise transfer new notes
issued in the exchange offers without compliance with the registration and
prospectus delivery provisions of the Securities Act, if you:

  . are not our "affiliate" within the meaning of Rule 405 under the
    Securities Act;

  . acquired the new notes in the ordinary course of their business; and

  . have no arrangement or understanding with respect to the distribution of
    the new notes to be acquired in the exchange offers.

If you tender in an exchange offer for the purpose of participating in a
distribution of the new notes, you both:

  . cannot rely on the applicable interpretations of the SEC; and

  . must comply with the registration and prospectus delivery requirements of
    the Securities Act in connection with a secondary resale transaction.

Accounting Treatment

   We will not recognize a gain or loss for accounting purposes upon the
consummation of any of the exchange offers. We will amortize expenses of each
of the exchange offers over the terms of the respective new notes under
generally accepted accounting principles.

Other

   Participation in the exchange offers is voluntary, and you should carefully
consider whether to accept. You are urged to consult your financial and tax
advisors in making your decision on what action to take.

                                       39
<PAGE>

   We may, in the future, seek to acquire untendered outstanding notes in open
market or privately negotiated transactions, through subsequent exchange offers
or otherwise. We have no present plans to acquire any outstanding notes that
are not tendered in the exchange offers or to file a registration statement to
permit resales of any untendered outstanding notes.

                                Use of Proceeds

   We will not receive any cash proceeds from the issuance of the new notes. In
consideration for issuing the new notes, we will receive in exchange a like
principal amount of outstanding notes. The outstanding notes surrendered in
exchange for the new notes will be retired and canceled and cannot be re-
issued. Accordingly, the issuance of the new notes will not result in any
change in our capitalization.

   We used the net proceeds from the May 1999 sale of the outstanding notes,
together with the net proceeds from our May 1999 offering of common stock and
new borrowings under the credit facility, to repay in full the $3.25 billion
outstanding under term loan C and term loan D of the credit facility and to
partially repay amounts outstanding under term loan A of our credit facility.

                                       40
<PAGE>

                                 Capitalization

   The following table shows the capitalization of Lyondell as of March 31,
1999 on an historical basis and as adjusted to reflect the May 1999 sale of the
outstanding notes, together with the concurrent offering of common stock and
borrowings under the credit facility, and the application of the proceeds from
these activities.

   You should read this table in conjunction with "Use of Proceeds,"
"Management's Discussion and Analysis of Financial Condition and Results of
Operations," the financial statements and the related notes and other financial
and operating data included elsewhere in this prospectus.

<TABLE>
<CAPTION>
                                                                 As of
                                                             March 31, 1999
                                                           -------------------
                                                           Actual  As Adjusted
                                                           ------  -----------
                                                              (dollars in
                                                               millions)
<S>                                                        <C>     <C>
Cash and cash equivalents................................. $  260    $  260
                                                           ======    ======
Debt, including current maturities of long-term debt (a):
  Secured debt
    Credit facility (b)................................... $6,288    $3,258
    Senior Secured Notes..................................     --     1,900
    Debentures (c)........................................    624       624
  Senior Subordinated Notes...............................     --       500
  Other debt..............................................      5         5
                                                           ------    ------
    Total debt, including current maturities of long-term
     debt.................................................  6,917     6,287
                                                           ------    ------
Minority interest.........................................    190       190
                                                           ------    ------
Stockholders' equity:
  Common stock, 250,000,000 shares authorized; 80,000,000
   issued (historical); 120,250,000 issued pro forma as
   adjusted...............................................     80       120
  Additional paid-in capital..............................    158       854
  Retained earnings.......................................    372       339 (d)
  Accumulated comprehensive income........................    (14)      (14)
  Treasury stock, at cost, 2,934,558 shares...............    (82)      (82)
                                                           ------    ------
    Total stockholders' equity............................    514     1,217
                                                           ------    ------
Total capitalization...................................... $7,621    $7,694
                                                           ======    ======
</TABLE>
- --------
(a) Does not include $3.1 billion in joint venture debt as of March 31, 1998,
    $713 million of which is Equistar debt for which Lyondell remains
    contingently liable.
(b) The decrease reflects application of proceeds net of credit facility
    amendment fees and debt issuance costs aggregating $106 million. As of
    March 31, 1999, debt under the credit facility was secured by a pledge of
    subsidiary stock and a pledge of Lyondell's rights to distributions from
    some existing joint ventures. Lyondell granted additional security in
    connection with the credit facility amendments in May 1999.
(c) Debentures were not secured as of March 31, 1999, but were secured at the
    time the credit facility amendments became effective in May 1999.
(d) The decrease reflects write-offs of the deferred debt issuance costs and
    credit facility amendment fees, net of tax.

                                       41
<PAGE>

                    Unaudited Pro Forma Financial Statements

   The unaudited pro forma balance sheet shown below gives effect to all of the
following:

  . the May 1999 refinancing of $3.4 billion of debt under the credit
    facility through the gross proceeds of the borrowing of an $850 million
    term loan E and a $150 million term loan F under the credit facility and
    the sale of the outstanding notes;

  . the May 1999 offering of 40,250,000 shares of common stock at an offering
    price of $19 per share and the application of the net proceeds to reduce
    amounts outstanding under the credit facility; and

  . the amended terms of the credit facility;

as if the transactions were completed as of March 31, 1999.

   The unaudited pro forma income statements for the periods ended March 31,
1999, March 31, 1998 and December 31, 1998 shown below give effect to the
transactions described above in addition to all of the following:

  . the acquisition of Lyondell Worldwide in a transaction accounted for as a
    purchase;

  . the repayment of a $345 million note payable to Equistar; and

  . the repayment of some other debt of Lyondell and Lyondell Worldwide;

as if all the transactions were completed as of January 1, 1998.

   The unaudited pro forma financial statements do not necessarily reflect the
results of operations or financial position of Lyondell that would have
resulted had the transactions above actually been consummated as of the dates
specified. Also, they are not necessarily indicative of the future results of
operations or future financial position of Lyondell.

   You should read the unaudited pro forma financial statements in conjunction
with the historical financial statements and notes of Lyondell and its joint
ventures which are included in this prospectus and incorporated by reference to
Lyondell's annual report on Form 10-K for the year ended December 31, 1998 and
quarterly report on Form 10-Q for the quarterly period ended March 31, 1999.

                                       42
<PAGE>

                           Lyondell Chemical Company
                       Unaudited Pro Forma Balance Sheet
                              As of March 31, 1999

<TABLE>
<CAPTION>
                                                Actual                Pro forma
                                               Lyondell Adjustments   Lyondell
                                               -------- -----------   ---------
                                                   (dollars in millions)
<S>                                            <C>      <C>           <C>
Cash and cash equivalents.....................  $  260                 $  260
Accounts receivable, net......................     434                    434
Inventories...................................     516                    516
Prepaid expenses and other current assets.....      17                     17
                                                ------    -------      ------
    Total current assets......................   1,227                  1,227
Property, plant and equipment, net............   4,430                  4,430
Investments and long-term receivables.........   1,066                  1,066
Deferred charges and other assets.............     874    $   (46)(a)
                                                              119 (b)     947
Goodwill......................................   1,421                  1,421
                                                ------    -------      ------
    Total assets..............................  $9,018    $    73      $9,091
                                                ======    =======      ======
Accounts payable..............................  $  194                 $  194
Current maturities of long-term debt..........   1,694    $(1,685)(c)
                                                               10 (d)      19
Other accrued liabilities.....................     391                    391
                                                ------    -------      ------
    Total current liabilities.................   2,279     (1,675)        604
Long-term debt, less current maturities.......   5,223      3,390 (d)
                                                           (2,345)(c)   6,268
Other liabilities and deferred credits........     398                    398
Deferred income taxes.........................     414                    414
Minority interest.............................     190                    190
Stockholders' equity
  Common stock, 250,000,000 shares authorized;
   80,000,000 issued (historical); 120,250,000
   issued pro forma as adjusted...............      80         40 (e)     120
  Additional paid-in capital..................     158        696 (e)     854
  Retained earnings...........................     372        (33)(a)     339
  Accumulated comprehensive income............     (14)                   (14)
  Treasury stock, at cost, 2,934,558 shares...     (82)                   (82)
                                                ------    -------      ------
    Total stockholders' equity................     514        703       1,217
                                                ------    -------      ------
    Total liabilities and stockholders'
     equity...................................  $9,018    $    73      $9,091
                                                ======    =======      ======
</TABLE>

             See notes to Unaudited Pro Forma Financial Statements.

                                       43
<PAGE>

                           Lyondell Chemical Company
                      Unaudited Pro Forma Income Statement
                   For the Three Months Ended March 31, 1999

<TABLE>
<CAPTION>
                                                Actual  Refinancing  Pro forma
                                               Lyondell adjustments  Lyondell
                                               -------- -----------  ---------
                                                   (dollars in millions,
                                                 except per share amounts)
<S>                                            <C>      <C>          <C>
Sales and other operating revenues............  $  855                $   855
Operating costs and expenses:
  Cost of sales...............................     630                    630
  Amortization of goodwill and other
   intangibles................................      24                     24
  Selling, general and administrative, and
   research and development expenses..........      72                     72
                                                ------     ----       -------
Operating income..............................     129                    129
Interest expense..............................    (146)    $(91)(f)
                                                             76 (g)
                                                             10 (h)
                                                             (3)(i)      (154)
Interest income...............................       6                      6
Other income (expense), net...................      (7)                    (7)
Income from equity investments................      21                     21
                                                ------     ----       -------
Income before income taxes and extraordinary
 items........................................       3       (8)           (5)
Provision for income taxes....................       1       (3)(j)        (2)
                                                ------     ----       -------
Income before extraordinary items.............  $    2     $ (5)      $    (3)
                                                ======     ====       =======
Basic and diluted income before extraordinary
 items per common share.......................  $ 0.02                $ (0.02)
Basic and diluted weighted average shares
 outstanding (in thousands)...................  77,072                117,322(e)
</TABLE>


             See notes to Unaudited Pro Forma Financial Statements.

                                       44
<PAGE>

                           Lyondell Chemical Company
                      Unaudited Pro Forma Income Statement
                   For the Three Months Ended March 31, 1998

<TABLE>
<CAPTION>
                                          Lyondell                   Pro forma
                                          Worldwide                  combined
                                       (formerly ARCO                Lyondell
                                      Chemical Company)                 and                      Pro
                           Actual          through      Acquisition  Lyondell     Refinancing   forma
                          Lyondell     March 31, 1998   adjustments  Worldwide    adjustments  Lyondell
                          --------    ----------------- -----------  ---------    -----------  --------
                                     (dollars in millions, except per share amounts)
<S>                       <C>         <C>               <C>          <C>          <C>          <C>
Sales and other
 operating revenues.....   $   --           $934                      $  934                   $   934
Operating costs and
 expenses:
  Cost of sales.........       --            722           $  (2)(k)     720                       720
  Amortization of
   goodwill and other
   intangibles..........       --             --              20 (l)      20                        20
  Selling, general and
   administrative, and
   research and
   development
   expenses.............        6             67                          73                        73
  Net unusual charges...        4             --                           4                         4
                           ------           ----           -----      ------                   -------
Operating income........      (10)           145             (18)        117                       117
Interest expense........       (7)           (18)             25 (m)                 $(91)(f)
                                                            (139)(n)                   76 (g)
                                                             (14)(o)    (153)          10 (h)
                                                                                       (3)(i)     (161)
Interest income.........        4              6                          10                        10
Other income, net.......       --              2                           2                         2
Income from equity
 investments............      117             --                         117                       117
                           ------           ----           -----      ------         ----      -------
Income before income
 taxes and extraordinary
 items..................      104            135            (146)         93           (8)          85
Provision for income
 taxes..................       39             43             (44)(j)      38           (3)(j)       35
                           ------           ----           -----      ------         ----      -------
Income before
 extraordinary items....   $   65           $ 92           $(102)     $   55         $ (5)     $    50 (j)(p)
                           ======           ====           =====      ======         ====      =======
Basic and diluted income
 before extraordinary
 items per common
 share..................   $ 0.82 (q)                                 $ 0.69 (q)               $  0.42 (q)
Basic weighted average
 shares outstanding (in
 thousands).............   78,713                                     78,713                   118,963 (e)
Diluted weighted average
 shares outstanding (in
 thousands).............   78,789                                     78,789                   119,039 (e)
</TABLE>

             See notes to Unaudited Pro Forma Financial Statements.

                                       45
<PAGE>

                           Lyondell Chemical Company
                      Unaudited Pro Forma Income Statement
                      For the Year Ended December 31, 1998

<TABLE>
<CAPTION>
                                          Lyondell                   Pro forma
                                          Worldwide                  combined
                                       (formerly ARCO                Lyondell
                                      Chemical Company)                 and                      Pro
                           Actual          through      Acquisition  Lyondell     Refinancing   forma
                          Lyondell      July 31, 1998   adjustments  Worldwide    adjustments  Lyondell
                          --------    ----------------- -----------  ---------    -----------  --------
                                     (dollars in millions, except per share amounts)
<S>                       <C>         <C>               <C>          <C>          <C>          <C>
Sales and other
 operating revenues.....   $1,447          $2,106                     $3,553                   $ 3,553
Operating costs and
 expenses:
  Cost of sales.........    1,089           1,584          $  (5)(k)   2,668                     2,668
  Amortization of
   goodwill and other
   intangibles..........       41              16             48 (l)
                                                              (1)(r)     104                       104
  Selling, general and
   administrative, and
   research and
   development
   expenses.............      152             192                        344                       344
  Net unusual charges...       61             (20)                        41                        41
                           ------          ------          -----      ------                   -------
Operating income........      104             334            (42)        396                       396
Interest expense........     (287)            (45)            65 (m)                 $(364)(f)
                                                            (326)(n)                   303 (g)
                                                             (31)(o)    (624)           42 (h)
                                                                                       (11)(i)    (654)(p)
Interest income.........       25               8                         33                        33
Other income, net.......       12              20                         32                        32
Income from equity
 investments............      235              --                        235                       235
                           ------          ------          -----      ------         -----     -------
Income before income
 taxes and extraordinary
 items..................       89             317           (334)         72           (30)         42
Provision for income
 taxes..................       37              93           (100)(j)      30           (13)(j)      17
                           ------          ------          -----      ------         -----     -------
Income before
 extraordinary items....   $   52          $  224          $(234)     $   42         $ (17)    $    25 (p)
                           ======          ======          =====      ======         =====     =======
Basic and diluted income
 before extraordinary
 items per common
 share..................   $ 0.67 (q)                                 $ 0.54 (q)               $  0.21 (q)
Basic weighted average
 shares outstanding (in
 thousands).............   77,669                                     77,669                   117,919 (e)
Diluted weighted average
 shares outstanding (in
 thousands).............   77,699                                     77,699                   117,949 (e)
</TABLE>


             See notes to Unaudited Pro Forma Financial Statements.

                                       46
<PAGE>

                           Lyondell Chemical Company
               Notes to Unaudited Pro Forma Financial Statements

(a) To reflect the write-off of deferred debt issuance costs and credit
    facility amendment fees of term loan C and term loan D and the partial
    write-off of deferred debt issuance costs and credit facility amendment
    fees of term loan A, offset by the impact of deferred taxes.
(b) To reflect payment and capitalization of debt issuance costs and credit
    facility amendment fees. Payments were made from proceeds of debt and
    equity offerings.
(c) To reflect the repayment of term loan C and term loan D and the partial
    repayment of term loan A with net proceeds from the sales of common stock
    and Senior Secured Notes and Senior Subordinated Notes and the borrowing of
    term loan E and term loan F.
(d) To reflect the sale of Senior Secured Notes and Senior Subordinated Notes
    and the borrowing of term loan E and term loan F.
(e) To reflect issuance of 40,250,000 shares of common stock at $19 per share
    less underwriting discounts.
(f) To reflect interest expense related to the sale of $900 million of 9 5/8%
    Senior Secured Notes, Series A, $1.0 billion of 9 7/8% Senior Secured
    Notes, Series B, and $500 million of 10 7/8% Senior Subordinated Notes, the
    borrowing of a $850 million term loan E and a $150 million term loan F and
    a 1.25% increase in the interest rate on the remaining portions of term
    loan A and term loan B. The impact of an increase in the LIBOR rate of 1/8
    of 1% would be to increase pro forma interest expense by approximately $4
    million for the year ended December 31, 1998 and $1 million each for the
    three months ended March 31, 1998 and 1999.
(g) To reflect elimination of interest expense as a result of repayment of term
    loan C and term loan D and the partial repayment of term loan A.
(h) To eliminate amortization expense of debt issuance costs due to repayment
    of term loan C and term loan D and the partial repayment of term loan A.
(i) To reflect amortization expense resulting from $89 million in debt issuance
    costs amortized over the life of the notes and term loan E and term loan F
    and a $17 million credit facility amendment fee amortized over the life of
    the credit facility, as amended.
(j) To reflect the tax effect of the pro forma adjustments and to adjust the
    tax provision to Lyondell's estimated income tax rate of 41.5% for the
    periods presented. State income tax is the primary difference between the
    estimated tax rate and the 35% federal statutory rate.
(k) To adjust depreciation expense for the estimated fair value of the acquired
    Lyondell Worldwide property, plant and equipment over an average useful
    life of 25 years. The purchase price allocation is preliminary. Lyondell is
    awaiting additional information related to the fair value of some assets
    acquired and liabilities assumed. Management does not expect the final
    determination of these matters to have a material effect on the purchase
    price allocation.
(l) To reflect amortization of goodwill and additional amortization expense for
    the estimated increase in other intangibles over periods ranging from four
    to 40 years.
(m) To reflect elimination of the historical Lyondell and Lyondell Worldwide
    interest expense.
(n) To reflect interest expense related to the issuance of the $2 billion term
    loan A, $1.25 billion term loan C and $2 billion term loan D, each at LIBOR
    plus 2%, combined with the historical interest expense on the $624 million
    Lyondell Worldwide debentures. LIBOR was 5.5% for the periods presented.
(o) To reflect amortization expense resulting from $129 million in debt
    issuance costs from financings under the credit facility over periods
    ranging from one to seven years.
(p) The unaudited pro forma income statement does not reflect a $50 million
    extraordinary charge, net of tax, related to repayment of term loan C and
    term loan D and the partial repayment of term loan A. The extraordinary
    charge represents the write-off of unamortized debt issuance costs and
    credit facility amendment fees related to the portion of the debt being
    repaid.

                                       47
<PAGE>

(q) Net unusual charges in 1998 include a $20 million reversal of a charge
    related to the restructuring and the asset reviews by Lyondell Worldwide,
    $57 million write-off of in-process research and development costs, $19
    million related to the formation of Equistar and $6 million for Lyondell's
    share of the LYONDELL-CITGO Refining unusual charge related to a
    renegotiation of a labor agreement. Net unusual charges for the three
    months ended March 31, 1998 include $7 million related to the formation of
    Equistar. Basic and diluted earnings per share before the effects of the
    net unusual charges, net of tax, on both a historical and pro forma basis
    are as follows:

<TABLE>
      <S>                                                                 <C>
      Three Months Ended March 31, 1998--Historical...................... $0.88
      Three Months Ended March 31, 1998--Pro Forma Combined.............. $0.75
      Three Months Ended March 31, 1998--Pro Forma for the Refinancing... $0.45
      Year ended December 31, 1998--Historical........................... $1.29
      Year ended December 31, 1998--Pro Forma Combined................... $1.01
      Year ended December 31, 1998--Pro Forma for the Refinancing........ $0.52
</TABLE>
(r) To eliminate Lyondell Worldwide historical goodwill amortization.

                                       48
<PAGE>

                       Selected Historical Financial Data

   The following tables show selected historical financial data for Lyondell
and Lyondell Worldwide. These data have been derived from the audited financial
statements of Lyondell and Lyondell Worldwide. You should read these data in
conjunction with Lyondell and Lyondell Worldwide financial statements and the
notes to those statements, and the other financial and operating data included
elsewhere in this prospectus, and incorporated by reference to Lyondell's
annual report on Form 10-K for the year ended December 31, 1998 and quarterly
report on Form 10-Q for the quarterly period ended March 31, 1999.

                      Historical Lyondell Chemical Company

<TABLE>
<CAPTION>
                                                                       For the three
                                                                        months ended
                              For the year ended December 31,            March 31,
                          -------------------------------------------  ---------------
                          1994(a)  1995(a)  1996(b)  1997(c)  1998(d)  1998(e)   1999
                          -------  -------  -------  -------  -------  -------  ------
                            (dollars in millions, except per share amounts and
                                                 ratios)
<S>                       <C>      <C>      <C>      <C>      <C>      <C>      <C>
Income statement data:
Sales and other
 operating revenues.....  $3,857   $4,936   $5,052   $2,878   $1,447   $   --   $  855
Gain on sale of assets..      --       --       30       --       --       --       --
                          ------   ------   ------   ------   ------   ------   ------
                           3,857    4,936    5,082    2,878    1,447       --      855
Cost of sales...........   3,296    4,026    4,570    2,250    1,089       --      630
Selling, general and
 administrative, and
 research and
 development expenses...     137      204      234      186      152        6       72
Amortization of goodwill
 and other intangible
 assets.................      --       --       --       --       41       --       24
Unusual charges.........      --       --       --       24       61        4       --
                          ------   ------   ------   ------   ------   ------   ------
Operating income
 (loss).................     424      706      278      418      104      (10)     129
Interest expense........     (74)     (80)     (81)     (75)    (287)      (7)    (146)
Interest income.........       5        6        3       14       25        4        6
Other income (expense),
 net....................      (6)     (14)      (4)     (17)      12       --       (7)
Income from equity
 investments............      --       --       --      116      235      117       21
                          ------   ------   ------   ------   ------   ------   ------
Income before income
 taxes..................     349      618      196      456       89      104        3
Provision for income
 taxes..................     126      229       70      170       37       39        1
                          ------   ------   ------   ------   ------   ------   ------
Net income..............  $  223   $  389   $  126   $  286   $   52   $   65   $    2
                          ======   ======   ======   ======   ======   ======   ======
Earnings per share--
 basic and diluted......  $ 2.78   $ 4.86   $ 1.58   $ 3.58   $  .67   $  .82   $  .02
Weighted average common
 shares outstanding (in
 thousands):
Basic...................  80,000   80,000   80,000   79,796   77,669   78,713   77,072
Diluted.................  80,061   80,072   80,045   79,813   77,699   78,789   77,072
Other data:
Depreciation and
 amortization(f)........  $   65   $   86   $  110   $   84   $  138       --       85
Capital
 expenditures(g)........     252      982      609       49       64       --       32
Ratio of earnings to
 fixed charges..........    4.8x     6.8x     2.2x     4.6x     1.2x     3.9x     1.0x
Balance sheet data:
Total assets............  $1,663   $2,606   $3,276   $1,559   $9,225   $1,397   $9,018
Total debt(h)(i)........     737    1,060    1,366      445    6,994      395    6,917
Total stockholders'
 equity.................      63      380      431      619      574      652      514
</TABLE>

                See notes to Selected Historical Financial Data.

                                       49
<PAGE>

                         Historical Lyondell Worldwide
                        (formerly ARCO Chemical Company)

<TABLE>
<CAPTION>
                                               For the year ended December
                                                           31,
                                               ------------------------------
                                                1994    1995    1996    1997
                                               ------  ------  ------  ------
                                                  (dollars in millions,
                                                     except ratios)
<S>                                            <C>     <C>     <C>     <C>
Income statement data:
Sales and other operating revenues............ $3,423  $4,282  $3,955  $3,995
Cost of sales.................................  2,586   3,102   3,067   3,230
Selling, general and administrative, and
 research and development expenses............    332     357     348     334
Unusual charges...............................     30      --      --     175
                                               ------  ------  ------  ------
Operating income..............................    475     823     540     256
Interest expense..............................    (85)    (89)    (86)    (80)
Interest income...............................      8      16      25      10
Other income (expense), net...................     18       6       8     (18)
Income before income taxes....................    416     756     487     168
Provision for income taxes....................    147     248     139      57
                                               ------  ------  ------  ------
Net income(j)................................. $  269  $  508  $  348  $  111
                                               ======  ======  ======  ======
Other operating data:
Depreciation and amortization................. $  235  $  233  $  222  $  229
Capital expenditures..........................    186     195     244     263
Ratio of earnings to fixed charges............   4.8x    7.6x    5.2x    2.4x
Balance sheet data:
Total assets.................................. $3,737  $4,135  $4,394  $4,116
Total debt(h).................................    936     912   1,019     913
Total stockholders' equity....................  1,659   1,969   2,014   1,793
</TABLE>


                See notes to Selected Historical Financial Data.

                                       50
<PAGE>

                  Notes to Selected Historical Financial Data

(a) Financial information for 1994 and 1995 includes 12 months of operating
    results for LYONDELL-CITGO Refining on a consolidated basis.
(b) Financial information for 1996 includes 12 months of operating results for
    LYONDELL-CITGO Refining and one month of operating results for Lyondell
    Methanol, each accounted for on a consolidated basis.
(c) Financial information for 1997 includes 12 months of operating results for
    Lyondell Methanol on a consolidated basis. It also includes 12 months of
    operating results for LYONDELL-CITGO Refining and one month of operating
    results for Equistar, each accounted for as an equity investment.
(d) Financial information for 1998 includes 5 months of operating results for
    Lyondell Worldwide on a consolidated basis. It also includes 12 months of
    operating results for Equistar, LYONDELL-CITGO Refining and Lyondell
    Methanol, each accounted for as an equity investment.
(e) Financial information for the three months ended March 31, 1998 is before
    the acquisition of Lyondell Worldwide which occurred in July 1998.
(f) Includes amortization of debt issuance costs of $23 million for 1998 and
    $14 million for the three months ended March 31, 1999.
(g) Includes $135 million in 1994, $458 million in 1995, $473 million in 1996
    and $45 million in 1997 for the upgrade project at LYONDELL-CITGO Refining,
    primarily funded by CITGO and non-recourse debt. Includes $356 million in
    1995 for the acquisition of the Alathon(TM) high density polyethylene
    business.
(h) Total debt represents long-term debt, notes payable and current maturities
    of long-term debt.
(i) Does not include $3.1 billion in joint venture debt as of March 31, 1999,
    $713 million of which is Equistar debt for which Lyondell remains
    contingently liable.
(j) Net income in 1997 includes an after-tax charge of $116 million for costs
    related to a restructuring program and asset reviews.

                                       51
<PAGE>

               Management's Discussion and Analysis of Financial
                      Condition and Results of Operations

   The following discussion is a description of Lyondell's business affairs
that we believe are material at this time. You should read it in conjunction
with the financial statements of Lyondell, Equistar and LYONDELL-CITGO Refining
and the notes to those statements included in this prospectus and incorporated
by reference to Lyondell's annual report on Form 10-K for the year ended
December 31, 1998 and quarterly report on Form 10-Q for the period ended March
31, 1999.

General

   Lyondell operates in the intermediate chemicals and derivatives segment and,
through its interests in Equistar, LYONDELL-CITGO Refining and Lyondell
Methanol, operates in the petrochemicals, polymers, refining and methanol
segments. Lyondell accounts for its investments in Equistar, LYONDELL-CITGO
Refining and Lyondell Methanol using the equity method of accounting. During
the third quarter of 1998, Lyondell acquired all of the outstanding shares of
ARCO Chemical Company, now Lyondell Worldwide. Lyondell Worldwide is treated as
a separate business segment, the intermediate chemicals and derivatives
segment. Lyondell obtained its credit facility to finance the acquisition,
paying $5.6 billion for the Lyondell Worldwide stock and assuming approximately
$870 million of Lyondell Worldwide debt, net of cash.

   The following chart shows the revenues for Lyondell and the revenues, equity
percentage owned by Lyondell and the accounting method used for each of
Lyondell's businesses for the periods indicated.

                             Structure of Lyondell

<TABLE>
<CAPTION>
                                                                   Three months
                                  Year ended December 31,              ended
                         -----------------------------------------   March 31,
                             1996          1997          1998          1999
                         ------------- ------------- ------------- -------------
                             (dollars in millions, except equity investment
                                              percentages)
<S>                      <C>           <C>           <C>           <C>
Lyondell
Revenues................   $5,052(a)     $2,878(b)     $1,447(c)      $  855
Lyondell Worldwide
Revenues................   $3,955(d)     $3,995(d)     $3,553(e)      $  855
Percentage of equity
 owned by Lyondell at
 period end.............      --            --           100%          100%
Method of accounting....      N/A           N/A      Consolidation Consolidation
Equistar(f)
Revenues................      N/A         $  365        $4,363        $1,104
Percentage of equity
 owned by Lyondell at
 period end.............      N/A           57%           41%           41%
Method of accounting....      N/A         Equity        Equity        Equity
LYONDELL-CITGO Refining
Revenues................    $2,816        $2,695        $2,055        $  432
Percentage of equity
 owned by Lyondell at
 period end.............    86.44%        58.49%        58.75%        58.75%
Method of accounting.... Consolidation    Equity        Equity        Equity
Lyondell Methanol(g)
Revenues................    $   14        $  165        $  104        $   11
Percentage of equity
 owned by Lyondell at
 period end.............      75%           75%           75%           75%
Method of accounting.... Consolidation Consolidation    Equity        Equity
</TABLE>
- --------
(a) Revenues for 1996 are before the contribution of assets to Equistar. They
    include 12 months of operating revenues for LYONDELL-CITGO Refining and one
    month of operating revenues for Lyondell Methanol, each accounted for on a
    consolidated basis.

                                       52
<PAGE>

(b) Revenues for 1997 include 12 months of operating revenues for Lyondell
    Methanol on a consolidated basis. The first 11 months of revenues for 1997
    are before the contribution of assets to Equistar. Revenues for 1997
    include 12 months of operating revenues for LYONDELL-CITGO Refining and one
    month of operating revenues for Equistar, each accounted for as an equity
    investment.
(c) Revenues for 1998 include 5 months of operating revenues for Lyondell
    Worldwide on a consolidated basis. Revenues exclude 12 months of operating
    revenues for Equistar, LYONDELL-CITGO Refining and Lyondell Methanol, each
    accounted for as an equity investment.
(d) Lyondell Worldwide was purchased by Lyondell in July 1998. Information
    presented for the periods above for Lyondell Worldwide represents the
    results of operations of Lyondell Worldwide on a historical basis.
(e) Pro forma revenues of Lyondell Worldwide for the year ended December 31,
    1998. For more information, see the Unaudited Pro Forma Financial
    Statements and the accompanying notes included in this prospectus.
(f) Equistar was formed in December 1997 as a joint venture between Lyondell
    and Millennium Chemicals Inc. Beginning May 15, 1998, the results of
    operations of the Occidental assets are included in the information
    presented above.
(g) Lyondell Methanol was formed in December 1996 by Lyondell and MCN
    Investment Corporation to own and operate the methanol facility at
    Equistar's Channelview, Texas facility.

                             Results of Operations

   Lyondell's historical operating results reflect the cyclical and volatile
nature of both the chemical and refining industries. These industries have
historically experienced alternating periods of tight supply, causing price and
profit margins to increase, followed by periods of substantial capacity
additions, resulting in oversupply and declining prices and profit margins. The
chemical industry has experienced a downward trend since peaking in 1995.
Lyondell experienced earnings declines in 1998 compared to 1997 primarily
because of lower prices in both the chemicals and refining industries. Lyondell
believes that consecutive-period comparisons are useful in illustrating the
cyclical movement of the industries in which Lyondell and its joint ventures
operate.

First Quarter 1999 Compared to Fourth Quarter 1998

   For the first quarter of 1999, Lyondell reported net income of $2 million
compared to a loss of $27 million for the fourth quarter of 1998. The fourth
quarter loss included unusual after-tax charges of $6 million primarily related
to a new labor agreement at LYONDELL-CITGO Refining and formation costs at
Equistar. The new labor agreement at LYONDELL-CITGO Refining is expected to
result in cost savings in the near term. The first quarter net income
improvement primarily reflected higher operating income in the intermediate
chemicals and derivatives segment and higher equity income from Equistar,
partly offset by lower equity income from LYONDELL-CITGO Refining.

   Operating income of the intermediate chemicals and derivatives segment was
$129 million in the first quarter of 1999 compared to $97 million in the fourth
quarter of 1998. The improvement was primarily due to lower administrative and
acquisition-related transition costs. Income from equity investment in Equistar
increased to $13 million in the first quarter of 1999 compared to a loss of $11
million in the fourth quarter of 1998. Improved results for the petrochemicals
and polymers businesses of Equistar reflected a tighter supply/demand
situation, leading to higher prices and margins. LYONDELL-CITGO Refining equity
income decreased to $11 million in the first quarter of 1999 from $22 million
in the fourth quarter of 1998. LYONDELL-CITGO Refining operating results were
negatively affected by the impact of ongoing reduced allocations of Venezuelan
extra heavy crude oil, lower margins on crude oil purchased in the spot market
and lower crude oil processing rates.

                                       53
<PAGE>

Intermediate Chemicals and Derivatives (Lyondell Worldwide)

   The following table shows actual volumes for this segment, including styrene
monomer volumes processed under long-term processing arrangements, which are
included in sales and other operating revenues. The co-product TBA is
principally used to produce the derivative MTBE.

<TABLE>
<CAPTION>
                                                    Fourth Quarter First Quarter
                                                         1998          1999
                                                    -------------- -------------
                                                       (volumes in millions)
<S>                                                 <C>            <C>
PO, PO derivatives, isocyanates (pounds)...........     1,077          1,080
Co-products:
Styrene monomer (pounds)...........................       819            782
TBA and derivatives (gallons)......................       245            265
</TABLE>

   Operating income was $129 million for the first quarter of 1999 compared to
$97 million for the fourth quarter of 1998. The improvement was primarily
attributable to lower administrative and acquisition-related transition costs
and the benefit of a seasonal increase in deicers sales volumes, partly offset
by lower PO merchant volumes and margins. Core product volumes, defined as PO,
PO derivatives and isocyanates, were flat as increased PO derivatives volumes,
primarily deicers, were offset by lower PO merchant volumes. PO merchant
volumes decreased due to reduced sales to PO co-producers and planned customer
downtime during the first quarter. PO margins declined as the market
anticipated industry capacity additions in Europe later in 1999. Styrene
monomer volumes decreased 5% in the first quarter of 1999 compared to the
fourth quarter of 1998 due to the timing of export shipments to Asia. TBA and
derivatives volumes increased 8% primarily due to higher MTBE volumes.

Petrochemicals and Polymers (Equistar)

   Equistar reported income before federal income tax of $7 million in the
first quarter of 1999 compared to a pretax loss of $51 million for the fourth
quarter of 1998. The increase was primarily attributable to higher ethylene
prices and margins, reflecting a tighter supply/demand balance in the first
quarter of 1999. Polymers prices also improved but margin improvements were
limited by higher ethylene raw material costs. The fourth quarter of 1998 was
also negatively affected by charges related to Equistar's formation.

   In February 1999, Equistar completed a $900 million offering of senior
unsecured notes. The proceeds were used to refinance existing debt and capital
lease obligations of Equistar.

   In May 1999, Equistar shut down both olefins units at its Channelview, Texas
facility due to a reoccurrence of a compressor problem in one unit and a heater
malfunction in the second unit. Both units resumed operations by the end of May
1999. Equistar expects that any financial impact related to these temporary
shutdowns will be limited by property damage insurance and business
interruption insurance.

Refining (LYONDELL-CITGO Refining)

   LYONDELL-CITGO Refining had income before federal income tax of $15 million
in the first quarter of 1999 compared to $42 million, before unusual charges,
in the fourth quarter of 1998. The unusual charge of $10 million in the fourth
quarter was related to a new labor agreement. LYONDELL-CITGO Refining operating
results were negatively affected by the impact of ongoing reduced allocations
of Venezuelan extra heavy crude oil, lower margins on crude oil purchased in
the spot market and lower crude oil processing rates. Total crude oil
processing rates averaged 255,000 barrels per day in the first quarter of 1999
compared to 273,000 barrels per day in the fourth quarter of 1998. LYONDELL-
CITGO Refining reduced crude oil processing rates in the first quarter of 1999
due to declining margins on crude oil purchased in the spot market.

   LYONDELL-CITGO Refining's financial results continue to be impacted by
reductions in PDVSA crude oil allocations, which began in August 1998 and
continued following a March 1999 OPEC agreement to further

                                       54
<PAGE>

limit oil production. Reduced allocations of crude oil supplied by PDVSA force
LYONDELL-CITGO Refining to purchase a portion of its crude oil in the spot
market, thereby reducing LYONDELL-CITGO Refining's pretax income and,
accordingly, Lyondell's pro rata share of LYONDELL-CITGO Refining's income.
Even though LYONDELL-CITGO Refining may continue to receive a reduced crude oil
allocation from PDVSA, LYONDELL-CITGO Refining has begun to see some
improvement in the spot margins for crude oil.

   On May 3, 1999, LYONDELL-CITGO Refining shut down a fluid catalytic cracker
with a capacity of 92,000 barrels per day as a result of a malfunction that
damaged the main air blower. The unit resumed operations in late May 1999. On
May 7, 1999, LYONDELL-CITGO Refining shut down one of two coker units following
a fire. LYONDELL-CITGO Refining estimates that the damaged coker will resume
full operations by early July 1999. As a result of these incidents, crude oil
processing rates have been reduced. LYONDELL-CITGO Refining is currently
putting Venezuelan crude oil into inventory and expects to benefit from higher
processing rates once repairs have been completed. To the extent the business
interruption impact and the cost of repairs exceed insurance deductibles of $10
million each, per incident, Lyondell expects any excess cost to be covered by
insurance.

First Quarter of 1999 Compared to First Quarter of 1998

Intermediate Chemicals and Derivatives (Lyondell Worldwide)

   Net income. Net income of $2 million in the first quarter of 1999 decreased
from $65 million in the first quarter of 1998. Pretax income from equity
investments decreased $96 million, or about $61 million after tax, in the first
quarter of 1999 compared to the first quarter of 1998. Operating income of
Lyondell Worldwide in the first quarter of 1999 was more than offset by higher
interest expense related to Lyondell's credit facility.

   Revenues, Operating Costs and Expenses. The revenues and operating costs and
expenses for the first quarter of 1999 primarily consist of the operating
results of Lyondell Worldwide, which are included prospectively from August 1,
1998. The first quarter of 1998 includes only Lyondell's administrative
expenses. Income from Lyondell's interests in Equistar, LYONDELL-CITGO Refining
and Lyondell Methanol is reported as income from equity investments.

   Income from Equity Investments. Income from equity investments decreased
substantially from $117 million in the first quarter of 1998 to $21 million in
the first quarter of 1999.

   Lyondell's income from its equity investment in Equistar was $13 million in
the first quarter of 1999 compared to $76 million for the first quarter of
1998. The decrease was attributable to substantially lower ethylene and
polymers prices and margins in the first quarter of 1999 compared with the same
period for 1998, reflecting ongoing excess industry capacity. The first quarter
of 1999 benefit from the addition of the Occidental assets in May 1998 was
substantially offset by costs associated with the LaPorte, Texas plant
maintenance and operating problems at two of Equistar's plants in the first
quarter of 1999.

   Lyondell's income from its equity investment in LYONDELL-CITGO Refining was
$11 million in the first quarter of 1999 compared to $35 million for the first
quarter of 1998. The decline was primarily due to reduced allocations of extra
heavy Venezuelan crude oil under the LYONDELL-CITGO Refining crude supply
agreement.

   Interest Expense. Interest expense was $146 million in the first quarter of
1999 compared to $7 million in the first quarter of 1998. The increase reflects
higher debt levels as a result of amounts borrowed under Lyondell's credit
facility and debt assumed as part of the acquisition of Lyondell Worldwide.

                                       55
<PAGE>

Petrochemicals and Polymers (Equistar)

   Revenues. Petrochemical revenues for the first quarter of 1999 increased
compared to the first quarter of 1998, primarily due to increased sales volumes
as a result of the addition of the Occidental assets in May 1998. This increase
was partially offset by lower industry sales prices for ethylene, propylene and
co-products. The decrease in industry sales prices is primarily attributable to
ongoing excess industry capacity and downward pressure from raw materials
costs, which declined throughout 1998. The sales price decreases began in the
fourth quarter of 1997 and continued their downward trend through most of 1998.
U.S. market sales prices increased during the first quarter of 1999, but
average prices in the first quarter of 1999 were still lower compared to the
first quarter of 1998.

   Polymers revenues decreased in the first quarter of 1999 compared to the
first quarter of 1998 as a result of decreases in industry sales prices, partly
offset by a 6% increase in volumes. The sales price decreases reflect excess
industry supply, as industry capacity additions exceeded demand growth, and
downward pressure from raw materials costs, which declined throughout 1998. The
decreases in sales prices started during the fourth quarter of 1997 and
continued in a downward trend through 1998. Industry prices increased during
the first quarter of 1999, however average first quarter of 1999 prices were
significantly lower than the first quarter of 1998. The volume increase
reflects additional polyethylene capacity.

   Operating Income. Petrochemicals operating income decreased in the first
quarter of 1999 compared to the first quarter of 1998 primarily due to lower
product margins, as industry sales prices declined more than raw materials
costs, and the effects of the LaPorte plant maintenance in the 1999 period.
These were partly offset by the benefit of increased volumes as a result of the
addition of the Occidental assets in May 1998.

   Polymers operating income for the first quarter of 1999 decreased compared
to first quarter of 1998 primarily due to decreases in polymers sales prices,
which more than offset decreases in polymers raw materials costs, reducing
product margins.

   Interest expense. Interest expense increased from $32 million in the first
quarter of 1998 to $43 million in the first quarter of 1999, primarily
reflecting higher levels of long-term debt due to the addition of the
Occidental assets in May 1998.

Refining (LYONDELL-CITGO Refining)

   Revenues. Revenues for LYONDELL-CITGO Refining were $432 million in the
first quarter of 1999 compared to $529 million in the 1998 period. The decrease
primarily resulted from lower industry prices for refined products, partly
offset by a 7% increase in refined products volumes. Sales prices declined as a
result of lower industry crude oil prices in the first quarter of 1999 compared
to the 1998 period.

   Operating Income. LYONDELL-CITGO Refining's operating income was $24 million
in the first quarter of 1999 compared to $65 million in the first quarter of
1998. The decrease primarily reflected the effects of reduced allocations of
extra heavy Venezuelan crude oil.

1998 Compared to 1997

Intermediate Chemicals and Derivatives (Lyondell Worldwide)

   The following discussion compares Lyondell's pro forma 1998 results to pro
forma 1997 results. The pro forma adjustments give effect to:

  . the Lyondell Worldwide acquisition and related debt financing which
    occurred in July 1998;

  . the formation of Equistar which occurred in December 1997; and

  . the deconsolidation of Lyondell Methanol which occurred in January 1998

as if each occurred as of January 1, 1997 and 1998, respectively.

  These pro forma adjustments are intended to facilitate a comparison of the
results of the intermediate chemicals and derivatives business. Although
Lyondell believes that the assumptions underlying these pro

                                       56
<PAGE>

forma adjustments are reasonable and provide a reasonable basis for analyzing
changes in the intermediate chemicals and derivatives business from 1997 to
1998, the amounts presented below are not intended to reflect what the results
of operations of Lyondell and Lyondell Worldwide would have been had the
transactions reflected in the pro forma adjustments actually occurred as of the
dates given.

   The following table shows sales volumes for the intermediate chemicals and
derivatives business:

<TABLE>
<CAPTION>
                                                                   For the year
                                                                       ended
                                                                   December 31,
                                                                   -------------
                                                                    1997   1998
                                                                   ------ ------
                                                                    (volumes in
                                                                     millions)
<S>                                                                <C>    <C>
PO, PO derivatives and TDI (pounds)...............................  4,135  4,159
Co-products:
  Styrene monomer (pounds)........................................  2,577  2,912
  TBA and derivatives (gallons)...................................  1,054    995
</TABLE>

   Revenues. Pro forma revenues of $3.6 billion for 1998 decreased 11% compared
to $4.0 billion for 1997. The decrease of $442 million was primarily due to
lower average sales prices in 1998, reflecting a combination of:

  . downward pressure from lower raw materials costs;

  . ongoing competition in PO derivatives and TDI markets;

  . the negative effects of a stronger U.S. dollar on foreign sales; and

  . the effects of weaker Asian markets.

PO and PO derivatives volumes were essentially flat in 1998 versus 1997 as
stronger demand for some PO derivatives in the United States and Europe was
offset by lower volumes in Asian markets. The increase in styrene monomer
volumes in 1998 was a result of the capacity expansion at the PO facility in
Channelview, Texas completed in the second quarter of 1998. The increased
capacity was dedicated to long-term styrene monomer processing arrangements.
TBA and derivatives volumes decreased 6% in 1998, mainly due to lower MTBE
demand.

   Operating costs. Pro forma cost of sales of $2.7 billion for 1998 decreased
15% compared to $3.2 billion for 1997. The 15% decrease was greater than the
11% decrease in revenues, reflecting comparatively lower raw material prices.
Pro forma selling, general and administrative and research and development
expenses of $344 million for 1998 remained flat as compared to 1997.

   Operating income. Pro forma operating income of $396 million for 1998
increased by 146% compared to $161 million for 1997. Operating income for 1998
reflected unusual charges of $41 million, primarily related to the write-off of
in-process research and development projects of Lyondell Worldwide and Equistar
formation costs. Operating income for 1997 reflected unusual charges of $191
million, primarily related to restructuring and other costs of Lyondell
Worldwide and Equistar formation costs. Excluding these items, operating income
of $437 million for 1998 increased by $85 million.

   Net income. Pro forma net income of $42 million for 1998 increased 55%
compared to $27 million for 1997. Excluding the effects of the unusual charges
in both years, pro forma net income of $66 million for 1998 decreased $84
million compared to 1997 as lower equity income from the joint ventures more
than offset improved operating results and lower foreign exchange losses of
Lyondell Worldwide.

Petrochemicals and Polymers (Equistar)

   The following discussion compares Equistar's actual 1998 results to combined
1997 results. The 1998 results include results attributable to the Occidental
assets contributed to Equistar from May 15, 1998, the date on which they were
contributed. The 1997 results have been prepared on a pro forma basis and
combine 11 months of the operations of the businesses contributed to Equistar
by Lyondell and Millennium Chemicals and

                                       57
<PAGE>

one month of Equistar's actual operations. These pro forma adjustments are
intended to facilitate a comparison of the results of the petrochemicals and
polymers business. Although Lyondell believes that the assumptions underlying
these pro forma adjustments are reasonable and provide a reasonable basis for
analyzing changes in the Equistar business from 1997 to 1998, the amounts
presented below are not intended to reflect what the results of operations of
Equistar would have been had the transactions reflected in the pro forma
adjustments actually occurred as of the dates given and are not necessarily
indicative of future operations of Equistar.

Petrochemicals

   Revenues. Petrochemicals revenues of $3.5 billion for 1998 decreased 10%
compared to combined 1997 revenues of $3.9 billion. The decrease is primarily
due to lower industry sales prices for ethylene, propylene and co-products,
partially offset by increased sales volumes as a result of the addition of the
Occidental assets in May 1998. The decrease in sales prices is primarily
attributable to increased industry capacity and downward pressure on sales
prices as a result of lower raw materials costs. The sales price decreases
began in the fourth quarter of 1997 and continued their downward trend through
most of 1998. Ethylene and propylene volumes were 16,716 million pounds in
1998, a 77% increase over combined volumes of 9,429 million pounds in 1997. The
increase in ethylene and propylene volumes is primarily a result of the
addition of the Occidental assets. Aromatics volumes were 271 million gallons
in 1998, a 40% increase over combined volumes of 193 million gallons in 1997.
The increase in aromatics volumes is primarily a result of the addition of the
Occidental assets.

   Operating costs. Petrochemicals cost of sales of $3.1 billion for 1998
decreased 1% from $3.2 billion for combined 1997. This decrease was less than
the 10% decrease in revenues, reflecting the fact that raw materials prices
declined at a slower rate than petrochemicals product prices. Petrochemicals
selling expenses of $14 million for 1998 decreased 55% from $31 million for
1997. This decrease reflected lower personnel costs as a result of
consolidation of operations.

   Operating income. Petrochemicals operating income of $319 million for 1998
decreased 53% compared to combined 1997 operating income of $684 million,
primarily due to lower product margins as sales prices declined more than raw
materials costs and, to a lesser extent, slightly higher fixed costs. The
decrease in operating income as a result of the lower margins was partially
offset by the addition of the Occidental assets in May 1998.

Polymers

   Revenues. Polymers revenues of $2.1 billion for 1998 decreased 18% compared
to combined 1997 revenues of $2.5 billion as a result of decreases in industry
sales prices. These sales price decreases were a result of excess industry
supply and lower raw materials costs. The excess industry supply started during
the fourth quarter of 1997 and continued in a downward trend through 1998.
Polymers volumes were 6,488 million pounds in 1998, a 6% increase over combined
volumes of 6,132 million pounds in 1997. Volume increases were a result of
capacity additions at three facilities, as well as unscheduled industry
outages, in 1997.

   Operating costs. Polymers cost of sales of $1.8 billion for 1998 decreased
16% from $2.1 billion for combined 1997. This decrease was less than the 18%
decrease in revenues, reflecting the fact that raw materials prices declined at
a slower rate than polymers product prices. Polymers selling expenses of $82
million for 1998 decreased 40% from $137 million for combined 1997. This
decrease primarily reflected lower personnel costs as a result of consolidation
of operations.

   Operating income. Polymers operating income of $177 million for 1998
decreased 24% compared to combined 1997 operating income of $233 million. The
decrease is primarily due to decreases in polymers sales prices, which more
than offset decreases in polymers raw materials costs.

Restructuring Charges

   Equistar's unusual charges, which are not allocated to either the
petrochemicals or polymers segments, were $42 million in 1997 and $35 million
in 1998. Both years included costs associated with the formation of

                                       58
<PAGE>

Equistar and the consolidation of some operations. These costs were paid by
Equistar and allocated to the Equistar partners according to their ownership
percentages.

Refining (LYONDELL-CITGO Refining)

   The following discussion compares LYONDELL-CITGO Refining's actual 1998
results to its actual 1997 results.

   Increased processing capacity resulting from the upgrade project enabled
LYONDELL-CITGO Refining to increase its crude processing rates and produce
greater refined product volumes, as shown in the table below.

<TABLE>
<CAPTION>
                                                                  Year ended
                                                                 December 31,
                                                                 --------------
                                                                  1997    1998
                                                                 ------  ------
                                                                 (barrels per
                                                                    day in
                                                                  thousands)
      <S>                                                        <C>     <C>
      Crude processing rates:
        Crude supply agreement--coked...........................    203     223
        Other heavy crude oil--coked............................      7      19
        Other crude oil.........................................     14      18
                                                                 ------  ------
          Total.................................................    224     260
                                                                 ======  ======
      Refined product sales volumes:
        Gasoline................................................    111     121
        Diesel and heating oil..................................     68      79
        Jet fuel................................................     17      17
        Aromatics...............................................     11      10
        Other refined products..................................     93     103
                                                                 ------  ------
          Total.................................................    300     330
                                                                 ======  ======
</TABLE>

   Revenues. Revenues for LYONDELL-CITGO Refining, including sales to
affiliates, of $2.1 billion for 1998 decreased 22% compared to $2.7 billion for
1997. The decrease primarily resulted from lower refined products prices, which
declined as a result of lower industry crude prices. These decreases were
partially offset by higher sales volumes as production levels increased,
reflecting a full year's benefit from the upgrade project.

   Operating costs. LYONDELL-CITGO Refining's cost of sales of $1.8 billion for
1998 decreased 28% from $2.5 billion for 1997. The benefits of lower raw
material prices under the crude supply agreement were offset in part by the
lower allocations under that agreement, which began in August 1998 and required
LYONDELL-CITGO Refining to seek additional crude oil at higher prices in the
spot market. LYONDELL-CITGO Refining's selling, general and administrative
expenses of $78 million for 1998 increased 8% from $72 million for 1997. This
increase reflected increased coke handling charges and other selling costs
related to increased production and higher sales volumes.

   Operating income. LYONDELL-CITGO Refining's operating income of $213 million
for 1998 increased 18% compared to $183 million for 1997. The increase
reflected the benefits of the upgrade project, which resulted in higher average
margins as higher volumes of extra heavy crude oil were processed in the coking
mode. The upgrade project was completed in the first quarter of 1997.
Initially, higher costs were incurred due to normal operational start-up
activities during which the refinery did not operate at peak rates. Cost
savings resulting from improved operational efficiency in 1998 were partly
offset by higher depreciation expense attributable to the upgrade project.

   Interest expense. LYONDELL-CITGO Refining's net interest expense of $43
million for 1998 increased 23% compared to $35 million for 1997. Interest
expense on debt related to construction of the upgrade project was capitalized
through its completion, including the first quarter of 1997.

                                       59
<PAGE>

Methanol (Lyondell Methanol)

   Lyondell's share of Lyondell Methanol's earnings for 1998 was $6 million.
Lyondell would have recorded approximately $43 million for its share of
Lyondell Methanol's earnings had Lyondell followed the equity method of
accounting for its investment in Lyondell Methanol during 1997. The decrease
was due to significant declines in the sales prices of methanol beginning in
the first quarter of 1998. Increased supply due to new capacity, as well as
weaker demand from Asia, caused worldwide methanol price declines.

                        Liquidity and Capital Resources

 Cash Flows

   Operating activities. Lyondell's cash provided by operating activities
totaled $263 million for 1998, a 2% decrease compared to $269 million for 1997.
Cash provided by operating activities in 1998 included $160 million of proceeds
from the sale of domestic receivables in December 1998 under a three-year
revolving securitization agreement. Cash provided by operations in 1998 was
negatively affected by the payment of liabilities associated with the
acquisition of Lyondell Worldwide and the settlement of accounts payable
retained by Lyondell in the formation of Equistar in December 1997.

   Investing activities. Lyondell completed the acquisition of Lyondell
Worldwide on July 28, 1998 for a total cost of approximately $5.9 billion,
excluding assumed debt. Lyondell made capital expenditures of $64 million in
1998, primarily related to Lyondell Worldwide. Equistar's 1998 capital
expenditures totaled $200 million, of which $88 million was Lyondell's pro rata
share. LYONDELL-CITGO Refining made 1998 capital expenditures of $61 million,
of which Lyondell funded $35 million through loans to LYONDELL-CITGO Refining.
Lyondell's 1999 capital budget is $273 million, including its $123 million pro
rata share of its joint ventures' capital budgets.

   Distributions in excess of earnings for 1998 were $403 million by Equistar,
$20 million by LYONDELL-CITGO Refining and $12 million by Lyondell Methanol.
The $403 million excess distribution from Equistar includes $197 million
resulting from Lyondell's repayment of a $345 million note to Equistar.

   Financing activities. Cash provided by financing activities was $5.4 billion
for 1998, compared to cash used in financing activities of $176 million for
1997. During the third quarter of 1998, Lyondell obtained its $7 billion credit
facility. Lyondell's $6.5 billion borrowing under the credit facility in
connection with the Lyondell Worldwide acquisition was used for:

  . the purchase of all outstanding shares of Lyondell Worldwide stock;

  . repayment of debt, including a $345 million note to Equistar and $283
    million in other debt of Lyondell and Lyondell Worldwide; and

  . payment of some debt issuance costs.

As part of the acquisition, Lyondell also assumed approximately $870 million of
Lyondell Worldwide debt.

   Cash used in other financing activities in 1998 consisted primarily of $59
million used to repurchase Lyondell common stock. From time to time Lyondell
purchases its shares in the market to issue under Lyondell's employee
compensation and benefits plans, including stock option and restricted stock
plans. In addition, in the second quarter of 1998 Lyondell completed a stock
buyback program authorized in September 1997. A total of 2,567,051 shares were
purchased under the program for $75 million.

   Lyondell paid regular quarterly dividends of $.225 per share of common stock
in 1998 and for the first quarter of 1999.

 Debt

   As of May 31, 1999, Lyondell had outstanding consolidated debt of $6.3
billion and equity of $1.2 billion. Substantially all of the debt was incurred
in July 1998 under the credit facility for the purpose of acquiring Lyondell
Worldwide or was assumed as part of the acquisition.

                                       60
<PAGE>

   In May 1999, Lyondell completed a partial refinancing of the debt under its
credit facility. The refinancing reduced consolidated debt by approximately
$630 million and eliminated substantially all debt maturities through year end
2000 by refinancing longer-term debt. The refinancing consisted of:

  . the issuance of the outstanding notes for gross proceeds of $2.4 billion;

  . the borrowing of an additional $1 billion under two new term loans under
    the credit facility; and

  . the issuance of 40.25 million shares of Lyondell common stock for gross
    proceeds of $765 million.

   In addition, as of May 31, 1999, Equistar, LYONDELL-CITGO Refining and
Lyondell Methanol had, in the aggregate, outstanding debt of approximately $3.1
billion and equity of approximately $4.5 billion. The ability of the joint
ventures to distribute cash to Lyondell is reduced by their respective debt
service obligations. Furthermore, a default under some joint venture debt
agreements would constitute a cross-default under Lyondell's credit facility.
Following repayment at maturity of Equistar's 10% Notes due June 1, 1999,
Lyondell currently remains liable on approximately $563 million of debt for
which primary responsibility was assumed by Equistar in connection with its
formation. See "Description of Other Indebtedness--Joint Venture Debt" for a
description of the debt of the joint ventures.

   To reduce its debt, Lyondell is looking to:

  . the cash flow of its businesses;

  . potential joint ventures involving strategic assets;

  . new equity capital;

  . working capital initiatives;

  . potential asset sales;

  . refinancing programs; and

  . other cash generating opportunities.

   Lyondell continues to believe that repositioning its balance sheet to
achieve an investment grade rating over time is an important objective. The
ability of Lyondell to:

  . meet its debt obligations;

  . finance its capital expenditure needs;

  . maintain its dividend rate; and

  . comply with the covenants and financial requirements in the credit
    facility

will generally depend on the future performance of Lyondell and the
availability and terms of additional financing or alternative means to repay
and refinance bank debt. These factors, in turn, are affected by relevant
prevailing economic, competitive and market conditions and other factors beyond
Lyondell's control. The breach of any of the covenants or financial
requirements in the credit facility could result in a default, which would
permit the lenders to declare the loans immediately payable and to terminate
future lending commitments. A default under the credit facility would also
result in an acceleration of the maturity of the new notes.

   Lyondell believes that cash balances, cash generated from operating
activities, and funds from financing activities and lines of credit will be
adequate to meet anticipated future cash requirements for scheduled debt
repayments, necessary capital expenditures and dividends. See "Risk Factors."

   Under Internal Revenue Code Sections 338 (g) and (h)(10), Lyondell and the
former majority stockholder of Lyondell Worldwide agreed to elect to step-up
the United States tax bases of Lyondell Worldwide's net assets. This will
result in significant increased depreciation and amortization with resulting
United States tax savings. The total value of these savings is expected to be
between $800 million and $1 billion over time.

                                       61
<PAGE>

                              Business of Lyondell

   Our annual report on Form 10-K for the year ended December 31, 1998 contains
a complete description of our businesses. Described below is a discussion of
our strategy for the following business segments:

  . intermediate chemicals and derivatives;

  . petrochemicals and polymers;

  . refining; and

  . methanol.

Also included is a description of the business of Lyondell Worldwide and
Lyondell Nederland, the guarantors of the new notes.

                          Business Segment Strategies

Intermediate Chemicals and Derivatives (Lyondell Worldwide)

 PO and its Derivatives

   Lyondell intends to maintain its leading market positions in its major
products. It intends to be a major participant in the global growth of PO,
urethanes and performance chemicals, building from its strengths in the areas
of:

  . technology;

  . manufacturing;

  . marketing; and

  . access to raw materials.

   Over the past 25 years, the annual global industry growth rate for PO and
its derivatives has averaged approximately 5%. Lyondell expects similar growth
to continue into the future. Global demand for PO was estimated at
approximately 8.7 billion pounds in 1998. Approximately 90% of that volume was
consumed in the manufacture of three families of PO derivatives products:
polyols, propylene glycol and propylene glycol ethers. The remainder was
consumed in the manufacture of a growing segment of performance-based products,
as well as butanediol and its derivatives. Lyondell intends to increase both
its overall production of PO and its production of PO derivatives while
continuing its participation in the PO merchant market, an important source of
revenue and profit for Lyondell.

   Lyondell is a major participant in the global urethanes chemicals market
through its production of polyols and TDI. Lyondell's strategy is to grow its
urethanes business using its proprietary Impact(TM) polyols processing
technology first introduced in 1995. This technology offers significant cost
savings in the production of conventional polyols products. It is also key to
the development of new, superior quality products for markets such as footwear,
carpet backing and spandex. To date, Lyondell has been granted 66 patents and
has over 34 patents pending for this technology. Lyondell plans to retrofit
most of its polyols production facilities to utilize Impact(TM) technology over
the next five years.

   Lyondell has the only PO-based processing route to butanediol. This
efficient proprietary technology provides Lyondell with a competitive advantage
in the rapidly expanding markets for butanediol and its derivatives. Butanediol
and its derivatives represent a global market growing at 7% per year and
provide access to markets such as:

  . pharmaceuticals;

  . personal care products;

                                       62
<PAGE>

  . fibers; and

  . high performance coatings.

   The co-products produced from Lyondell's two PO processes are TBA and
styrene monomer. Lyondell's strategy is to maximize earnings contribution from
these products.

 Cost Savings

   In late 1997, Lyondell Worldwide initiated a restructuring program designed
to simplify its organization, streamline operations and reduce costs. Lyondell
expects to achieve these cost savings by the end of 1999. Lyondell's management
believes that it will be able to realize additional cost savings through:

  . overhead consolidation;

  . manufacturing and purchasing efficiencies;

  . reduced transportation costs; and

  . raw materials integration with Equistar.

Petrochemicals and Polymers (Equistar)

   Equistar intends to:

  . maximize its integration opportunities with Lyondell;

  . increase its production and sales of higher value products; and

  . continue its ongoing cost reduction activities.

   The formation of Equistar provided significant integration opportunities for
Lyondell's ethylene production. Following the addition of the Occidental assets
to Equistar in May 1998, Equistar currently consumes or sells approximately 75%
of its ethylene production to downstream derivatives facilities owned by
Equistar or one of its partners, which has the effect of reducing earnings
volatility.

   The creation and subsequent expansion of Equistar were driven by the
opportunity to reduce costs significantly and realize revenue enhancements that
were not possible for the Equistar partners on a stand-alone basis. Equistar
intends to reduce costs by:

  . optimizing its processing units for improved operating efficiency and
    increased processing rates;

  . maximizing the value of its raw materials flexibility and ethylene and
    polyethylene co-products production;

  . lowering distribution costs through volume leverage; and

  . reducing raw materials and other procurement costs.

Equistar expects to achieve significant cost savings by the end of the year
2000.

   Equistar is focused on capital projects designed to lower its operating
costs. It is also currently undertaking a market strategy of expanding its
value-added product lines, including:

  . high and medium molecular weight high density polyethylene film resins;

  . value and specialty injection molding resins; and

  . wire and cable resins.

                                       63
<PAGE>

   These capacity expansions are intended to support Equistar's expected
increase in production and sales volumes for these products.

 Petrochemicals

   Equistar's business strategy for its petrochemicals business is to derive
maximum value from its internal integration, as well as integration with
Lyondell, and to improve its low cost operations. Management of Lyondell
intends to use Equistar's production of propylene, ethylene, benzene and
methanol as key raw materials for Lyondell's intermediate chemicals and
derivatives business. Equistar will continue to pursue joint ventures as the
preferred method to add ethylene and polyethylene production capacity when
needed and will aggressively pursue research on alternative ethylene and
polyethylene raw material technology to reduce the costs of raw materials. In
addition, Equistar intends to improve its low cost operations by:

  . increasing its ability to use low cost raw materials;

  . maximizing ethylene and polyethylene co-product production; and

  . reducing raw materials and product delivery costs.

 Polymers

   Equistar will promote growth in polymers by targeting value-added markets
that provide attractive margins and above average growth rates. In late 1998
Equistar completed a 125 million-pound expansion at its Victoria, Texas
facility. A 480 million-pound expansion of its Matagorda, Texas facility is
expected to be completed in the third quarter of 1999. These expansions will
provide necessary capacity for the high and medium molecular weight high
density polyethylene market. These are areas in which Equistar has a leading
market position and for which demand is growing at 2 to 3% above average
polyethylene growth.

   Equistar continues to pursue technological innovation for its polymers
segment to create new polymers products. With the recent addition of the
Occidental assets to Equistar in May 1998, Lyondell benefits from access to
Occidental's processing technologies. To date, Equistar has received eight
fundamental patents and has nine patents pending for its single-site catalyst
technology. This technology is expected to lead to the development of higher
value polymers products with enhanced performance characteristics, including
improved puncture resistance, impact strength and clarity.

Refining (LYONDELL-CITGO Refining)

   LYONDELL-CITGO Refining's business strategy focuses on improving its ability
to process low cost, extra heavy crude oil, thereby enabling LYONDELL-CITGO
Refining to capitalize on the favorable economics of its crude supply agreement
and to increase profitability with little additional fixed cost. LYONDELL-CITGO
Refining has already demonstrated its ability to exceed the refinery's designed
processing rate of 230,000 barrels per day of extra heavy crude oil. Peak
processing rates of approximately 270,000 barrels per day have been achieved.
LYONDELL-CITGO Refining is developing a plan to increase the refinery's
capability to process up to 300,000 barrels per day with modest capital
investment and minimal changes to the refinery's fixed cost structure. This
capability, when coupled with LYONDELL-CITGO Refining's advantageous formula-
priced long-term crude supply agreement with PDVSA, helps to stabilize earnings
and cash flow. In addition to increasing processing capacity, LYONDELL-CITGO
Refining is improving its profitability by increasing its yield of high value
products produced per barrel of crude processed. See "Management's Discussion
and Analysis of Financial Condition and Results of Operations--Results of
Operations--First Quarter of 1999 compared to Fourth Quarter 1998--Refining."

   Lyondell seeks to position the LYONDELL-CITGO Refining refinery in the top
quartile of the industry in cost structure. LYONDELL-CITGO Refining continues
to improve its low cost operations through:

  . aggressive energy conservation programs;

  . improving its yields to increase operational efficiency; and

  . improving equipment reliability to maximize processing rates and minimize
    downtime.

                                       64
<PAGE>

   LYONDELL-CITGO Refining has reduced its number of employees in connection
with its new labor agreement and will outsource non-core activities.

Methanol (Lyondell Methanol)

   Lyondell Methanol's strategy is to achieve efficient, low cost operations.
Lyondell Methanol intends to:

  . reduce raw materials costs;

  . increase contract sales;

  . implement cost reduction technologies and techniques;

  . maximize the chemical efficiency of its processes through research into
    alternative raw materials; and

  . achieve competitive raw material supply advantages with Lyondell's other
    businesses.

   You are cautioned that Lyondell's ability to undertake and fund the
business strategies described above will be affected by a variety of factors,
some of which are beyond Lyondell's control. See "Forward-Looking Information"
on page 29.

             Business of Lyondell Worldwide and Lyondell Nederland

Lyondell Worldwide

   Lyondell Chemical Worldwide, Inc., a wholly owned subsidiary of Lyondell,
is a Delaware corporation formerly known as ARCO Chemical Company before its
acquisition by Lyondell in 1998. Lyondell Worldwide operates Lyondell's
intermediate chemicals and derivatives business. In 1998, Lyondell Worldwide
had total pro forma revenues of $3.6 billion. At December 31, 1998, Lyondell
Worldwide had total tangible assets of $5.6 billion and long-term debt of $6.8
billion, including intercompany loans of $6.1 billion. Lyondell Worldwide is a
guarantor of the new notes and a guarantor under the credit facility. For
further description of the business of Lyondell Worldwide, see "Prospectus
Summary--Intermediate Chemicals and Derivatives (Lyondell Worldwide)" and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations--Intermediate Chemicals and Derivatives (Lyondell Worldwide)."

Lyondell Nederland

   Lyondell Chemical Nederland, Ltd., a wholly owned subsidiary of Lyondell
Worldwide, is a Delaware corporation which operates a chemical production
facility in Rotterdam, The Netherlands. In 1998, Lyondell Nederland had total
revenues of $631 million. At December 31, 1998, Lyondell Nederland had total
tangible assets of $1.4 billion and long-term debt, principally intercompany
loans, of $270 million. Lyondell Nederland is a guarantor of the new notes and
a guarantor under the credit facility.

                                      65
<PAGE>

                                    Products

   The following charts show the products produced by Lyondell, Equistar and
LYONDELL-CITGO Refining, including:

  . the location of manufacturing facilities;

  . production capacity;

  . major competitors; and

  . primary uses.

   Unless otherwise specified, in the table below, production capacity was
calculated by estimating the number of days in a typical year that a production
unit of a plant is expected to operate, after allowing for downtime for regular
maintenance, and multiplying that number by an amount equal to the unit's
optimal daily output based on the current design raw material mix. Because
production capacity of a production unit is an estimated amount, the actual
production volumes may be more or less than the production capacity listed.
Production capacity shown for Equistar is 100% of the production capacity of
Equistar, of which Lyondell owns a 41% interest. Production capacity shown for
LYONDELL-CITGO Refining is 100% of the production capacity of LYONDELL-CITGO
Refining, of which Lyondell owns a 58.75% interest.

                  LYONDELL PRODUCTS AND PRODUCTION FACILITIES
<TABLE>
- ----------------------------------------------------------------------------------------------------------------
<CAPTION>
                           Production                                                                 Major
     Key Products           Capacity       Primary Uses             Where Produced                 Competitors
- ----------------------------------------------------------------------------------------------------------------
<S>                      <C>            <C>                 <C>                                   <C>
Propylene Oxide (PO)     3.85 billion   PO is a key              Channelview, Texas               Dow Chemical
                         pounds per     component of             Bayport, Texas                   Shell Chemical
                         year           polyols, propylene       Fos-sur-Mer, France Rotterdam,   Huntsman
                                        glycol, propylene        The Netherlands Chiba, Japan
                                        glycol ethers and
                                        butanediol.
- ----------------------------------------------------------------------------------------------------------------
Polyols                  1.47 billion   Polyols are used to      Institute, West Virginia         Dow Chemical
                         pounds per     produce flexible         South Charleston, West Virginia  Bayer AG
                         year           foam for automotive      Channelview, Texas               BASF AG
                                        seating and home         Fos-sur-Mer, France              Shell Chemical
                                        furnishings,             Rieme, Belgium
                                        coatings,                Anyer, Indonesia
                                        adhesives, sealants      Kaohsiung, Taiwan
                                        and elastomers.
- ----------------------------------------------------------------------------------------------------------------
Toluene Diisocyanate     250 million    TDI is combined          Lake Charles, Louisiana          Bayer AG
 (TDI)                   pounds per     with polyols to          Pont de Claix, France            BASF AG
                         year/1/        produce flexible         Lille, France
                                        foam for automotive
                                        seating and home
                                        furnishings,
                                        coatings,
                                        adhesives, sealants
                                        and elastomers.
- ----------------------------------------------------------------------------------------------------------------
Propylene Glycol         960 million    Propylene glycol is      Bayport, Texas                   Dow Chemical
                         pounds per     used to produce          Fos-sur-Mer, France
                         year           unsaturated              Rotterdam, The Netherlands
                                        polyester resins
                                        for bathroom
                                        fixtures and boat
                                        hulls; lower
                                        toxicity
                                        antifreeze,
                                        coolants and
                                        aircraft deicers;
                                        and cosmetics and
                                        cleaners.
- ----------------------------------------------------------------------------------------------------------------
Propylene Glycol Ethers  300 million    Propylene glycol         Bayport, Texas                   Dow Chemical
                         pounds per     ethers are used as       Rotterdam, The Netherlands
                         year           a lower toxicity
                                        solvent for paints,
                                        coatings and
                                        cleaners.
- ----------------------------------------------------------------------------------------------------------------
Butanediol               120 million    Butanediol is used       Channelview, Texas               BASF AG
                         pounds per     in the manufacture                                        ISP
                         year           of engineering                                            SISAS
                                        resins, films,                                            DuPont
                                        personal care
                                        products,
                                        pharmaceuticals,
                                        coatings, solvents
                                        and adhesives.
- ----------------------------------------------------------------------------------------------------------------
Tertiary Butyl           58,500 barrels TBA is a key             Bayport, Texas                   Saudi Basic
 Alcohol (TBA)--  fuel   per day        component of MTBE.       Fos-sur-Mer, France               Industries
 oxygenates: Methyl                     MTBE is a gasoline       Rotterdam, The Netherlands       Corp.  (SABIC)
 tertiary butyl ether                   component for                                             Huntsman
 (MTBE)                                 reducing emissions                                        Shell Chemical
                                        in reformulated                                           Exxon
                                        gasolines and
                                        enhancing octane
                                        value.
</TABLE>


                                       66
<PAGE>

                                 Petrochemicals
<TABLE>
- ---------------------------------------------------------------------------------------
<CAPTION>
                    Production                                               Major
  Key Products       Capacity       Primary Uses       Where Produced     Competitors
- ---------------------------------------------------------------------------------------
<S>               <C>            <C>                 <C>                 <C>
Ethylene Glycol   1.0 billion    Ethylene glycol is  Beaumont, Texas     Union Carbide
                  pounds per     used to produce     Pasadena, Texas     Shell Chemical
                  year           polyester fibers                        Huntsman
                                 and film, resin,
                                 heat transfer
                                 fluids, paint and
                                 automobile
                                 antifreeze.
- ---------------------------------------------------------------------------------------
Ethylene Oxide    1.1 billion    Ethylene oxide is   Beaumont, Texas     Union Carbide
 and Equivalents  pounds per     used to produce     Pasadena, Texas     Shell Chemical
                  year as        surfactants,                            Huntsman
                  Ethylene Oxide industrial
                  equivalents;   cleaners,
                  400 million    cosmetics,
                  pounds per     emulsifiers, paint,
                  year as pure   heat transfer
                  Ethylene Oxide fluids and ethylene
                                 glycol (polyester
                                 fibers and film,
                                 polyethylene
                                 terephthalate resin
                                 and antifreeze).
- ---------------------------------------------------------------------------------------
Ethylene Oxide    225 million    Ethylene oxide      Pasadena, Texas     Dow Chemical
 Derivatives      pounds per     derivatives are                         Union Carbide
                  year           used to produce
                                 paint and coatings,
                                 polishes, solvents
                                 and chemical
                                 intermediates.
- ---------------------------------------------------------------------------------------
</TABLE>
                                    Polymers
<TABLE>
- --------------------------------------------------------------------------------
<S>                       <C>            <C>                  <C>                 <C>
High Density              3.4 billion    HDPE is used to      Clinton, Iowa       Exxon
 Polyethylene Alathon(R)  pounds/2/ per  manufacture grocery, Chocolate Bayou,    Phillips
 Petrothene(R)            year           merchandise and      Texas               Chemical
                                         trash bags; food     LaPorte, Texas      Solvay
                                         containers for items Matagorda County,   Polymers
                                         from frozen desserts Texas
                                         to margarine;        Port Arthur, Texas
                                         plastic caps and     Victoria, Texas
                                         closures; liners for
                                         boxes of cereal and
                                         crackers; plastic
                                         drink cups and toys;
                                         dairy crates; bread
                                         trays and pails for
                                         items from paint to
                                         fresh fruits and
                                         vegetables; safety
                                         equipment such as
                                         hard hats; house
                                         wrap for insulation;
                                         bottles for
                                         household/industrial
                                         chemicals and motor
                                         oil;
                                         milk/water/juice
                                         bottles; and large
                                         (rotomolded) tanks
                                         for storing liquids
                                         like agricultural
                                         and lawn care
                                         chemicals.
- ------------------------------------------------------------------------------------------------
Low Density Polyethylene  1.7 billion    LDPE is used to      Clinton, Iowa       Dow Chemical
 Petrothene(R)            pounds per     manufacture food     LaPorte, Texas      Chevron
 Acrythene(R)             year           packaging films;     Morris, Illinois    Westlake Group
 Ultrathene(R)                           plastic bottles for  Pasadena, Texas
                                         packaging food and   Port Arthur, Texas
                                         personal care items;
                                         dry cleaning bags;
                                         ice bags; pallet
                                         shrink wrap; heavy-
                                         duty bags for mulch
                                         and potting soil;
                                         boil-in-bag bags;
                                         coatings on flexible
                                         packaging products;
                                         and coatings on
                                         paper board such as
                                         milk cartons.
                                         Specialized forms of
                                         LDPE are Ethyl
                                         Methyl Acrylate,
                                         which provides
                                         adhesion in a
                                         variety of
                                         applications, and
                                         Ethylene Vinyl
                                         Acetate, which is
                                         used in foamed
                                         sheets, bag-in-box
                                         bags, vacuum cleaner
                                         hoses, medical
                                         tubing, clear sheet
                                         protectors and
                                         flexible binders.
</TABLE>


                                       67
<PAGE>

                                    Polymers
<TABLE>
- ---------------------------------------------------------------------------------------------
<CAPTION>
                          Production                                               Major
     Key Products          Capacity       Primary Users      Where Produced     Competitors
- ---------------------------------------------------------------------------------------------
<S>                     <C>            <C>                 <C>                 <C>
Linear Low Density      1.1 billion    LLDPE is used to    LaPorte, Texas      Union Carbide
 Polyethylene           pounds per     manufacture garbage Morris, Illinois    Dow Chemical
 Petrothene(R)          year           and lawn-leaf bags;                     Exxon
                                       housewares; lids                        Mobil Chemical
                                       for coffee cans and
                                       margarine tubs; and
                                       large (rotomolded)
                                       toys like outdoor
                                       gym sets.
- ---------------------------------------------------------------------------------------------
Polypropylene           680 million    Polypropylene is    Morris, Illinois    Montell
 KromaLon(R)            pounds per     used to manufacture Pasadena, Texas     FINA
 Petrofil(R)            year           fibers for carpets,                     Huntsman
 Petrothene(R)                         rugs and                                Amoco
 KromaLux(R)                           upholstery;                             Chemicals
 KromaTex(R)                           housewares;
 Flexathene(R)                         automotive battery
                                       cases; automotive
                                       fascia, running
                                       boards and bumpers;
                                       grid-type flooring
                                       for sports
                                       facilities; fishing
                                       tackle boxes; and
                                       bottle caps and
                                       closures.
</TABLE>


     Equistar's research facilities are located in Cincinnati, Ohio; Matagorda,
Texas and Plano, Texas.
- --------
1  Does not include refinery grade material or production from the product
   flexibility unit at Equistar's Channelview, Texas facility, which can
   convert ethylene and other light petrochemicals into propylene and has a
   current production capacity of 1.0 billion pounds per year of propylene.

2  Equistar increased its HDPE production capacity by approximately 125 million
   pounds in 1998. A 480 million pound HDPE resin expansion project at the
   Matagorda, Texas facility has a targeted start-up in the third quarter of
   1999. The idling of the Port Arthur, Texas facility effective March 31, 1999
   has resulted in a decrease in production capacity of 300 million pounds per
   year.

                                       68
<PAGE>

           LYONDELL-CITGO REFINING PRODUCTS AND PRODUCTION FACILITIES
<TABLE>
- --------------------------------------------------------------------------------------
<CAPTION>
     Key Products      Production Capacity        Primary Uses          Where Produced
- --------------------------------------------------------------------------------------
  <S>                 <C>                    <C>                    <C>
  Gasoline/1/         120,000 barrels per    Automotive fuel.           Houston, Texas
                      day
- --------------------------------------------------------------------------------------
  Diesel/1/           75,000 barrels per     Fuel for diesel cars       Houston, Texas
   (#2 Distillate)    day                    and trucks.
- --------------------------------------------------------------------------------------
  Jet Fuel/1/         22,000 barrels per     Aviation fuel.             Houston, Texas
                      day
- --------------------------------------------------------------------------------------
  Benzene/2/          50 million gallons     Nylon for clothing         Houston, Texas
                      per year               and consumer items;
                                             polystyrene for
                                             insulation, packaging
                                             and drink cups.
- --------------------------------------------------------------------------------------
  Toluene/3/          37 million gallons     Gasoline component         Houston, Texas
                      per year               and chemical raw
                                             material for
                                             producing benzene.
- --------------------------------------------------------------------------------------
  Paraxylene/3/       400 million pounds     Polyester fibers for       Houston, Texas
                      per year               clothing and fabrics,
                                             soft drink bottles
                                             and films for audio
                                             and video tape.
- --------------------------------------------------------------------------------------
  Orthoxylene/3/      270 million pounds     Plasticizer in             Houston, Texas
                      per year               products such as
                                             rainwear, shower
                                             curtains, toys and
                                             auto upholstery and
                                             an intermediate in
                                             paints and
                                             fiberglass.
- --------------------------------------------------------------------------------------
  Lube Oils/1/        4,000 barrels per day  Automotive and             Houston, Texas
                                             industrial engine and
                                             lube oils, railroad
                                             engine additives and
                                             white oils for food-
                                             grade applications.
</TABLE>


- --------
1  Produced by LYONDELL-CITGO Refining and sold to CITGO.
2  Produced by LYONDELL-CITGO Refining and sold to Equistar.
3  Produced by LYONDELL-CITGO Refining and marketed for LYONDELL-CITGO Refining
   by Equistar.

                                       69
<PAGE>

                       Description of Other Indebtedness

Credit Facility

   In July 1998, Lyondell acquired all the outstanding shares of common stock
of Lyondell Worldwide for $6.5 billion, which included $5.6 billion for the
purchase of common stock and the assumption or refinancing of approximately
$870 million in debt, net of cash. Funding for the acquisition, the repayment
of some Lyondell and Lyondell Worldwide debt and related fees and expenses was
provided through the credit facility. In May 1999, the credit facility was
amended, two of the original term loans were repaid and two new term loans were
borrowed. The amended credit facility consists of a 5-year revolving credit
facility of up to $500 million to be used for general corporate purposes and
four separate term loans. No amounts to date have been funded under the
revolving credit facility. As of May 31, 1999, the principal amounts
outstanding, interest rates and maturity dates of the term loans were as
follows:

<TABLE>
<CAPTION>
                     Principal
                       Amount
     Term Loan      Outstanding    Interest Rate             Maturity
     ---------      ------------ -----------------           --------
<S>                 <C>          <C>               <C>
Term loan A........ $1.1 billion LIBOR plus 3.25%         June 30, 2003
                                                     (amortized over 5 years)

Term loan B........ $1.2 billion LIBOR plus 3.75%         June 30, 2005
                                                     (amortized over 7 years)

Term loan E........ $850 million LIBOR plus 3.875%        June 30, 2006
                                                     (amortized over 7 years)

Term loan F........ $150 million  LIBOR plus 3.5%       December 31, 2003
                                                   (amortized over 4 1/2 years)
</TABLE>

 Covenants

   The amended credit facility requires Lyondell to issue, in one or more
transactions, not less than $470 million of additional subordinated notes (or
more junior securities) by June 30, 2002. This requirement will be reduced by
$2 for every $1 of common stock issued in the future and will be eliminated if
Lyondell achieves either:

  . a total debt to adjusted EBITDA ratio, as defined in the credit facility,
    of 3.0 to 1.0; or

  . a rating for its senior unsecured debt of BB by Standard & Poor's and Ba2
    by Moody's.

   Under the covenant provisions of the credit facility, as amended, Lyondell
has agreed to, among other things:

  . maintain specified financial ratios and consolidated net worth;

  . not make some distributions with respect to Lyondell's capital stock;

  . not make some investments;

  . not allow its subsidiaries to incur some types and amounts of debt; and

  . use its best efforts to maintain specified ownership interests in some of
    its existing joint ventures and to ensure that some of its existing joint
    ventures maintain specified capital expenditure and debt levels and cash
    distribution policies.

Lyondell believes that it is in compliance with each of its financial covenants
as of May 31, 1999.

                                       70
<PAGE>

 Security

   The credit facility is secured by:

  . personal property of Lyondell and Lyondell Worldwide;

  . rights to distributions from some existing joint ventures;

  . a pledge of the stock of substantially all domestic subsidiaries directly
    owned by Lyondell and Lyondell Worldwide;

  . a pledge of 65% of the stock of foreign subsidiaries directly owned by
    Lyondell and Lyondell Worldwide; and

  . the property, plant and equipment for some of Lyondell's and Lyondell
    Worldwide's facilities located in Texas and Louisiana.

Lyondell Worldwide (ARCO Chemical) Debentures

   Lyondell Worldwide has the following outstanding debentures:

  . $200 million of 9.90% debentures due 2000;

  . $100 million of 9.375% debentures due 2005;

  . $100 million of 10.25% debentures due 2010; and

  . $224 million of 9.80% debentures due 2020.

The debentures are secured by liens on Lyondell Worldwide's manufacturing
plants located in Texas and Louisiana that are equal and ratable with the liens
on those assets under the Senior Secured Notes and the loans under the credit
facility. The indentures for these debentures contain customary covenant
provisions pertaining to, among other things, limitations on liens and sale and
leaseback transactions.

Joint Venture Debt

 Equistar Debt

   In February 1999, Equistar completed a $900 million private placement of 5-
and 10-year notes, the proceeds of which were used to refinance existing
Equistar debt. Proceeds were used to:

  . repay in its entirety Equistar's $205 million outstanding capital lease
    obligation relating to its Corpus Christi, Texas facility;

  . retire at maturity $150 million aggregate principal amount of 10.00%
    Notes due June 1, 1999, for which Lyondell was a co-obligor;

  . repay approximately $152 million remaining outstanding under Equistar's
    $500 million credit agreement, which was subsequently terminated; and

  . refinance a portion of the outstanding borrowings under its $1.25 billion
    5-year working capital facility.

                                       71
<PAGE>

   As of May 31, 1999, the principal amounts outstanding, interest rates and
maturity dates of the Equistar debt obligations were as follows:

<TABLE>
<CAPTION>
                          Principal
                            Amount
          Debt           Outstanding          Interest Rate              Maturity
          ----           ------------ ----------------------------  ------------------
<S>                      <C>          <C>                           <C>
Notes and medium-term
 notes(a)............... $713 million Fixed rates ranging from      Various dates from
                                      6.5% to 11.3%; weighted       June 1999 to
                                      average equal to 8.6%         February 2026
5-year revolving credit
 facility............... $750 million LIBOR plus 0.5%
Notes due 2004.......... $300 million 8.5%                          February 2004
Notes due 2009.......... $600 million 8.75%                         February 2009
</TABLE>
- --------
(a) Following the repayment at maturity of Equistar's 10% Notes due June 1,
    1999, Lyondell currently remains liable on $563 million of debt assumed by
    Equistar in connection with its formation, though Equistar has agreed to be
    primarily liable for this debt.

 Equistar Covenants

   Under the covenant provisions of its 5-year revolving credit facility,
Equistar has agreed, among other things, to:

  . maintain specified financial ratios;

  . not create specified liens on its property or assets;

  . not enter into some sale and leaseback transactions;

  . not allow its subsidiaries to incur some types of debt or issue some
    types of preferred stock;

  . not use the proceeds of its credit facility for some purposes;

  . not change its or its subsidiaries' line of business; and

  . not enter into agreements restricting the ability of some of its
    subsidiaries to pay distributions or dividends.

   Equistar believes that it is in compliance with each of its financial
covenants as of May 31, 1999.

   The ability of Equistar to meet its debt service obligations and to comply
with the covenants and financial requirements in its credit facility will
largely depend on the future performance of Equistar and the availability of
additional financing to repay and refinance bank debt. These obligations are
affected by prevailing economic, market and competitive conditions and other
factors beyond Equistar's control. The breach by Equistar of any of the
covenants or financial requirements in its credit facility could result in a
default, which would permit the lenders to declare the loans immediately
payable and to terminate future lending commitments.

 LYONDELL-CITGO Refining Debt

   As of May 31, 1999, the principal amounts outstanding, interest rates and
maturity dates of the LYONDELL-CITGO Refining debt obligations were as follows:

<TABLE>
<CAPTION>
                           Principal
                             Amount
          Debt            Outstanding          Interest Rate            Maturity
          ----            ------------ ----------------------------  --------------
<S>                       <C>          <C>                           <C>
Construction loan
 payable to bank........  $450 million LIBOR plus 0.55%              May 5, 2000
Loans payable to
 Lyondell...............  $255 million LIBOR plus basis points       July 1, 2003
                                       consistent with a BBB+
                                       issuer
Loans payable to CITGO..  $ 53 million LIBOR plus basis points       July 1, 2003
                                       consistent with a BBB+
                                       issuer
$70 million revolving
 credit agreement.......  $ 15 million LIBOR plus 0.55%              April 28, 2000
</TABLE>

                                       72
<PAGE>

   In late 1998, LYONDELL-CITGO Refining postponed a planned debt refinancing.
The postponement was due to unfavorable bond market conditions and political
change in Venezuela associated with the recent presidential elections. The
proceeds of the refinancing would have been used to repay third-party
construction loans and subordinated loans made to LYONDELL-CITGO Refining by
Lyondell and CITGO, with any remaining cash distributed to the partners.
LYONDELL-CITGO Refining intends to pursue the refinancing as soon as practical.

 LYONDELL-CITGO Refining Covenants

   Under the covenant provisions of its credit agreements, LYONDELL-CITGO
Refining has agreed, among other things, to:

  . maintain specified financial ratios;

  . not enter into some transactions with affiliates;

  . not make some investments;

  . not create some liens;

  . not make some distributions or repurchases on its capital stock;

  . not allow its subsidiaries to incur some types and amounts of debt;

  . not enter into some asset sales; and

  . not take some specified actions with respect to its crude supply
    agreement, products purchase agreement or some of LYONDELL-CITGO
    Refining's formation documents.

LYONDELL-CITGO Refining believes that it is in compliance with each of its
financial covenants as of May 31, 1999.

   The ability of LYONDELL-CITGO Refining to meet its debt service obligations
and to comply with the covenants and financial requirements in its credit
agreement will largely depend on the future performance of LYONDELL-CITGO
Refining and the availability of additional financing to repay and refinance
bank debt. These obligations are affected by prevailing economic, market and
competitive conditions and other factors beyond LYONDELL-CITGO Refining's
control. The breach by LYONDELL-CITGO Refining of any of the covenants or
financial requirements in its credit agreement could result in a default, which
would permit the lenders to declare the loans immediately payable and to
terminate future lending commitments.

                            Description of New Notes

   We have summarized below the material provisions of the new notes and the
indentures. This summary does not restate these documents in their entirety.
The indentures, and not this summary, govern your rights as holders of the new
notes. Copies of the indentures and the security documents are available as
described below under "--Where You Can Find More Information."

   As used only in this "Description of New Notes," the terms "Lyondell", "us",
or "we" refer to Lyondell Chemical Company and not to any of its subsidiaries.
For definitions of some of the capitalized terms used in the following summary,
see "--Definitions."

Brief Description of the New Notes

   The new notes will be issued under three separate indentures among Lyondell,
Lyondell Worldwide and Lyondell Nederland, as guarantors, and The Bank of New
York, as trustee. The same indentures also govern the outstanding notes. The
terms of the new notes include those stated in the indentures and those made
part of the indentures by reference to the Trust Indenture Act of 1939, as
amended. The new notes are subject to all

                                       73
<PAGE>

these terms, and holders of new notes are referred to the indentures and the
Trust Indenture Act for a statement of these terms.

 Senior Secured Notes.

  The new Senior Secured Notes:

  . are general secured obligations of Lyondell

  . rank equally in right of payment with the outstanding Senior Secured
    Notes

  . rank equally with all our existing and future unsecured senior debt and
    rank senior to this debt to the extent of the value of the collateral

  . effectively rank junior to all liabilities of our joint ventures and all
    liabilities of our subsidiaries that are not guarantors

  . are secured equally and ratably with debt under our credit facility and
    some debt of Lyondell Worldwide

  . are unconditionally guaranteed by our subsidiaries Lyondell Worldwide and
    Lyondell Nederland

  . are registered under the Securities Act and freely transferable

  . have substantially the same terms as the outstanding Senior Secured
    Notes, except that they do not have registration rights.

   At May 31, 1999:

  . approximately $5.8 billion in principal amount of outstanding
    unsubordinated Indebtedness of Lyondell, Lyondell Worldwide and Lyondell
    Nederland was secured, including the Senior Secured Notes and
    Indebtedness under the Existing Credit Facility;

  . approximately $725 million of outstanding Indebtedness of Lyondell,
    Lyondell Worldwide and Lyondell Nederland was pari passu with the Senior
    Secured Notes and unsecured and ranked effectively junior to the Senior
    Secured Notes to the extent of the value of the assets securing the
    Senior Secured Notes; of this Indebtedness, $713 million is Indebtedness
    of Equistar for which Lyondell remains contingently liable and the
    balance is primarily undrawn letters of credit;

  . the $500 million in principal amount of Senior Subordinated Notes, would
    have been, by their terms, subordinated to the Senior Secured Notes.

 Senior Subordinated Notes.

  The new Senior Subordinated Notes:

  . are general unsecured obligations of Lyondell

  . rank equally in right of payment with the outstanding Senior Subordinated
    Notes

  . rank junior to all our existing and future unsubordinated debt, including
    the Senior Secured Notes, debt under our credit facility and some debt of
    Lyondell Worldwide

  . effectively rank junior to all liabilities of our joint ventures and all
    liabilities of our subsidiaries that are not guarantors

  . are unconditionally guaranteed by our subsidiaries Lyondell Worldwide and
    Lyondell Nederland

  . are registered under the Securities Act and freely transferable

  . have substantially the same terms as the outstanding Senior Subordinated
    Notes, except that they do not have registration rights.

                                       74
<PAGE>

   At May 31, 1999, approximately $5.8 billion in principal amount of Senior
Indebtedness of Lyondell, Lyondell Worldwide and Lyondell Nederland was
outstanding (including Indebtedness under the Existing Credit Facility and the
Senior Secured Notes and excluding $713 million of Equistar debt for which
Lyondell is contingently liable).

   The Guarantees. The new notes are guaranteed by our subsidiaries Lyondell
Worldwide and Lyondell Nederland.

  The guarantees of the Senior Secured Notes:

  . are general obligations of each guarantor

  . rank equally with all existing and future unsubordinated debt of each
    guarantor

  The guarantees of the Senior Subordinated Notes:

  . are general obligations of each guarantor

  . rank junior to all existing and future unsubordinated debt of each
    guarantor, including the guarantees of the Senior Secured Notes

   Structural Subordination. Many of Lyondell's operations are conducted
through its Subsidiaries and Joint Ventures. For this reason, Lyondell is
dependent upon the cash flow of its Subsidiaries and Joint Ventures to meet its
obligations, including Lyondell's obligations under the new notes. The new
notes will be effectively subordinated to all outstanding Indebtedness and
other liabilities and commitments, including trade payables and operating lease
obligations, of Lyondell's Subsidiaries and Joint Ventures, except to the
extent they are Subsidiary Guarantors. At May 31, 1999, the new notes would
have been effectively subordinated to approximately $4.0 billion of outstanding
liabilities of Lyondell's Joint Ventures, including trade payables. See "Risk
Factors--Most of the covenants under the new notes do not apply to Lyondell's
joint ventures; our joint ventures could increase their debt leverage, default
on their debt obligations or take other action limiting their ability to pay
distributions to us for which you will have no recourse."

   Upon the liquidation, reorganization or insolvency of any of Lyondell's
Subsidiaries or Joint Ventures that are not Subsidiary Guarantors, Lyondell's
rights to receive assets of these companies and the rights of holders of the
new notes to participate in those assets will be effectively subordinated to
the claims of creditors and preferred stockholders of the Subsidiary or Joint
Venture. However, in the event that Lyondell itself is recognized as a creditor
of the Subsidiary or Joint Venture, then Lyondell's claims would not be
subordinate to third party creditors and preferred stockholders, but would
still be subordinate to any lien or security interest in the assets of the
Subsidiary or Joint Venture and any Indebtedness of the Subsidiary or Joint
Venture senior to that held by Lyondell.

   Under some circumstances, Lyondell will be able to designate current or
future Subsidiaries as Unrestricted Subsidiaries. Unrestricted Subsidiaries and
Joint Ventures, so long as they are not Subsidiaries of Lyondell (and, if they
are Subsidiaries, at any time that they are designated as Unrestricted
Subsidiaries), will not be subject to many of the restrictive covenants
specified in the indentures.

Principal, Maturity And Interest

   Senior Secured Notes. The Series A Senior Secured Notes will be secured,
senior obligations of Lyondell initially limited in aggregate principal amount
to $900 million and will mature on May 1, 2007. The Series B Senior Secured
Notes will be secured, senior obligations of Lyondell initially limited in
aggregate principal amount to $1 billion and will mature on May 1, 2007.
Interest on the Series A Senior Secured Notes is 9 5/8% per annum. Interest on
the Series B Senior Secured Notes is 9 7/8% per annum. Interest on both the
Series A Senior Secured Notes and Series B Senior Secured Notes is payable
semi-annually in arrears on May 1 and November 1 of each year, beginning on
November 1, 1999, to holders of record on the immediately preceding April 15
and October 15, respectively. Interest on the Senior Secured Notes will accrue
from the most recent date to which interest has been paid or, if no interest
has been paid, from the date of issuance.

                                       75
<PAGE>

   Senior Subordinated Notes. The Senior Subordinated Notes will be unsecured
obligations of Lyondell initially limited in aggregate principal amount to $500
million and will mature on May 1, 2009. Interest on the Senior Subordinated
Notes is 10 7/8% per annum. Interest is payable semi-annually in arrears on May
1 and November 1 of each year, beginning on November 1, 1999, to holders of
record on the immediately preceding April 15 and October 15, respectively.
Interest on the Senior Subordinated Notes will accrue from the most recent date
to which interest has been paid or, if no interest has been paid, from the date
of issuance.

   Interest on the new notes will be computed on the basis of a 360-day year
comprised of twelve 30-day months. Principal of and premium, if any, and
interest and liquidated damages, if any, on the new notes will be payable at
the office or agency of Lyondell maintained for this purpose within The City
and The State of New York. Lyondell may opt to pay interest and liquidated
damages, if any, by check mailed to the holders of the new notes at their
respective addresses listed in the register of holders of the new notes. All
payments with respect to Global Notes, whose holders have given wire transfer
instructions on or before the relevant record date to the paying agent, will be
required to be made by wire transfer of immediately available funds to the
accounts specified by the holders. Until otherwise designated by Lyondell,
Lyondell's office or agency in New York will be the office of the relevant
Trustee maintained for this purpose. The new notes will initially be issued in
global form. In the event they are subsequently certificated, the new notes
will be issued in denominations of $1,000 and integral multiples of $1,000.

   Subject to the covenants described below under "--Restrictive Covenants,"
Lyondell may issue additional Series A Senior Secured Notes, additional Series
B Senior Secured Notes and additional Senior Subordinated Notes under the
respective indentures having substantially the same terms in all material
respects as the outstanding notes of each series, as the case may be. However,
the aggregate principal amount of Senior Secured Notes outstanding at any time
will not exceed $1.9 billion. Furthermore, before any issuance of additional
notes, Lyondell must deliver to the Trustee an opinion of counsel confirming
that the holders of the outstanding Series A Senior Secured Notes, Series B
Senior Secured Notes or Senior Subordinated Notes, as the case may be, will be
subject to federal income tax on the same amounts, in the same manner and at
the same times as would have been the case if the additional notes were not
issued. The outstanding Series A Senior Secured Notes, Series B Senior Secured
Notes and Senior Subordinated Notes and any additional Series A Senior Secured
Notes, Series B Senior Secured Notes or Senior Subordinated Notes, as the case
may be, would each be treated as a single class for all purposes under the
relevant indenture.

Security

   The Senior Secured Notes will be secured by a lien equally and ratably with
all Senior Indebtedness owing under the Existing Credit Facility (and, with
respect to some of Lyondell's manufacturing plants described below, equally and
ratably with Existing ARCO Chemical Debt as well) under the security agreements
and pledge agreements, as amended from time to time (collectively, the
"Security Documents"), between Lyondell or some of its Restricted Subsidiaries
and Morgan Guaranty Trust Company of New York, as collateral agent.

   The liens granted under the Security Documents constitute first-priority
liens, with some exceptions and permitted liens described in the documents, on
the following assets:

  . personal property of Lyondell and Lyondell Worldwide;

  . substantially all the stock of Lyondell's domestic subsidiaries directly
    owned by Lyondell or Lyondell Worldwide;

  . 65% of the stock of Lyondell's foreign subsidiaries directly owned by
    Lyondell or Lyondell Worldwide (other than the stock of some subsidiaries
    for which consent is required to permit a pledge to the extent this
    consent has not been obtained);

  . the rights of some of Lyondell's Joint Venture Subsidiaries to receive
    distributions from Joint Ventures in which they hold Equity Interests;
    and

                                       76
<PAGE>

  . mortgages on Lyondell Worldwide facilities located in Bayport, Texas,
    Channelview, Texas and Lake Charles, Louisiana (collectively and together
    with any other assets that may be pledged from time to time, the
    "Collateral").

   Holders of the Senior Secured Notes will be granted a lien equally and
ratably with any lien granted on additional assets to secure the holders of
Senior Indebtedness under the Existing Credit Facility subsequent to the
issuance of the new notes.

   Any or all liens for the benefit of the holders of the Senior Secured Notes
will be automatically released, without the consent of the holders, upon a
release of the lien or liens under the terms of the Security Documents and the
Existing Credit Facility or if the release is approved by the requisite lenders
under the Existing Credit Facility. The Security Documents generally provide
that liens will be automatically released if the assets subject to the liens
are transferred or otherwise disposed of in compliance with the provisions of
the Existing Credit Facility. The Existing Credit Facility specifically
provides that liens will be automatically released from assets that are the
subject of a Major Asset Sale and that are transferred to a Subject Asset
Transferee according to the terms of the Existing Credit Facility.

   In addition, the collateral agent and Lyondell may amend the provisions of
the Security Documents with the consent of the requisite lenders and without
the consent of the holders of the Senior Secured Notes. The lenders under the
Existing Credit Facility will have the sole ability to control remedies
(including upon sale or liquidation after acceleration of the new notes or the
debt under the Existing Credit Facility) with respect to the collateral. The
Senior Secured Note Indentures will provide that Lyondell and its Restricted
Subsidiaries which are party to any Security Documents will comply with all the
covenants and agreements contained in such Security Documents the failure to
comply with which would have a material and adverse effect on the Liens
purported to be created thereby, unless such failure to comply is waived by the
requisite lenders under the Existing Credit facility and, after that waiver,
Lyondell is in compliance with the covenant described under "--Security." See
"Risk Factors--Holders of the Senior Secured Notes may not be able to fully
realize the value of their liens; in such case, holders of the Senior Secured
Notes will have an unsecured claim against Lyondell to the extent that amounts
due on the Senior Secured Notes exceed the proceeds from the sale of the
secured assets."

   From and after the date when all liens granted in favor of the holders of
Senior Indebtedness under the Existing Credit Facility are released, the
provisions regarding security described above will no longer apply. The
provisions of the covenant described below under "--Restrictive Covenants--
Liens--Senior Secured Notes" will, however, continue to apply.

Subsidiary Guarantees

   As of the date of these exchange offers, Lyondell Worldwide and Lyondell
Nederland are the only subsidiary guarantors of the new notes. Any Restricted
Subsidiary that Guarantees or secures the payment of any other Indebtedness of
Lyondell or any of its Restricted Subsidiaries must also Guarantee the payment
of the new notes, with some exceptions described below under "Limitation on
Issuance of Guarantees of Indebtedness by Subsidiaries." Lyondell Worldwide and
Lyondell Nederland will unconditionally guarantee the due and punctual payment
of the principal of and premium, if any, and interest and liquidated damages,
if any, on the new notes, when and as the same will become due and payable,
whether at maturity, upon redemption, by declaration or otherwise (the
"Subsidiary Guarantees").

   The obligations of the Subsidiary Guarantors will be limited so as not to
constitute a fraudulent conveyance under applicable law. The Subsidiary
Guarantees of the Senior Secured Notes will be general senior obligations of
Lyondell Worldwide and Lyondell Nederland, secured to the extent described
under "--Security." The Subsidiary Guarantees of the Senior Subordinated Notes
will be general senior subordinated unsecured obligations of Lyondell Worldwide
and Lyondell Nederland. See "--Subordination of Senior Subordinated Notes."

                                       77
<PAGE>

   No Subsidiary Guarantor may consolidate with or merge with or into (whether
or not the Subsidiary Guarantor is the surviving Person), another corporation,
Person or entity whether or not affiliated with the Subsidiary Guarantor unless
all of the following are true:

  (1) subject to the provisions of the following paragraph, the Person formed
      by or surviving any consolidation or merger, if other than Lyondell or
      a Subsidiary Guarantor, assumes all the obligations of the Subsidiary
      Guarantor under the new notes issued under the applicable indenture;

  (2) immediately after giving effect to the transaction, no Default or Event
      of Default exists; and

  (3) Lyondell would, at the time of the transaction and after giving pro
      forma effect thereto as if the transaction had occurred at the
      beginning of the applicable four-quarter period, both:

    (a) have a Consolidated Net Worth immediately after the transaction
        equal to or greater than the Consolidated Net Worth of Lyondell
        immediately preceding the transaction; and

    (b) except with respect to a consolidation or merger with a Person that
        has no outstanding Indebtedness, be permitted to incur at least
        $1.00 of additional Indebtedness under the Fixed Charge Coverage
        Ratio test stated in the covenant described under the caption "--
        Restrictive Covenants--Incurrence of Indebtedness and Issuance of
        Preferred Stock."

The requirements of conditions (1) and (2) listed above will not apply in the
case of a consolidation with or the merger of a Subsidiary Guarantor with or
into Lyondell and the requirements of condition (3) listed above will not apply
in the case of a consolidation with or the merger of a Subsidiary Guarantor
with or into another Subsidiary Guarantor.

   In the event of a sale or other disposition, by way of merger, consolidation
or otherwise, of all the Capital Stock of any Subsidiary Guarantor to any
Person that is not an Affiliate of Lyondell, the Subsidiary Guarantor will be
released and relieved of any obligations under its Subsidiary Guarantee if the
Net Proceeds of the sale or other disposition are applied in accordance with
the applicable provisions of the applicable indenture. See "Repurchase at the
Option of Holders--Asset Sales."

   Upon the release or discharge of the Guarantee which resulted in the
creation of the Subsidiary Guarantee of the Subsidiary Guarantor or, in the
case of Lyondell Worldwide and Lyondell Nederland, the release or discharge of
its Guarantee of Indebtedness under the Existing Credit Facility, the
Subsidiary Guarantors will be released and relieved of any obligations under
its Subsidiary Guarantee. A Subsidiary Guarantor will not be released and
relieved of its obligations, however, in the event of a discharge or release by
or as a result of payment under the Subsidiary Guarantee.

   Upon the designation of any Subsidiary Guarantor as an Unrestricted
Subsidiary according to the terms of the indentures, the Subsidiary Guarantor
will be released and relieved of any obligations under its Subsidiary
Guarantee. See "Restrictive Covenants--Limitations on Issuances of Guarantees
of Indebtedness by Subsidiaries."

Subordination of Senior Subordinated Notes

   The payment of principal of and premium, if any, and interest on the Senior
Subordinated Notes will be subordinated in right of payment, as stated in the
Senior Subordinated Note Indenture, to the prior payment in full of all Senior
Indebtedness, whether outstanding on or incurred after May 17, 1999.

   If Lyondell fails to make any payment on the Senior Subordinated Notes when
due or within any applicable grace period, whether or not on account of the
payment blockage provision referred to below, the failure will constitute an
Event of Default under the Senior Subordinated Note Indenture and will enable
the holders to accelerate the maturity of the Senior Subordinated Notes. See
"--Events of Default and Remedies."

   The obligations of each Subsidiary Guarantor under its Senior Subordinated
Note Subsidiary Guarantee are unsecured senior subordinated obligations. As
such, the rights of holders of Senior Subordinated Notes to

                                       78
<PAGE>

receive payment by a Subsidiary Guarantor under its Subsidiary Guarantee will
be subordinated in right of payment to the rights of holders of Senior
Indebtedness of that Subsidiary Guarantor, including its Senior Secured Note
Subsidiary Guarantee and its Guarantee of the Existing Credit Facility. The
terms of the subordination provisions described below with respect to
Lyondell's obligations under the Senior Subordinated Notes apply equally to a
Subsidiary Guarantor and the obligations of that Subsidiary Guarantor under its
Senior Subordinated Note Subsidiary Guarantee.

   The terms of the subordination provisions described below will not apply to
payments from money or the proceeds of U.S. Government obligations deposited in
trust before the occurrence of an event prohibiting payment of or on the Senior
Subordinated Notes and held in trust by the Senior Subordinated Note Trustee
for the payment of principal of and interest on the Senior Subordinated Notes
under the provisions described under "--Defeasance."

   Upon any distribution to creditors of Lyondell in a liquidation or
dissolution of Lyondell or in a bankruptcy, reorganization, insolvency,
receivership or similar proceeding relating to Lyondell or its property, an
assignment for the benefit of creditors or any marshaling of Lyondell's assets
and liabilities, the holders of Senior Indebtedness will be entitled to receive
payment in full in cash or cash equivalents of all Obligations due in respect
of the Senior Indebtedness before the Holders of Senior Subordinated Notes will
be entitled to receive any payment with respect to the Subordinated Note
Obligations. Until all Obligations with respect to Senior Indebtedness are paid
in full in cash or cash equivalents, any distribution to which the Holders of
Senior Subordinated Notes would be entitled will be made to the holders of
Senior Indebtedness, (except that Holders of Senior Subordinated Notes may
receive and retain Permitted Junior Securities and payments made from the trust
described under "--Defeasance." Payment in full on all obligations that were
due would include interest after the commencement of any proceeding at the rate
specified in the applicable Senior Indebtedness.

   Lyondell also may not make any payment upon or in respect of the
Subordinated Note Obligations, except in Permitted Junior Securities or from
the trust described under "--Defeasance," if:

  . a default in the payment of the principal of, or premium, if any, or
    interest on, or commitment fees relating to, Designated Senior
    Indebtedness occurs and is continuing beyond any applicable period of
    grace; or

  . any other default occurs and is continuing with respect to Designated
    Senior Indebtedness that permits holders of the Designated Senior
    Indebtedness as to which the default relates to accelerate its maturity
    and the Senior Subordinated Note Trustee receives a notice of the default
    (a "Payment Blockage Notice") from Lyondell or the holders of any
    Designated Senior Indebtedness. Payments on the Senior Subordinated Notes
    may and will be resumed including the payment of any amounts previously
    blocked by the Payment Blockage Notice:

    (1) in the case of a payment default, upon the date on which the default
        is cured or waived; and

    (2) in case of a nonpayment default, the earlier of the date on which
        the nonpayment default is cured or waived or 179 days after the date
        on which the applicable Payment Blockage Notice is received, unless
        the maturity of any Designated Senior Indebtedness has been
        accelerated.

   No new period of payment blockage may be commenced unless and until 360 days
have elapsed since the effectiveness of the immediately prior Payment Blockage
Notice. No nonpayment default that existed or was continuing on the date of
delivery of any Payment Blockage Notice to the Senior Subordinated Note Trustee
will be, or be made, the basis for a subsequent Payment Blockage Notice unless
the default will have been waived or cured for a period of not less than 90
days.

   "Designated Senior Indebtedness" means:

  . the Indebtedness, other than Hedging Obligations, outstanding under the
    Existing Credit Facility; and

  . any other Senior Indebtedness permitted under the Senior Subordinated
    Note Indenture the principal amount of which is $25.0 million or more and
    that has been designated by Lyondell in writing to the Senior
    Subordinated Note Trustee as "Designated Senior Indebtedness."

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<PAGE>

   "Permitted Junior Securities" means Equity Interests in Lyondell or debt
securities of Lyondell that are subordinated to all Senior Indebtedness, and
any debt securities issued in exchange for Senior Indebtedness, to
substantially the same extent as, or to a greater extent than, the Senior
Subordinated Notes are subordinated to Senior Indebtedness.

   "Senior Indebtedness" means, with respect to any Person:

  . all Obligations of that Person outstanding under the Existing Credit
    Facility and all Hedging Obligations payable to a lender or an Affiliate
    of a lender or to a Person that was a lender or an Affiliate of a lender
    at the time the contract was entered into under the Existing Credit
    Facility, including, without limitation, interest accruing subsequent to
    the filing of, or which would have accrued but for the filing of, a
    petition for bankruptcy, whether or not the interest is an allowable
    claim in the bankruptcy proceeding;

  . any other Indebtedness, unless the instrument under which that
    Indebtedness is incurred expressly provides that it is subordinated in
    right of payment to any other Senior Indebtedness of that Person; and

  . all Obligations with respect to the foregoing.

Notwithstanding anything to the contrary in the foregoing, Senior Indebtedness
will not include:

  . any liability for federal, state, local or other taxes;

  . any Indebtedness of that Person to any of its Subsidiaries or other
    Affiliates;

  . any trade payables;

  . any debt securities and guarantees issued to any trust, partnership or
    other entity affiliated with Lyondell which is a financing vehicle of
    Lyondell in connection with the issuance of preferred securities by the
    financing entity; or

  . any Indebtedness that is incurred in violation of the Senior Subordinated
    Note Indenture.

   "Subordinated Note Obligations" means all Obligations with respect to the
Senior Subordinated Notes, including, without limitation, principal, premium
of, if any, and interest and liquidated damages, if any, payable under the
terms of the Senior Subordinated Notes (including upon the acceleration or
redemption thereof), together with and including any amounts received or
receivable upon the exercise of rights of recision or other rights of action
(including claims for damages) or otherwise.

   The Senior Subordinated Note Indenture will further require that Lyondell
promptly notify holders of Designated Senior Indebtedness if payment of the
Senior Subordinated Notes is accelerated because of an Event of Default. As a
result of the subordination provisions described above, in the event of a
liquidation or insolvency, holders of Senior Subordinated Notes may recover
less ratably than our creditors who are holders of Senior Indebtedness.

Mandatory Redemption

   Except as described below under "--Repurchase at the Option of Holders,"
Lyondell will not be required to make any mandatory redemption or sinking fund
payments with respect to the new notes.

Optional Redemption

 Series A Senior Secured Notes

   We can redeem the Series A Senior Secured Notes, in whole, at any time, or
in part, from time to time, at our option upon not less than 30 nor more than
60 days' notice at a redemption price equal to the make-whole price described
below.

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   "Make-Whole Price" means an amount equal to the greater of:

  . 100% of the principal amount of the Series A Senior Secured Notes; and

  . as determined by an Independent Investment Banker (as defined below), the
    sum of the present values of the remaining scheduled payments of
    principal and interest thereon discounted to the date of redemption on a
    semiannual basis (assuming a 360-day year consisting of twelve 30-day
    months) at the Adjusted Treasury Rate (as defined below);

plus, in each case, accrued and unpaid interest and liquidated damages, if any,
thereon to the date of redemption.

   "Adjusted Treasury Rate" means, with respect to any redemption date, the
rate per annum equal to the semiannual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for the redemption date, plus 0.5%.

   "Comparable Treasury Issue" means the United States Treasury security
selected by an Independent Investment Banker as having a maturity comparable to
the remaining term of the Series A Senior Secured Notes to be redeemed that
would be utilized, at the time of selection and in accordance with customary
financial practice, in pricing new issues of corporate debt securities of
comparable maturity to the remaining term of the Series A Senior Secured Notes.

   "Comparable Treasury Price" means, with respect to any redemption date:

  . the average of the bid and asked prices for the Comparable Treasury Issue
    on the third Business Day preceding the redemption date, as listed in the
    daily statistical release (or any successor release) published by the
    Federal Reserve Bank of New York and designated "Composite 3:30 p.m.
    Quotations for U.S. Government Securities"; or

  . if the release (or any successor release) is not published or does not
    contain the prices on the Business Day:

    (1) the average of the Reference Treasury Dealer Quotations for the
        redemption date after excluding the highest and lowest of the
        Reference Treasury Dealer Quotations; or

    (2) if the Series A Senior Secured Note Trustee obtains fewer than three
        Reference Treasury Dealer Quotations, the average of all the
        quotations.

   "Reference Treasury Dealer Quotations" means, with respect to each Reference
Treasury Dealer and any redemption date, the average, as determined by the
Series A Senior Secured Note Trustee, of the bid and asked prices for the
Comparable Treasury Issue (expressed in each case as a percentage of its
principal amount) quoted in writing to the Series A Senior Secured Note Trustee
by the Treasury Reference Dealer at 5:00 p.m. on the third Business Day
preceding the redemption date.

   "Independent Investment Banker" means a Reference Treasury Dealer appointed
by Lyondell.

   "Reference Treasury Dealer" means a primary U.S. Government securities
dealer in New York City (a "Primary Treasury Dealer") selected by Lyondell.

 Series B Senior Secured Notes

   We cannot redeem the Series B Senior Secured Notes before May 1, 2004.
Thereafter, we may redeem the Series B Senior Secured Notes at our option, in
whole or from time to time in part, upon not less than 30 nor more than 60
days' notice, at the redemption prices (expressed as percentages of principal
amount) described below plus accrued and unpaid interest and liquidated
damages, if any, thereon to the applicable redemption date, if redeemed during
the twelve-month period beginning on May 1 of the following years:

<TABLE>
<CAPTION>
      Year                                                            Percentage
      ----                                                            ----------
      <S>                                                             <C>
      2004...........................................................  104.938%
      2005...........................................................  102.469%
      2006...........................................................  100.000%
</TABLE>


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<PAGE>

 Senior Subordinated Notes

   Except as provided below, we cannot redeem the Senior Subordinated Notes
before May 1, 2004. Thereafter, we may redeem the Senior Subordinated Notes at
our option, in whole or from time to time in part, upon not less than 30 nor
more than 60 days' notice, at the redemption prices (expressed as percentages
of principal amount) described below plus accrued and unpaid interest and
liquidated damages, if any, thereon to the applicable redemption date, if
redeemed during the twelve-month period beginning on May 1 of the following
years:

<TABLE>
<CAPTION>
      Year                                                            Percentage
      ----                                                            ----------
      <S>                                                             <C>
      2004...........................................................  105.438%
      2005...........................................................  103.625%
      2006...........................................................  101.812%
      2007...........................................................  100.000%
</TABLE>

   Notwithstanding the foregoing, on or before May 1, 2002, we can redeem in
the aggregate up to 35% of the aggregate principal amount of the Senior
Subordinated Notes from time to time originally issued with the net cash
proceeds of one or more Public Equity Offerings, at a redemption price
(expressed as a percentage of principal amount on the redemption date) of
110.875% plus accrued and unpaid interest and liquidated damages, if any, to
the redemption date; provided that:

  . at least 65% of the aggregate principal amount of the Senior Subordinated
    Notes from time to time originally issued under the applicable indenture
    must remain outstanding and be held, directly or indirectly, by Persons
    other than Lyondell and its Affiliates, immediately after each
    redemption; and

  . the redemption occurs within 90 days of the closing of a Public Equity
    Offering.

Selection and Notice

   If less than all the new notes issued under an indenture are to be redeemed
at any time, selection of the applicable new notes for redemption will be made
by the applicable Trustee in compliance with the requirements of the principal
national securities exchange, if any, on which the new notes are listed. If the
new notes are not so listed, selection of the applicable new notes for
redemption will be on a pro rata basis, by lot or by a method that the
applicable Trustee deems fair and appropriate. However, no new notes of $1,000
or less will be redeemed in part.

   Notices of redemption will be mailed by first class mail at least 30 but not
more than 60 days before the redemption date to each holder of new notes to be
redeemed at its registered address. Notices of redemption may not be
conditional. If any new note is to be redeemed in part only, the notice of
redemption that relates to the applicable note will state the portion of the
principal amount to be redeemed. A new note in principal amount equal to the
unredeemed portion will be issued in the name of the applicable holder upon
cancellation of the original note. New notes called for redemption become due
on the date fixed for redemption. On and after the redemption date, interest
ceases to accrue on new notes or portions of the new notes called for
redemption.

Repurchase at the Option of Holders

 Change of Control

   Upon the occurrence of a Change of Control, each holder of new notes will
have the right to require us to repurchase all or any part (equal to $1,000 or
an integral multiple thereof) of its new notes under the Change of Control
offer described below at an offer price in cash equal to 101% of the aggregate
principal amount plus accrued and unpaid interest and liquidated damages, if
any, to the date of purchase (the "Change of Control Payment") on a date that
is not more than 90 days after the occurrence of the Change of Control (the
"Change of Control Payment Date"). Within 30 days following any Change of
Control, Lyondell or the applicable

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Trustee will mail a notice to each holder offering to repurchase the new notes
held by a holder under the procedures specified in the notice. We will comply
with the requirements of Rule 14e-1 under the Exchange Act and any other
securities laws and regulations to the extent those laws and regulations are
applicable in connection with the repurchase of the new notes as a result of a
Change of Control.

   On the Change of Control Payment Date, we will, to the extent lawful:

  . accept for payment all new notes or portions of the new notes properly
    tendered and not withdrawn under the Change of Control offer;

  . deposit with the applicable Paying Agent an amount equal to the Change of
    Control Payment in respect of all new notes or portions thereof so
    tendered; and

  . deliver or cause to be delivered to the applicable Trustee the new notes
    so accepted together with an Officers' Certificate stating the aggregate
    principal amount of new notes or portions of new notes being purchased by
    Lyondell.

   The Paying Agent will promptly mail to each holder of new notes so tendered
the Change of Control Payment for those new notes, and the applicable Trustee
will promptly authenticate and mail (or cause to be transferred by book entry)
to each holder a note equal in principal amount to any unpurchased portion of
the new notes surrendered, if any. However, each note will be in a principal
amount of $1,000 or an integral multiple thereof.

   Before complying with the provisions of this covenant, but in any event
within 90 days following a Change of Control, we must either repay all
outstanding Senior Indebtedness or obtain the requisite consents, if any, under
all agreements governing outstanding Senior Indebtedness, to the extent
necessary, to permit the repurchase of Senior Subordinated Notes required by
this covenant.

   A failure by Lyondell to comply with the provisions of the preceding
paragraphs will constitute an Event of Default under the applicable indenture.
Except as described above with respect to a Change of Control, the indentures
will not contain provisions that permit the holders of the new notes to require
us to purchase or redeem the new notes in the event of a takeover,
recapitalization or similar transaction. See "--Events of Default and
Remedies."

   There can be no assurance that Lyondell will have the financial resources to
purchase the new notes, particularly if a Change of Control triggers a similar
repurchase requirement for, or results in the acceleration of, other
Indebtedness. The Existing Credit Facility provides that some events
constituting a Change of Control will constitute a default under the Existing
Credit Facility and could result in the acceleration of the maturity of the
Existing Credit Facility. Future indebtedness might contain similar provisions.
If a Change of Control occurs, Lyondell could try to refinance the Existing
Credit Facility. If Lyondell does not refinance the Existing Credit Facility,
Lyondell might not be allowed to purchase the Senior Subordinated Notes. As a
result, Lyondell would be in default under the Senior Subordinated Note
Indenture, which would also be a default under the Senior Secured Note
Indenture and the Existing Credit Facility. If this occurs, the subordination
provisions of the Senior Subordinated Note Indenture would restrict payments to
the Senior Subordinated Noteholders. Accordingly, Lyondell might not be able to
fulfill its obligation to repurchase any new notes if a Change of Control
occurs. See "Risk Factors--Lyondell may not be able to repurchase your new
notes upon a change of control."

   Lyondell will not be required to make a Change of Control offer upon a
Change of Control if a third party makes the Change of Control offer at the
same or a higher purchase price, at the same times and otherwise in substantial
compliance with the requirements applicable to a Change of Control offer made
by Lyondell and purchases all new notes validly tendered and not withdrawn
under the Change of Control offer.

   "Change of Control" means the occurrence of any of the following:


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<PAGE>

  . the sale, transfer, conveyance or other disposition, in one or a series
    of related transactions, of all or substantially all the assets of
    Lyondell and its Subsidiaries taken as a whole to any Person or group (as
    the term is used in Sections 13(d)(3) and 14(d)(2) of the Exchange Act)
    other than to a Person or group who, before the transaction, held a
    majority of the voting power of the voting stock of Lyondell;

  . the acquisition by any Person or group (as defined above) of a direct or
    indirect interest in more than 50% of the voting power of the voting
    stock of Lyondell, by way of merger or consolidation or otherwise; or

  . the first day on which a majority of the members of the board of
    directors of Lyondell are not Continuing Directors.

   The phrase "all or substantially all" the assets of Lyondell will likely be
interpreted under applicable state law and will be dependent upon particular
facts and circumstances. As a result, there may be a degree of uncertainty in
ascertaining whether a sale or transfer of "all or substantially all" the
assets of Lyondell has occurred, in which case a holder's ability to obtain
the benefit of a Change of Control offer may be impaired.

 Asset Sales

   We cannot, and cannot permit any of our Restricted Subsidiaries to,
consummate an Asset Sale unless:

  . Lyondell and/or the Restricted Subsidiary, as the case may be, receives
    consideration at the time of the Asset Sale at least equal to the fair
    market value (as conclusively evidenced by a resolution of the board of
    directors of Lyondell listed in an Officers' Certificate delivered to the
    Trustees) of the assets or Equity Interests issued or sold or otherwise
    disposed of; and

  . at least 80% of the consideration therefor received by Lyondell and/or
    the Restricted Subsidiary is in the form of:

    (1) cash or Cash Equivalents; or

    (2) a controlling interest or a joint venture interest (to the extent
        otherwise permitted by the indentures) in a business engaged in a
        Permitted Business or long-term property or assets that are used or
        useful in a Permitted Business.

However, the amount of (x) any liabilities as shown on Lyondell's or the
Restricted Subsidiary's most recent balance sheet of Lyondell or any
Restricted Subsidiary, other than contingent liabilities and liabilities that
are by their terms subordinated to the new notes or any guarantee of the new
notes, that are assumed by the transferee of any assets under a customary
novation agreement that releases Lyondell or the Restricted Subsidiary from
further liability and (y) any securities, notes or other obligations received
by Lyondell or any Restricted Subsidiary from the transferee that are promptly
converted by Lyondell or the Restricted Subsidiary into cash (to the extent of
the cash received) will be deemed to be cash for purposes of this provision.

   Within 360 days after the receipt of any Net Proceeds from an Asset Sale,
Lyondell may apply the Net Proceeds, at its option either to:

  (1) permanently repay Senior Indebtedness and correspondingly reduce
      commitments with respect thereto in the case of revolving borrowings of
      Lyondell or a Subsidiary Guarantor or repay Indebtedness and
      correspondingly reduce commitments with respect thereto in the case of
      revolving borrowings of any Restricted Subsidiary that is not a
      Subsidiary Guarantor. However, the Senior Secured Notes Indenture will
      provide that, so long as the Senior Secured Notes are secured, only
      repayment of Senior Indebtedness incurred under the Existing Credit
      Facility, but not any refinancing of this debt other than a credit
      facility with commercial banks and other lenders, or the 9.9%
      Debentures due 2000 of ARCO Chemical will constitute a repayment of
      Indebtedness permitted under this clause (1); or


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<PAGE>

  (2) acquire a controlling interest or a joint venture interest to the
      extent otherwise permitted by the Indentures in another business or,
      the making of a capital expenditure or the acquisition of other long-
      term assets, in each case, in a Permitted Business or enter into a
      binding commitment for any expenditure or acquisition; provided that
      the binding commitment will be treated as a permitted application of
      Net Proceeds from the date of the commitment until and only until the
      earlier of (x) the date on which the expenditure or acquisition is
      consummated and (y) the 180th day following the expiration of the
      aforementioned 360 day period. If the expenditure or acquisition
      contemplated by the binding commitment is not consummated on or before
      the 180th day and Lyondell has not applied the Net Proceeds under
      clause (1) above on or before the 180th day, the commitment will be
      deemed not to have been a permitted application of Net Proceeds at any
      time.

However, the Senior Secured Note Indentures will provide that, so long as the
Senior Secured Notes are secured, Lyondell may not apply Net Proceeds of a
Significant Asset Sale under option (2) above to satisfy its obligations under
the first sentence of this paragraph except to the extent that the provisions
of the Existing Credit Facility (but not any refinancing thereof other than a
credit facility with commercial banks and other lenders) require a mandatory
prepayment from the proceeds but the requisite lenders have waived mandatory
prepayment. Pending the final application of any Net Proceeds, Lyondell may
temporarily reduce the revolving Indebtedness under the Existing Credit
Facility or otherwise invest the Net Proceeds in any manner that is not
prohibited by the indentures.

Any Net Proceeds from Asset Sales that are not applied or invested as provided
above will be deemed to constitute "Excess Proceeds." When the aggregate amount
of Excess Proceeds under an indenture exceeds $25 million, Lyondell will be
required to make an offer to all holders of new notes issued under the
applicable indenture (an "Asset Sale Offer") to purchase the maximum principal
amount of new notes and if Lyondell:

  . is required to do so under the terms of any other Indebtedness ranking
    pari passu with the new notes, to purchase the other Indebtedness; and

  . elects to do so, to purchase any Existing ARCO Chemical Debt, on a pro
    rata basis with the new notes, that may be purchased out of the Excess
    Proceeds, at an offer price in cash in an amount equal to 100% of the
    principal amount thereof plus accrued and unpaid interest and liquidated
    damages, if any, thereon to the date of purchase, in accordance with the
    procedures described in the applicable indenture.

The Senior Subordinated Note Indenture will provide that, before complying with
the provisions of this covenant, we must either repay all outstanding Senior
Indebtedness or obtain the requisite consents, if any, under all agreements
governing outstanding Senior Indebtedness, to the extent necessary, to permit
the repurchase of Senior Subordinated Notes required by this covenant. To the
extent that the aggregate amount of Senior Secured Notes and Senior
Subordinated Notes, and, in each case, any other pari passu Indebtedness
subject to the Asset Sale Offer, tendered under the Asset Sale Offer is less
than the Excess Proceeds, we may, subject to the other terms of the indentures,
use any remaining Excess Proceeds for general corporate purposes. If the
aggregate principal amount of new notes surrendered by holders thereof in
connection with any Asset Sale Offer exceeds the amount of Excess Proceeds, the
Trustee will select the new notes to be purchased on a pro rata basis. Upon
completion of the offer to purchase made under each indenture, the amount of
Excess Proceeds under the applicable indenture will be reset at zero.

Restrictive Covenants

 Restricted Payments

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, directly or indirectly:

  (1) declare or pay any dividend or make any distribution on account of
      Lyondell's or any of its Restricted Subsidiaries' Equity Interests
      other than (x) dividends or distributions payable in Qualified

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     Equity Interests of Lyondell and (y) dividends or distributions payable
     to Lyondell or any Restricted Subsidiary of Lyondell;

  (2) purchase, redeem or otherwise acquire or retire for value any Equity
      Interests of Lyondell, any of its Restricted Subsidiaries or any
      Affiliate of Lyondell, other than any Equity Interests owned by
      Lyondell or any of its Restricted Subsidiaries;

  (3) make any principal payment on, or purchase, redeem, defease or
      otherwise acquire or retire for value any Indebtedness ("Subordinated
      Debt") of Lyondell or any Restricted Subsidiary that is subordinated by
      its terms to the new notes or the Subsidiary Guarantees, as applicable,
      issued under the applicable indenture, other than Indebtedness owed to
      Lyondell or any Restricted Subsidiary, except, in each case, payment of
      interest or principal at Stated Maturity; or

  (4) make any Restricted Investment (all the payments and other actions
      described in clauses (1) through (4) being collectively referred to as
      "Restricted Payments");

unless, at the time of and after giving effect to the Restricted Payment:

  (a) no Default or Event of Default will have occurred and be continuing
      after giving effect to the Restricted Payment;

  (b) Lyondell would, at the time of the Restricted Payment and after giving
      pro forma effect to the Restricted Payment as if the Restricted Payment
      had been made at the beginning of the most recently ended four full
      fiscal quarters for which financial statements have been filed with the
      SEC under the covenant described below under the caption "--Reports"
      immediately preceding the date of the Restricted Payment, have been
      permitted to incur at least $1.00 of additional Indebtedness under the
      Fixed Charge Coverage Ratio test described in the first paragraph of
      the covenant in the applicable indenture described below under the
      caption "--Incurrence of Indebtedness and Issuance of Preferred Stock";
      and

  (c) the Restricted Payment, together with the aggregate of all other
      Restricted Payments made by Lyondell and its Restricted Subsidiaries
      after May 17, 1999, excluding Restricted Payments permitted by clauses
      (b) to the extent paid to Lyondell or any of its Restricted
      Subsidiaries or to the extent the distributions are deducted as a
      minority interest in calculating Consolidated Net Income, (c), (d),
      (e), (g), (j), (n) and (p) of the next succeeding paragraph and 50% of
      any Restricted Payments permitted by clause (h) of the next succeeding
      paragraph, is less than the sum, without duplication, of:

    (1) 50% of the Consolidated Net Income of Lyondell for the period (taken
        as one accounting period) from the beginning of the first fiscal
        quarter commencing on April 1, 1999 to the end of Lyondell's most
        recently ended fiscal quarter for which financial statements have
        been filed with the SEC under the covenant described below under the
        caption "--Reports" at the time of the Restricted Payment or, if the
        Consolidated Net Income for the period is a deficit, less 100% of
        the deficit, plus

    (2) 100% of the aggregate net cash proceeds received by Lyondell or any
        of its Restricted Subsidiaries from the issue or sale, other than to
        a Subsidiary or Joint Venture of Lyondell, after May 17, 1999 of
        Qualified Equity Interests of Lyondell or of debt securities of
        Lyondell or any of its Restricted Subsidiaries that have been
        converted into or exchanged for Qualified Equity Interests of
        Lyondell, plus

    (3) to the extent that any Restricted Investment other than a Restricted
        Investment permitted to be made under clauses (g) or (h) below that
        was made after May 17, 1999 is sold for cash or otherwise
        liquidated, repaid or otherwise reduced, including by way of
        dividend, to the extent not included in calculating Consolidated Net
        Income, the lesser of (A) the cash return with respect to the
        Restricted Investment (less the cost of disposition, if any) and (B)
        the initial amount of the Restricted Investment, plus

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    (4) an amount equal to the sum of:

      (A) the net reduction in Investments in Unrestricted Subsidiaries
          resulting from dividends, repayments of loans or other transfers
          of assets to the extent not included in calculating Consolidated
          Net Income, in each case to Lyondell or any Restricted
          Subsidiary from Unrestricted Subsidiaries; and

      (B) the portion proportionate to Lyondell's equity interest in the
          Subsidiary of the fair market value of the net assets of an
          Unrestricted Subsidiary at the time the Unrestricted Subsidiary
          is designated a Restricted Subsidiary;

    provided, however, that the foregoing sum will not exceed, in the case
    of any Unrestricted Subsidiary, the amount of Restricted Investments,
    other than Restricted Investments permitted to be made under clauses
    (g) or (h) below, previously made after May 17, 1999 by Lyondell or any
    Restricted Subsidiary in the Unrestricted Subsidiary.

   The amount of any Restricted Payment, if other than cash, will be the fair
market value (as conclusively evidenced by a resolution of the board of
directors) of the asset(s) proposed to be transferred by Lyondell or the
Restricted Subsidiary, as the case may be, under the Restricted Payment.

   If, other than with respect to payments made under clauses (a) and (n)
below, no Default or Event of Default will have occurred and be continuing
after giving effect to the Restricted Payment, the foregoing provisions will
not prohibit the following Restricted Payments:

  (a) the payment of any dividend within 60 days after the date of the
      dividend declaration, if at said date of declaration the payment would
      have complied with the provisions of the applicable indenture;

  (b) dividends or distributions by any Restricted Subsidiary of Lyondell
      payable either:

    (1) to all holders of a class of Capital Stock of the Restricted
        Subsidiary on a pro rata basis or on a basis that is more favorable
        to Lyondell; provided that at least 50% of the class of Capital
        Stock is held by Lyondell and/or one or more of its Restricted
        Subsidiaries; or

    (2) to all holders of a class of Preferred Stock of a Restricted
        Subsidiary that is not a Subsidiary Guarantor issued after May 17,
        1999 in compliance with the covenant described below under the
        caption "--Incurrence of Indebtedness and Issuance of Preferred
        Stock";

  (c) the payment of cash dividends on any series of Disqualified Stock
      issued after May 17, 1999 in an aggregate amount not to exceed the cash
      received by Lyondell since May 17, 1999 upon issuance of the
      Disqualified Stock;

  (d) the redemption, repurchase, retirement or other acquisition of any
      Equity Interests of Lyondell, any Restricted Subsidiary or any Joint
      Venture, or the acquisition of all the outstanding Equity Interests of
      any Person that conducts no operations and has no assets or liabilities
      other than the ownership of Equity Interests in a Joint Venture, in
      exchange for, or out of the net cash proceeds of the substantially
      concurrent sale (other than to a Subsidiary or Joint Venture of
      Lyondell) of, Qualified Equity Interests of Lyondell; provided that the
      amount of any net cash proceeds that are utilized for any redemption,
      repurchase, retirement or other acquisition will be excluded from
      clause (c)(2) of the preceding paragraph;

  (e) the defeasance, redemption or repurchase of Subordinated Debt with the
      net cash proceeds from an incurrence of Permitted Refinancing or in
      exchange for or out of the net cash proceeds from the substantially
      concurrent sale (other than to a Subsidiary or Joint Venture of
      Lyondell) of Qualified Equity Interests of Lyondell; provided that the
      amount of any net cash proceeds that are utilized for any redemption,
      repurchase, retirement or other acquisition will be excluded from
      clause (c)(2) of the preceding paragraph;

  (f) the repurchase, redemption or other acquisition or retirement for value
      of (i) any Equity Interests of Lyondell or any Subsidiary of Lyondell
      held by any member of Lyondell's or any of its

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      Subsidiaries' management under any management equity subscription
      agreement or stock option agreement or (ii) any Equity Interests of
      Lyondell which are or are intended to be used to satisfy issuances of
      Equity Interests upon exercise of employee or director stock options or
      upon exercise or satisfaction of other similar instruments outstanding
      under employee or director benefit plans of Lyondell or any Subsidiary
      of Lyondell; provided that the aggregate price paid for all the
      repurchased, redeemed, acquired or retired Equity Interests will not
      exceed $5.0 million in any fiscal year of Lyondell;

  (g) Restricted Investments in any of the Specified Joint Ventures,
      including without limitation, the purchase of Equity Interests of a
      Specified Joint Venture directly from another Person or the purchase of
      all the outstanding Equity Interests of any Person that conducts no
      operations and has no assets or liabilities other than the ownership of
      Equity Interests of a Specified Joint Venture, to the extent that the
      proceeds of these investments are used to purchase or redeem an
      interest of another Person in the Specified Joint Venture other than
      Lyondell, a Restricted Subsidiary or an Affiliate of Lyondell, except a
      Person that is deemed to be an Affiliate solely by virtue of its
      ownership of Equity Interests of Lyondell acquired in exchange for
      Equity Interests in the Specified Joint Venture; provided that after
      giving pro forma effect thereto as if the Restricted Payment and any
      related incurrence of Indebtedness had been made at the beginning of
      the most recently ended four full fiscal quarter period for which
      financial statements have been filed with the SEC under the covenant
      described below under the caption "--Reports" immediately preceding the
      date of the Restricted Payment, Lyondell would have been permitted to
      incur at least $1.00 of additional Indebtedness under the Fixed Charge
      Coverage Ratio test described in the first paragraph of the covenant in
      the applicable indenture described below under the caption "--
      Incurrence of Indebtedness and Issuance of Preferred Stock";

  (h) Restricted Investments in any Joint Venture made during any fiscal year
      of Lyondell or within 45 days after the end of the fiscal year in
      amounts that, together with all other Restricted Investments made in
      the Joint Venture in respect of the fiscal year in reliance on this
      clause (h) during the fiscal year or within 45 days after the end of
      the fiscal year, do not exceed the amount of dividends or distributions
      previously paid in respect of the fiscal year to Lyondell or any
      Restricted Subsidiary by the Joint Venture;

  (i) the payment of dividends on Lyondell's common stock in an aggregate
      amount per annum not to exceed the product of (i) $0.90 and (ii) the
      sum, without duplication, of

         (x) 117,315,442 shares, which is the sum of the number of shares
       outstanding immediately before the May 17, 1999 common stock offering
       plus the number of shares issued in that offering; plus

         (y) if Lyondell issues shares of its common stock after May 17,
       1999, to the extent (1) the shares are issued in exchange for or (2)
       the net cash proceeds therefrom are used substantially concurrently
       to acquire Equity Interests of a Specified Joint Venture held by a
       Person other than Lyondell, a Restricted Subsidiary or an Affiliate
       of Lyondell, except a Person that is deemed to be an Affiliate solely
       by virtue of its ownership of Equity Interests of Lyondell acquired
       in exchange for Equity Interests in the Specified Joint Venture, that
       immediately before the issuance was or as a result of the exchange or
       acquisition becomes a Restricted Subsidiary and the Specified Joint
       Venture is not subsequently designated as an Unrestricted Subsidiary,
       the number of shares of common stock; plus

         (z) the sum of (1) 1,000,000 and (2) the number of shares of common
       stock of Lyondell as are issued after May 17, 1999 under the exercise
       of employee or director stock options granted before May 17, 1999 or
       issued after May 17, 1999 under other employee or director benefit
       plans of Lyondell or any of its Restricted Subsidiaries or issuable
       under the exercise of employee or director stock options granted
       after May 17, 1999; provided that the aggregate number of shares
       includable under this subclause (z)(2) with respect to shares issued
       or issuable during any fiscal year of Lyondell will not exceed
       1,000,000;


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     provided further that the number of shares referred to in subclauses
     (x), (y) and (z) will be adjusted to reflect any stock split or reverse
     stock split or stock dividend made after May 17, 1999 and before the
     date the shares were issued;

  (j) distributions or payments of Receivables Fees;

  (k)(1) Investments in any Joint Venture or Unrestricted Subsidiary
         organized to construct, own and/or operate a propylene oxide plant
         in the European Union in an aggregate amount that, together with all
         other Investments made under this clause (k), does not exceed $100.0
         million; and

    (2) the pledge of the Capital Stock of the Joint Venture or Unrestricted
        Subsidiary or of a Joint Venture Subsidiary that has no assets and
        conducts no operations other than the holding directly or indirectly
        of Equity Interests of the Joint Venture to secure Non-Recourse Debt
        of the Joint Venture or Unrestricted Subsidiary;

  (l)(1) (x) the transfer of the TDI Assets to a newly formed Joint Venture
         or Unrestricted Subsidiary or (y) the designation of any Restricted
         Subsidiary that has no assets or liabilities other than all or a
         portion of the TDI Assets as an Unrestricted Subsidiary, in each
         case, in connection with the incurrence of Indebtedness by the Joint
         Venture or Unrestricted Subsidiary or Rhodia or a wholly owned
         subsidiary of Rhodia to improve the Rhodia TDI Plant; and

    (2) the pledge of the Capital Stock of the Joint Venture or Unrestricted
        Subsidiary or of a Joint Venture Subsidiary that has no assets and
        conducts no operations other than the holding directly or indirectly
        of Equity Interests of the Joint Venture to secure Non-Recourse Debt
        of the Joint Venture or Unrestricted Subsidiary or Rhodia or a
        wholly owned subsidiary of Rhodia;

  (m) the repurchase of any Subordinated Debt at a purchase price not greater
      than 101% of the principal amount thereof in the event of (x) a Change
      of Control under a provision no more favorable to the holders thereof
      than the provision of the applicable indenture described under "--
      Repurchase at the Option of the Holders--Change of Control" or (y) an
      Asset Sale under a provision no more favorable to the holders thereof
      than the provision of the applicable indenture described under "--
      Repurchase at the Option of the Holders--Asset Sales"; provided that,
      in each case, before the repurchase Lyondell has made a Change of
      Control offer or Asset Sale Offer, as applicable, and repurchased all
      new notes issued under the applicable indenture that were validly
      tendered for payment in connection with the Change of Control offer or
      Asset Sale Offer;

  (n) distributions by any Restricted Subsidiary or Joint Venture of
      chemicals to a holder of Capital Stock of the Restricted Subsidiary or
      Joint Venture if the distributions are made under a provision in a
      joint venture agreement or other arrangement entered into in connection
      with the establishment of the Joint Venture or Restricted Subsidiary
      that requires the holder to pay a price for the chemicals equal to that
      which would be paid in a comparable transaction negotiated on an arms-
      length basis or under a provision that imposes a substantially
      equivalent requirement;

  (o) any other Restricted Payment which, together with all other Restricted
      Payments made under this clause (o) on or after the date of the
      applicable indenture, does not exceed $25 million (after giving effect
      to any subsequent reduction in the amount of any Investments made under
      this clause (o) as a result of the repayment or other disposition
      thereof for cash as described in clause (3) of the first paragraph
      above, the amount of the reduction not to exceed the amount of the
      Investments previously made under this clause (o)); and

  (p) dividends or distributions by any Joint Venture other than a Specified
      Joint Venture to all holders of a class of Capital Stock of the Joint
      Venture permitted by clause (b)(1) above; provided that after giving
      effect to the dividends or distributions and any related transactions,
      the Joint Venture making the dividends or distributions to the holders
      is contractually entitled to receive, and receives within 180 days
      before or after the date of the dividends or distributions, directly or
      indirectly, an equivalent or larger cash payment from each holder,
      other than from a holder that is Lyondell or any Restricted

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     Subsidiary, or from an Affiliate of the holder, which cash payment has
     not been previously applied under this clause (p) to offset any other
     dividend or distribution by the Joint Venture to the holder and (y) the
     dividends or distributions do not exceed the holders' pro rata share of
     the Joint Venture's cash flows from operating activities, minus any non-
     cash charge to the extent that it represents an accrual of or reserve
     for cash expenditures in any future period or amortization of a prepaid
     cash expense in any future period.

   The board of directors of Lyondell may designate any Restricted Subsidiary
to be an Unrestricted Subsidiary if this designation would not cause a
Default. For purposes of making this determination, all outstanding
Investments by Lyondell and its Restricted Subsidiaries in the Subsidiary so
designated will be deemed to be Restricted Payments at the time of the
designation and will reduce the amount available for Restricted Payments under
the first paragraph of this covenant, except to the extent the Investments
were repaid in cash, and, in the case of a Joint Venture and any Subsidiary of
a Joint Venture designated as an Unrestricted Subsidiary on the first day that
it is a Subsidiary of Lyondell, and except to the extent that either:

  . the Investments were made after May 17, 1999; or

  . in the case of a Specified Joint Venture, the Investments were made
    before May 17, 1999.

All outstanding Investments deemed to be Restricted Payments as described in
the preceding sentence will be deemed to constitute Investments in an amount
equal to the fair market value of the Investments at the time of the
designation (as conclusively determined by the board of directors). The
designation will only be permitted if any Restricted Payment would be
permitted at the time and if the Restricted Subsidiary otherwise meets the
definition of an Unrestricted Subsidiary. In the case of any designation by
Lyondell of a Person as an Unrestricted Subsidiary on the first day that the
Person is a Subsidiary of Lyondell in accordance with the provisions of the
indentures, the designation will be deemed to have occurred for all purposes
of the indentures simultaneously with, and automatically upon, the Person
becoming a Subsidiary.

   Not later than the date of making any Restricted Payment, other than those
permitted by clauses (b)(1), (f), (j) and (n) above, and not later than the
120th day after making any Restricted Payment permitted by clause (f) above,
Lyondell will deliver to the Trustee an Officers' Certificate stating that the
Restricted Payment is permitted and stating the basis upon which the
calculations required by the covenant described under the caption "--
Restricted Payments" were computed.

 Incurrence of Indebtedness and Issuance of Preferred Stock

   On or after May 17, 1999:

  . Lyondell will not, and will not permit any of its Restricted Subsidiaries
    to, directly or indirectly, create, incur, issue, assume, Guarantee or
    otherwise become directly or indirectly liable, contingently or
    otherwise, with respect to (collectively, "incur") any Indebtedness
    (including Acquired Debt);

  . Lyondell will not, and will not permit any of its Restricted Subsidiaries
    to, issue any Disqualified Stock, including Acquired Disqualified Stock;
    and

  . Lyondell will not permit any of its Restricted Subsidiaries that are not
    Subsidiary Guarantors to issue any shares of Preferred Stock, including
    Acquired Preferred Stock;

provided, however, that Lyondell and the Subsidiary Guarantors may incur
Indebtedness, including Acquired Debt, and may issue shares of Disqualified
Stock, including Acquired Disqualified Stock, if the Fixed Charge Coverage
Ratio for Lyondell's most recently ended four full fiscal quarters for which
financial statements have been filed with the SEC under the covenant described
below under the caption "--Reports" immediately preceding the date on which
the additional Indebtedness is incurred or the Disqualified Stock is issued
would have been at least 2.0 to 1, determined on a pro forma basis (including
a pro forma application of the net proceeds therefrom), as if the additional
Indebtedness had been incurred or the Disqualified Stock had been issued, as
the case may be, at the beginning of the four-quarter period. Letters of
credit and bankers'

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acceptances will be deemed to have an aggregate principal amount of
Indebtedness equal to the maximum amount available under these instruments.

   The foregoing provisions will not apply to:

  (a) the incurrence by Lyondell of Indebtedness under the Existing Credit
      Facility and by its Subsidiaries under Guarantees of the Existing
      Credit Facility thereof in an aggregate principal amount at any time
      outstanding not to exceed an amount equal to $3.87 billion less the
      aggregate amount of all mandatory repayments, other than mandatory
      prepayments triggered solely by the issuance of Indebtedness or
      Preferred Stock of a Finance Subsidiary to refinance the Existing
      Credit Facility, applied to:

    (1) repay loans outstanding, other than revolving credit loans; or

    (2) permanently reduce the revolving credit commitments;

  (b) the incurrence by Lyondell and the Subsidiary Guarantors of
      Indebtedness represented by the Senior Secured Notes, the Senior
      Subordinated Notes and the Subsidiary Guarantees;

  (c) the incurrence by Lyondell and its Restricted Subsidiaries of Existing
      Indebtedness other than Indebtedness of the type described in clauses
      (a), (b) or (e) through (l) of this covenant;

  (d) the incurrence by Lyondell or any of its Restricted Subsidiaries of any
      Permitted Refinancing in exchange for, or the net proceeds of which are
      used to extend, refinance, renew, replace, defease or refund,
      Indebtedness that was permitted to be incurred under the Fixed Charge
      Coverage Ratio test described above or clauses (b) or (c) above or (m)
      or (n) below or this clause (d);

  (e) the incurrence by Lyondell or any of its Restricted Subsidiaries of
      intercompany Indebtedness between or among Lyondell and any of its
      Restricted Subsidiaries; provided, however, that:

    (1) if Lyondell or any Subsidiary Guarantor is the obligor on the
        Indebtedness, the Indebtedness is expressly subordinated to the
        prior payment in full in cash of all Obligations with respect to
        the new notes or the Subsidiary Guarantee, as the case may be; and

    (2)A.  any subsequent issuance or transfer of Equity Interests that
           results in any Indebtedness being held by a Person other than
           Lyondell or a Restricted Subsidiary; and

      B. any sale or other transfer of any Indebtedness to a Person that
         is not either Lyondell or a Restricted Subsidiary;

    will be deemed, in each case, to constitute an incurrence of
    Indebtedness by Lyondell or the Restricted Subsidiary, as the case may
    be;

  (f) the incurrence by Lyondell or any Restricted Subsidiary of Hedging
      Obligations that are incurred for the purpose of:

    (1) fixing or hedging interest rate or currency risk with respect to
        any fixed or floating rate Indebtedness that is permitted by the
        applicable indenture to be outstanding or any receivable or
        liability the payment of which is determined by reference to a
        foreign currency; provided that the notional principal amount of
        any Hedging Obligation does not exceed the principal amount of the
        Indebtedness to which the Hedging Obligation relates; or

    (2) fixing or hedging risk with respect to fluctuations in the cost of
        raw materials; provided that the obligation is entered into for
        valid business purposes other than speculative purposes, as
        determined by Lyondell's or the Restricted Subsidiary's principal
        financial officer in the exercise of his or her good faith business
        judgment;

  (g) the issuance by any of Lyondell's Restricted Subsidiaries of shares of
      Preferred Stock to Lyondell or a Wholly Owned Restricted Subsidiary;
      provided that:

    (1) any subsequent issuance or transfer of Equity Interests that
        results in the Preferred Stock being held by a Person other than
        Lyondell or a Wholly Owned Restricted Subsidiary; or

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    (2) the transfer or other disposition by Lyondell or a Wholly Owned
        Restricted Subsidiary of any shares to a Person other than Lyondell
        or a Wholly Owned Restricted Subsidiary will be deemed, in each
        case, to constitute an issuance of Preferred Stock by the
        Subsidiary on the date that is not permitted by this clause (g);

  (h) the incurrence by Lyondell or any of its Restricted Subsidiaries of
      Indebtedness represented by tender, bid, performance, government
      contract, surety or appeal bonds, standby letters of credit and
      warranty and contractual service obligations of like nature, trade
      letters of credit or documentary letters of credit, in each case to the
      extent incurred in the ordinary course of business of Lyondell or the
      Restricted Subsidiary and the incurrence by Lyondell of Indebtedness
      represented by letters of credit incurred in connection with the PBGC
      Settlement;

  (i) the incurrence by any Restricted Subsidiary of Lyondell of Indebtedness
      or the issuance by any Restricted Subsidiary of Preferred Stock, the
      aggregate principal amount or liquidation preference of which, together
      with all other Indebtedness and Preferred Stock of Lyondell's
      Restricted Subsidiaries at the time outstanding and incurred or issued
      in reliance upon this clause (i), does not exceed $50 million;

  (j) the issuance by any Finance Subsidiary of Preferred Stock with an
      aggregate liquidation preference not exceeding the amount of
      Indebtedness of Lyondell held by the Finance Subsidiary; provided that
      the Fixed Charge Coverage Ratio for Lyondell's most recently ended four
      full fiscal quarters for which financial statements have been filed
      with the SEC under the covenant described below under the caption "--
      Reports" immediately preceding the date on which the Preferred Stock is
      issued would have been at least 2.0 to 1.0, determined on a pro forma
      basis (including a pro forma application of the net proceeds therefrom)
      as if the Preferred Stock had been issued at the beginning of the four-
      quarter period;

  (k) the incurrence of Indebtedness by Foreign Subsidiaries in an aggregate
      principal amount (or accreted value, as applicable) at any time
      outstanding and incurred in reliance upon this clause (k) not to exceed
      $100 million;

  (l) the Guarantee by any Restricted Subsidiary of Indebtedness of Lyondell
      or a Restricted Subsidiary that was permitted to be incurred by another
      provision of this covenant;

  (m) Acquired Debt or Acquired Disqualified Stock; provided that the
      Indebtedness or Disqualified Stock was not incurred in connection with
      or in contemplation of the Person becoming a Restricted Subsidiary; and
      provided further that immediately after giving effect to the
      incurrence, the Fixed Charge Coverage Ratio for Lyondell's most
      recently ended four full fiscal quarters for which financial statements
      have been filed with the SEC under the covenant described below under
      the caption "--Reports" immediately preceding the date of the
      incurrence would have been at least 2.0 to 1.0, determined on a pro
      forma basis;

  (n) Indebtedness or Disqualified Stock of a Specified Joint Venture or a
      Subsidiary thereof existing at the time the Specified Joint Venture
      first becomes a Restricted Subsidiary; provided that the Indebtedness
      or Disqualified Stock was not incurred in connection with or in
      contemplation of the Specified Joint Venture becoming a Restricted
      Subsidiary; and provided further that immediately after giving effect
      to the Specified Joint Venture becoming a Restricted Subsidiary, the
      Fixed Charge Coverage Ratio for Lyondell's most recently ended four
      full fiscal quarters for which financial statements have been filed
      with the SEC under the covenant described below under the caption "--
      Reports" immediately preceding the date on which the Specified Joint
      Venture became a Restricted Subsidiary would have been, determined on a
      pro forma basis:

    (i) at least 2.0 to 1.0; or

    (ii) equal to or greater than it was immediately before the Specified
         Joint Venture becoming a Restricted Subsidiary;


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  (o) with respect to any Specified Joint Venture that becomes a Restricted
      Subsidiary, the incurrence by that Specified Joint Venture of
      Indebtedness under any revolving credit facility in an aggregate
      principal amount at any time outstanding not to exceed the aggregate
      principal amount of committed financing under all revolving credit
      facilities of the Specified Joint Venture as in effect on May 17, 1999;
      and

  (p) the incurrence by Lyondell or any Subsidiary Guarantor of Indebtedness
      in an aggregate principal amount or accreted value, as applicable, at
      any time outstanding and incurred in reliance on this clause (p) not to
      exceed $25 million.

   For purposes of determining compliance with this covenant, in the event that
an item of Indebtedness or Preferred Stock meets the criteria of more than one
of the categories of permitted Indebtedness described in clauses (a) through
(p) above or is entitled to be incurred under the first paragraph of this
covenant, Lyondell will, in its sole discretion, classify the item of
Indebtedness or Preferred Stock in any matter that complies with this covenant
and the Indebtedness or Preferred Stock will be treated as having been incurred
under the clauses or the first paragraph hereof, as the case may be, designated
by Lyondell. The amount of Indebtedness issued at a price which is less than
the principal amount of the Indebtedness will be equal to the amount of the
liability in respect of the Indebtedness determined in accordance with GAAP.

 Liens

   Senior Secured Notes

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, directly or indirectly, create, incur, assume or suffer to exist any Lien,
except Permitted Liens, on any asset now owned or hereafter acquired, or any
income or profits therefrom, unless all payments due under the Senior Secured
Note Indentures and the Senior Secured Notes or the Senior Secured Note
Guarantees are secured on an equal and ratable basis with the obligations so
secured or, if the obligations are subordinated by their terms to the Senior
Secured Notes or the Senior Secured Note Guarantees, before the obligations so
secured, until such time as the obligations are no longer so secured.

   Senior Subordinated Notes

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, directly or indirectly, create, incur, assume or suffer to exist any Lien,
except Permitted Liens, to secure Indebtedness or other obligations that are
pari passu with or subordinated by their terms in right of payment to the
Senior Subordinated Notes or the Senior Subordinated Note Guarantees on any
asset now owned or hereafter acquired, or any income or profits therefrom,
unless all payments due under the Senior Subordinated Note Indenture and the
Senior Subordinated Notes or the Senior Subordinated Note Guarantees are
secured on an equal and ratable basis with the obligations so secured or, if
the obligations are subordinated by their terms to the Senior Subordinated
Notes or the Senior Subordinated Note Guarantees, before the obligations so
secured, until such time as the obligations are no longer so secured.

 Dividend and Other Payment Restrictions Affecting Subsidiaries and Joint
 Ventures

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, directly or indirectly, create or otherwise cause or suffer to exist or
become effective any restriction on the ability of any Restricted Subsidiary
to:

  (a)(1) pay dividends or make any other distributions to Lyondell or any of
         its Restricted Subsidiaries on its Capital Stock, or with respect to
         any other interest or participation in, or measured by, its profits;
         or

     (2) pay any Indebtedness owed to Lyondell or any of its Restricted
         Subsidiaries;


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<PAGE>

  (b) make loans or advances to Lyondell or any of its Restricted
      Subsidiaries; or

  (c) transfer any of its properties or assets to Lyondell or any of its
      Restricted Subsidiaries;

except for those restrictions existing under or by reason of:

    (1) existing agreements as in effect on May 17, 1999;

    (2) Indebtedness permitted by the indentures to be incurred containing
        restrictions on the ability of Restricted Subsidiaries to
        consummate transactions of the types described in clauses (a), (b)
        or (c) above not materially more restrictive than those contained
        in the indentures;

    (3) the indentures;

    (4) applicable law;

    (5) existing restrictions with respect to a Person acquired by Lyondell
        or any of its Restricted Subsidiaries, except to the extent the
        restrictions were put in place in connection with or in
        contemplation of the acquisition, which restrictions are not
        applicable to any Person, or the properties or assets of any
        Person, other than the Person, or the property or assets of the
        Person, so acquired;

    (6) customary non-assignment provisions in leases and other agreements
        entered into in the ordinary course of business;

    (7) construction loans and purchase money obligations (including
        Capital Lease Obligations) for property acquired in the ordinary
        course of business that impose restrictions of the nature described
        in clause (c) above on the property so constructed or acquired;

    (8) in the case of clause (c) above, restrictions contained in security
        agreements or mortgages securing Indebtedness of a Restricted
        Subsidiary to the extent the restrictions restrict the transfer of
        the property subject to the security agreements or mortgages;

    (9) a Permitted Refinancing, provided that the restrictions contained
        in the agreements governing the Permitted Refinancing are not
        materially more restrictive, taken as a whole, than those contained
        in the agreements governing the Indebtedness being refinanced (as
        conclusively evidenced by a resolution of the board of directors);

    (10) customary restrictions on a Finance Subsidiary imposed in the
         Finance Subsidiary's organizational documents or by the terms of
         its Preferred Stock;

    (11) any restriction with respect to shares of Capital Stock of a
         Restricted Subsidiary imposed under an agreement entered into for
         the sale or disposition of the shares of Capital Stock or any
         restriction with respect to the assets of a Restricted Subsidiary
         imposed under an agreement entered into for the sale or
         disposition of the assets or all or substantially all the Capital
         Stock of the Restricted Subsidiary pending the closing of the sale
         or disposition;

    (12) in the case of any Restricted Subsidiary that is a Joint Venture,
         customary restrictions on the Restricted Subsidiary contained in
         its joint venture agreement, which restrictions are consistent
         with the past practice of Lyondell and its Restricted Subsidiaries
         (as conclusively evidenced by a resolution of the board of
         directors);

    (13) existing restrictions with respect to a Specified Joint Venture or
         the property or assets of the Specified Joint Venture or a
         Subsidiary of a Specified Joint Venture or the property or assets
         of the Subsidiary, in each case, at the time the Specified Joint
         Venture first becomes a Restricted Subsidiary, except to the
         extent the restrictions were put in place in connection with or in
         contemplation of the Specified Joint Venture becoming a Restricted
         Subsidiary, which restrictions are not applicable to any Person,
         or the properties or assets of any Person, other than

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       the Specified Joint Venture or the property or assets of the
       Specified Joint Venture or a Subsidiary of the Specified Joint
       Venture or the property or assets of the Subsidiary; and

    (14) the Existing Credit Facility and related documentation as the same
         is in effect on May 17, 1999 and as amended, modified, extended,
         renewed, refunded, refinanced, restated or replaced from time to
         time; provided that the Existing Credit Facility and related
         documentation as so amended, modified, extended, reviewed,
         refunded, refinanced, restated or replaced is not materially more
         restrictive, taken as a whole, as to the matters enumerated above
         than the Existing Credit Facility and related documentation as in
         effect on May 17, 1999 (as conclusively evidenced by a resolution
         of the board of directors).

   For purposes of determining compliance with this covenant, in the event that
a restriction meets the criteria of more than one of the categories of
permitted restrictions described in clauses (1) through (14) above, Lyondell
will, in its sole discretion, classify the restriction in any matter that
complies with this covenant and the restriction will be treated as existing
under the clauses designated by Lyondell.

   In addition, Lyondell will use its best efforts consistent with its
contractual obligations and fiduciary duties to any Joint Venture, in each
case, as in effect on May 17, 1999 not to permit any of its Joint Ventures that
are not Restricted Subsidiaries to, directly or indirectly, create or otherwise
cause or suffer to exist or become effective any restriction on the ability of
the Joint Venture to:

  (a)(1) pay dividends or make any other distributions to Lyondell or any of
         its Restricted Subsidiaries on its Capital Stock or with respect to
         any other interest or participation in, or measured by, its profits;
         or

    (2) pay any Indebtedness owed to Lyondell or any of its Restricted
        Subsidiaries;

  (b) make loans or advances to Lyondell or any of its Restricted
      Subsidiaries; or

   (c) transfer any of its properties or assets to Lyondell or any of its
Restricted Subsidiaries;

except for those restrictions existing under or by reason of:

  (a) the Joint Venture's joint venture agreement or its credit facility
      (provided that in each case the restrictions are consistent with the
      past practice of Lyondell);

  (b) in the case of any Joint Venture existing on May 17, 1999, its existing
      agreements as in effect on the date of the applicable indenture and as
      amended, modified, extended, restated or replaced from time to time;
      provided that no amendment, modification, extension, restatement or
      replacement results in agreements that are materially more restrictive,
      taken as a whole, as to the matters enumerated above than the existing
      agreements as in effect on the date of the applicable indenture (as
      conclusively evidenced by a resolution of the board of directors);

  (c) in the case of LYONDELL-CITGO Refining, any instrument governing its
      Indebtedness; and

  (d) the restrictions described in clauses (4), (5), (6), (7), (8), (10),
      (11) and (14) of the first sentence of this covenant (assuming that
      references in clauses (8) and (11) to Restricted Subsidiary were
      references to a Joint Venture).

 Sale and Leaseback Transactions

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, enter into any Sale and Leaseback Transaction; provided that Lyondell or
any Restricted Subsidiary may enter into a Sale and Leaseback Transaction if:

  (a) Lyondell or the Restricted Subsidiary, as the case may be, could have:

    (1) incurred Indebtedness in an amount equal to the Attributable Debt
        relating to the Sale and Leaseback Transaction under the Fixed
        Charge Coverage Ratio test described in the first

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<PAGE>

       paragraph of the covenant described under the caption "--Incurrence
       of Indebtedness and Issuance of Preferred Stock" (whether or not the
       covenant has ceased to be otherwise in effect as described below
       under "Limitation on Applicability of Covenants in Notes Rated
       Investment Grade"); and

    (2) incurred a Lien to secure such Indebtedness under the covenant
        described under the caption "--Liens" without securing the new
        notes; and

  (b) the gross cash proceeds of the Sale and Leaseback Transaction are at
      least equal to the fair market value (as conclusively determined by the
      board of directors) of the property that is the subject of the Sale and
      Leaseback Transaction.

 Line of Business

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, engage in any business other than Permitted Businesses, except to the
extent as would not be material to Lyondell and its Subsidiaries taken as a
whole.

 Merger, Consolidation or Sale of Assets

   Lyondell may not consolidate or merge with or into, whether or not Lyondell
is the surviving corporation, or sell, assign, transfer, convey or otherwise
dispose of all or substantially all its assets in one or more related
transactions, to another corporation, Person or entity unless:

  (1) Lyondell is the surviving corporation or the entity or the Person
      formed by or surviving any consolidation or merger (if other than
      Lyondell) or to which the sale, assignment, transfer, conveyance or
      other disposition will have been made is a corporation organized or
      existing under the laws of the United States, any state thereof or the
      District of Columbia;

  (2) the corporation formed by or surviving any consolidation or merger (if
      other than Lyondell) or the corporation to which the sale, assignment,
      transfer, lease, conveyance or other disposition will have been made
      assumes all the obligations of Lyondell under the new notes issued
      under the applicable indenture and the applicable indenture under a
      supplemental indenture in form reasonably satisfactory to the Trustee
      under that indenture;

  (3) immediately after the transaction no Default or Event of Default
      exists; and

  (4) Lyondell or the entity or Person formed by or surviving any
      consolidation or merger (if other than Lyondell), or to which the sale,
      assignment, transfer, lease, conveyance or other disposition will have
      been made:

    (a) will have a Consolidated Net Worth immediately after the
        transaction equal to or greater than the Consolidated Net Worth of
        Lyondell immediately preceding the transaction; and

    (b) except with respect to a consolidation or merger of Lyondell with
        or into a Person that has no outstanding Indebtedness, will, at the
        time of the transaction and after giving pro forma effect thereto
        as if the transaction had occurred at the beginning of the
        applicable four-quarter period, be permitted to incur at least
        $1.00 of additional Indebtedness under the Fixed Charge Coverage
        Ratio test described in the first paragraph of the covenant in the
        applicable indenture described above under the caption "--
        Incurrence of Indebtedness and Issuance of Preferred Stock."

The foregoing restrictions will not prohibit the merger or consolidation of a
Wholly Owned Restricted Subsidiary with Lyondell; provided that, in connection
with the merger or consolidation, no consideration other than common stock in
the surviving Person or Lyondell will be issued or distributed to the
stockholders of Lyondell.


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<PAGE>

   The sale, assignment, transfer, lease, conveyance or other disposition by
Lyondell of all or substantially all its property or assets taken as a whole to
one or more of Lyondell's Subsidiaries will not relieve Lyondell from its
obligations under the indentures and the new notes. In addition, Lyondell may
not lease all or substantially all its assets to another Person.

 Transactions with Affiliates

   Lyondell will not, and will not permit any of its Restricted Subsidiaries
to, sell, lease, transfer or otherwise dispose of any of its properties or
assets to, or purchase any property or assets from, or enter into or make any
contract, agreement, understanding, loan, advance or Guarantee with, or for the
benefit of, any Affiliate (each of the foregoing, an "Affiliate Transaction"),
unless:

  (1) the Affiliate Transaction is on an arms-length basis; and

  (2) Lyondell delivers to the Trustee:

    (a) with respect to any Affiliate Transaction involving aggregate
        consideration in excess of $10 million, a resolution of the board
        of directors described in an Officers' Certificate certifying that
        the Affiliate Transaction complies with clause (1) above and that
        the Affiliate Transaction has been approved by a majority of the
        disinterested members of the board of directors; and

    (b) with respect to any Affiliate Transaction involving aggregate
        consideration in excess of $25 million, an opinion as to the
        fairness to Lyondell or the Restricted Subsidiary of the Affiliate
        Transaction from a financial point of view issued by an investment
        banking firm of national standing;

provided that:

  (1) transactions or payments under any employment arrangements or employee,
      officer or director benefit plans or arrangements entered into by
      Lyondell or any of its Restricted Subsidiaries in the ordinary course
      of business;

  (2) transactions between or among Lyondell and/or its Restricted
      Subsidiaries;

  (3) any Restricted Payment permitted by the provisions of the applicable
      indenture described under the caption "--Restricted Payments," of the
      type described in clause (1) or (2) of the first paragraph under this
      caption;

  (4) customary loans, advances, fees and compensation paid to, and indemnity
      provided on behalf of, officers, directors, employees or consultants of
      Lyondell or any of its Restricted Subsidiaries;

  (5) transactions entered into on an arms-length basis in the ordinary
      course of business between Lyondell or any of its Restricted
      Subsidiaries and any Joint Venture;

  (6) sales, including a sale in exchange for a promissory note of or Equity
      Interest in an Accounts Receivable Subsidiary, of accounts receivable
      and the provision of billing, collection and other services in
      connection therewith, in each case, to an Accounts Receivable
      Subsidiary in connection with any Receivables Facility; and

  (7) transactions under any contract or agreement in effect on the date of
      the applicable indenture as the same may be amended, modified or
      replaced from time to time so long as any contract or agreement as so
      amended, modified or replaced is, taken as a whole, no less favorable
      to Lyondell and its Restricted Subsidiaries than the contract or
      agreement as in effect on the date of the applicable indenture (as
      conclusively evidenced by a resolution of the board of directors);


                                       97
<PAGE>

in each case, will not be deemed to be Affiliate Transactions and therefore not
subject to the requirements of clauses (1) and (2) of the initial paragraph
above.

 Limitations on Issuances of Guarantees of Indebtedness by Subsidiaries

   Lyondell will not permit any Restricted Subsidiary that is not a Subsidiary
Guarantor, directly or indirectly, to Guarantee or secure the payment of any
other Indebtedness of Lyondell or any of its Restricted Subsidiaries, except
Indebtedness of the Restricted Subsidiary or a Restricted Subsidiary of the
Restricted Subsidiary, unless the Restricted Subsidiary:

  (1) simultaneously executes and delivers a supplemental indenture to the
      applicable indenture providing for the Guarantee of the payment of the
      notes issued under the applicable indenture by the Restricted
      Subsidiary; and

  (2) waives and agrees not in any manner whatsoever to claim or take the
      benefit or advantage of, either:

    (a) any right to receive payment by way of subrogation against Lyondell
        or against any direct or indirect security for the obligation, or
        any right to be reimbursed, indemnified or exonerated by or for the
        account of Lyondell in respect thereof; or

    (b) any right to receive payment, in the nature of contribution or for
        any other reason, from any other Subsidiary Guarantor with respect
        to the payment, in each case so long as any amount payable by
        Lyondell under the applicable indenture or under the new notes
        remains unpaid;

provided that this paragraph will not be applicable to (x) any Guarantee of any
Restricted Subsidiary that existed at the time the Person became a Restricted
Subsidiary and was not incurred in connection with, or in contemplation of, the
Person becoming a Restricted Subsidiary, (y) Guarantees of Indebtedness of a
Restricted Subsidiary that is a Foreign Subsidiary by a Restricted Subsidiary
that is a Foreign Subsidiary or (z) the granting of Liens by a Joint Venture
Subsidiary to secure Indebtedness under the Existing Credit Facility and the
Senior Secured Notes.

   In the case of the Senior Subordinated Notes, if the new notes are
subordinated by their terms to the Guaranteed Indebtedness, then the Subsidiary
Guarantee will be subordinated to the guarantee of the Guaranteed Indebtedness.
If the new notes are pari passu with the Guaranteed Indebtedness, then the
Subsidiary Guarantee will be pari passu with, or senior to, the guarantee of
the Guaranteed Indebtedness. If the new notes are senior to the Guaranteed
Indebtedness, then the Subsidiary Guarantee will be senior to the guarantee of
the Guaranteed Indebtedness at least to the extent that the new notes are
senior to the Guaranteed Indebtedness.

Notwithstanding the foregoing, each Subsidiary Guarantee by a Restricted
Subsidiary will provide by its terms that it will be automatically and
unconditionally released and discharged upon:

  (1) any sale, exchange or transfer, to any Person not an Affiliate of
      Lyondell, of all Lyondell's and each Restricted Subsidiary's Capital
      Stock in the Restricted Subsidiary, which sale, exchange or transfer is
      not prohibited by the indentures;

  (2) the release or discharge of the Guarantee which resulted in the
      creation of the Subsidiary Guarantee or, in the case of the Subsidiary
      Guarantee of Lyondell Nederland issued on May 17, 1999, the release or
      discharge of its Guarantee of Indebtedness under the Existing Credit
      Facility, except a discharge or release by or as a result of payment
      under the Guarantee; and

  (3) the designation of the Restricted Subsidiary as an Unrestricted
      Subsidiary in accordance with the terms of the indentures.


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<PAGE>

 Accounts Receivable Facilities

   Lyondell may, and any of its Restricted Subsidiaries may, sell at any time
and from time to time, accounts receivable to any Accounts Receivable
Subsidiary. However, the aggregate consideration received in each sale must be
at least equal to the aggregate fair market value of the receivables sold. The
term "sell" includes a sale in exchange for a promissory note of or Equity
Interest in the Accounts Receivable Subsidiary.

 No Amendment to Subordination Provisions

   Under the Senior Secured Note Indentures, Lyondell may not amend, modify or
alter the Senior Subordinated Note Indenture in any way that would:

  (1) increase the principal of, advance the final maturity date of or
      shorten the Weighted Average Life to Maturity of any Senior
      Subordinated Notes such that the final maturity date of the Senior
      Subordinated Notes is earlier than the 91st day following the final
      maturity date of the Senior Secured Notes; or

  (2) amend the subordination provisions of the Senior Subordinated Note
      Indenture or any of the defined terms used in the Senior Subordinated
      Note Indenture in a manner that would be adverse to the holders of the
      Senior Secured Notes.

 No Senior Subordinated Debt

   Under the Senior Subordinated Note Indenture, Lyondell and the Subsidiary
Guarantors each may not incur any Indebtedness that under its terms is
subordinate or junior in right of payment to any Senior Indebtedness and senior
in any respect in right of payment to the Senior Subordinated Notes or the
Senior Subordinated Note Guarantees. However, this limitation will not apply to
distinctions between categories of Senior Indebtedness of Lyondell or a
Subsidiary Guarantor that exist by reason of any Liens or Guarantees arising or
created in respect of some but not all the Senior Indebtedness.

Limitation of Applicability of Covenants if New Notes Rated Investment Grade

   Notwithstanding the covenants summarized above, Lyondell's and its
Restricted Subsidiaries' obligations to comply with the covenants described
under the captions "Restrictive Covenants--Restricted Payments," "--Incurrence
of Indebtedness and Issuance of Preferred Stock," "--Dividend and other Payment
Restrictions Affecting Subsidiaries," "--Line of Business," "--Limitation on
Issuance of Guarantees of Indebtedness by Subsidiaries," "--Transactions with
Affiliates," "--Accounts Receivable Facilities" and "Repurchase at the Option
of the Holders--Asset Sales" will terminate and cease to have any further
effect from and after the first date when the new notes issued under the
applicable indenture are rated Investment Grade.

Reports

   Whether or not required by the rules and regulations of the SEC, so long as
any new notes issued thereunder are outstanding, Lyondell will furnish to each
Trustee and the holders of the new notes:

  . all quarterly and annual financial information that would be required to
    be contained in a filing with the SEC on Forms 10-Q and 10-K if Lyondell
    were required to file those forms, including a "Management's Discussion
    and Analysis of Financial Condition and Results of Operations" and, with
    respect to the annual information only, a report thereon by Lyondell's
    certified independent accountants; and

  . all current reports that would be required to be filed with the SEC on
    Form 8-K if Lyondell were required to file those reports.

   In addition, whether or not required by the rules and regulations of the
SEC, Lyondell will file a copy of all information and reports with the SEC for
public availability and make this information available to

                                       99
<PAGE>

securities analysts and prospective investors upon request. In addition,
Lyondell has agreed that, for so long as any new notes remain outstanding, it
will furnish to the holders, securities analysts and prospective investors,
upon their request, the information required to be delivered under Rule
144A(d)(4) under the Securities Act.

Events of Default and Remedies

   Each of the following constitutes an Event of Default with respect to the
new notes:

  (1) default for 30 days in the payment when due of interest or liquidated
      damages, whether or not prohibited by the subordination provisions of
      the Senior Subordinated Note Indenture;

  (2) default in payment when due of the principal of or premium, if any, on
      the new notes, at maturity or otherwise, whether or not prohibited by
      the subordination provisions of the Senior Subordinated Note Indenture;

  (3) failure by Lyondell to comply with the provisions described under the
      captions "--Repurchase at the Option of Holders--Change of Control,"
      "--Asset Sales" or "--Restrictive Covenants--Merger, Consolidation or
      Sale of Assets";

  (4) failure by Lyondell for 60 days after notice by the Trustee or holders
      of at least 25% in principal amount of the new notes then outstanding
      and issued to comply with any of its other agreements in the applicable
      indenture or the new notes;

  (5) any default occurs under any mortgage, indenture or instrument under
      which there may be issued or by which there may be secured or evidenced
      any Indebtedness for money borrowed by Lyondell or any of its
      Significant Subsidiaries or any Indebtedness for money borrowed
      Guaranteed by Lyondell or any of its Significant Subsidiaries if
      Lyondell or a Significant Subsidiary does not perform its payment
      obligations under the Guarantee within any grace period provided for in
      the documentation governing the Guarantee and, whether the Indebtedness
      or Guarantee exists on the date of the applicable indenture or is
      thereafter created, which default:

    (a) constitutes a Payment Default; or

    (b) results in the acceleration of the Indebtedness before its Stated
        Maturity;

    and in each case, the principal amount of any Indebtedness, together
    with the principal amount of any other Indebtedness under which there
    has been a Payment Default or that has been so accelerated, aggregates
    $50 million or more;

  (6) failure by Lyondell or any of its Significant Subsidiaries to pay a
      final judgment or final judgments aggregating in excess of $50 million,
      which judgment or judgments are not paid, discharged or stayed for a
      period of 60 days;

  (7) specified events of bankruptcy or insolvency with respect to Lyondell
      or any of its Significant Subsidiaries;

  (8) except as permitted by the applicable indenture:

    (a) any Subsidiary Guarantee will be held in any judicial proceeding to
        be unenforceable or invalid or will cease for any reason to be in
        full force and effect or any Subsidiary Guarantor; or

    (b) any Person acting on behalf of any Subsidiary Guarantor, will deny
        or disaffirm its obligations under the Subsidiary Guarantees; and

  (9) in the case of the Senior Secured Notes:

    (a) any of the Security Documents ceases to be in full force and
        effect;

    (b) any of the Security Documents ceases to give the holders of the
        Senior Secured Notes any of the Liens purported to be created
        thereby;

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<PAGE>

    (c) any of the Security Documents is declared null and void; or

    (d) Lyondell or any Restricted Subsidiary denies in writing that it has
        any further liability under any Security Document or gives written
        notice to that effect;

    However, it will not be an Event of Default if the event described in
    clause (9) above occurs in accordance with the terms of the applicable
    indenture or the terms of the Existing Credit Facility or the Security
    Documents, including the cessation of effectiveness of any Security
    Document in connection with the release of all collateral covered
    thereby according to the terms of the applicable indenture, the
    Existing Credit Facility and the Security Document, or if an event
    occurs that is waived by the requisite lenders under the Existing
    Credit Facility and, after that waiver, Lyondell is in compliance with
    the covenant described under "--Security." However, if a failure of the
    sort described in this clause (9) is susceptible of cure, no Event of
    Default will arise under this clause (9) with respect thereto until 30
    days after notice of the failure will have been given to Lyondell by
    the applicable Senior Secured Note Trustee or holders of at least 25%
    in principal amount of the then outstanding notes issued under the
    applicable indenture.

   If an Event of Default other than an Event of Default specified in clause
(7) above that occurs with respect to Lyondell or any Subsidiary Guarantor
occurs and is continuing under any indenture, the Trustee or the holders of at
least 25% in aggregate principal amount of the Series A Senior Secured Notes,
or Senior Subordinated Notes, as the case may be, then outstanding, by written
notice to Lyondell and to the applicable Trustee if the notice is given by the
holders (the "Acceleration Notice"), may, and the applicable Trustee at the
request of the holders will, declare the principal of and premium, if any, and
accrued interest and liquidated damages, if any, on the new notes to be
immediately due and payable. Upon a declaration of acceleration, the principal,
premium, if any, and accrued interest and liquidated damages, if any, will be
immediately due and payable. If an Event of Default specified in clause (7)
above occurs with respect to Lyondell or any Subsidiary Guarantor, the
principal of and premium, if any, and accrued interest and liquidated damages,
if any, on the new notes then outstanding will ipso facto become and be
immediately due and payable without any declaration or other act on the part of
the Trustee or any holder.

   The holders of at least a majority in principal amount of the then
outstanding Series A Senior Secured Notes, Series B Senior Secured Notes or
Senior Subordinated Notes, as the case may be, by written notice to Lyondell
and to the applicable Trustee, may waive all past defaults and rescind and
annul a declaration of acceleration and its consequences under the Series A
Senior Secured Notes, Series B Senior Secured Notes or Senior Subordinated
Notes, as the case may be, if:

  (1) all existing Events of Default, other than the nonpayment of the
      principal of and premium, if any, and interest and liquidated damages,
      if any, on the new notes that have become due solely by the declaration
      of acceleration, have been cured or waived; and

  (2) the rescission would not conflict with any judgment or decree of a
      court of competent jurisdiction.

   For information as to the waiver of defaults, see "--Modification and
Waiver."

   The holders of at least a majority in aggregate principal amount of the then
outstanding Series A Senior Secured Notes, Series B Senior Secured Notes or
Senior Subordinated Notes, as the case may be, may direct the time, method and
place of conducting any proceeding for any remedy available to the applicable
Trustee or exercising any trust or power conferred on the applicable Trustee.
However, the Trustee may refuse to follow any direction that conflicts with law
or the applicable indenture, that may involve the Trustee in personal
liability, or that the Trustee determines in good faith may be unduly
prejudicial to the rights of holders of the Series A Senior Secured Notes,
Series B Senior Secured Notes or Senior Subordinated Notes, as the case may be,
not joining in the giving of the direction and may take any other action it
deems proper that is not inconsistent with any direction received from holders
of the Series A Senior Secured Notes, Series B Senior Secured Notes or Senior
Subordinated Notes, as the case may be.


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<PAGE>

   A holder may not pursue any remedy with respect to the applicable indenture
or the Series A Senior Secured Notes, Series B Senior Secured Notes or Senior
Subordinated Notes, as the case may be, unless:

  (1) the holder gives the Trustee written notice of a continuing Event of
      Default;

  (2) the holders of at least 25% in aggregate principal amount of
      outstanding Series A Senior Secured Notes, Series B Senior Secured
      Notes or Senior Subordinated Notes, as the case may be, make a written
      request to the Trustee to pursue the remedy;

  (3) the holder or holders offer the applicable Trustee indemnity
      satisfactory to the Trustee against any costs, liability or expense;

  (4) the Trustee does not comply with the request within 60 days after
      receipt of the request and the offer of indemnity; and

  (5) during the 60-day period, the holders of at least a majority in
      aggregate principal amount of the outstanding Series A Senior Secured
      Notes, Series B Senior Secured Notes or Senior Subordinated Notes, as
      the case may be, do not give the Trustee a direction that is
      inconsistent with the request.

However, these limitations do not apply to the right of any holder of a Series
A Senior Secured Note, Series B Senior Secured Note or Senior Subordinated
Note, as the case may be, to receive payment of the principal of or premium, if
any, interest or liquidated damages, if any, on the new notes or to bring suit
for the enforcement of the payment, on or after the due date expressed in the
new notes, which right will not be impaired or affected without the consent of
the holder.

   Specified officers of Lyondell must certify, on or before a date not more
than 120 days after the end of each fiscal year, that they have conducted or
supervised a review of the activities of Lyondell and its Restricted
Subsidiaries and Lyondell's and its Restricted Subsidiaries' performance under
the applicable indenture and that, to the best of the officer's knowledge,
based upon this review, Lyondell has fulfilled all obligations under the
indenture. If there has been a default in the fulfillment of any obligation
under the applicable indenture, the certifying officers must specify each
default and the nature and status of any default. Lyondell will also be
obligated to notify the applicable Trustee promptly of any default or defaults
in the performance of any covenants or agreements under any indenture.

Modification and Waiver

   Modifications and amendments of the indentures may be made by Lyondell, the
Subsidiary Guarantors and the Trustee with the consent of the holders of not
less than a majority in aggregate principal amount of the then outstanding
Series A Senior Secured Notes, Series B Senior Secured Notes or Senior
Subordinated Notes, as the case may be. However, without the consent of each
holder affected thereby, no modification or amendment may:

  (1) change the Stated Maturity of the principal of, or any installment of
      interest on, any new note;

  (2) reduce the principal amount of or premium, if any, or interest or
      liquidated damages, if any, on any new note;

  (3) reduce any amount payable on redemption of the new notes or upon the
      occurrence of an Event of Default or reduce the Change of Control
      Payment or the amount to be paid in connection with an Asset Sale
      Offer;

  (4) change the place or currency of payment of principal of or premium, if
      any, or interest or liquidated damages, if any, on any new note;

  (5) impair the right to institute suit for the enforcement of any payment
      on or after the Stated Maturity or, in the case of a redemption, on or
      after the Redemption Date, of any new note;


                                      102
<PAGE>

  (6) reduce the above-stated percentage of the then outstanding notes the
      consent of whose holders is necessary to modify or amend an indenture;

  (7) waive a default in the payment of principal of or premium, if any, or
      interest or liquidated damages, if any, on the new notes, except as
      stated in the penultimate sentence of the second paragraph under the
      caption "--Events of Default and Remedies";

  (8) reduce the percentage or aggregate principal amount of the then
      outstanding notes the consent of whose holders is necessary for waiver
      of compliance with provisions of an indenture or for waiver of
      defaults;

  (9) modify or change any provision of an indenture affecting the ranking of
      the new notes or the Subsidiary Guarantees in a manner adverse to the
      holders of the new notes;

  (10) release any Subsidiary Guarantor from any of its obligations under its
       Subsidiary Guarantee or an indenture other than in accordance with the
       provisions of the indenture, or amend or modify any provision relating
       to the release; or

  (11) in the case of the Senior Secured Notes Indentures, directly or
       indirectly release the Liens created by the Security Documents on all
       or substantially all the Collateral, other than in accordance with the
       terms of the Existing Credit Facility or the Security Documents or
       with the consent of the requisite lenders under the Existing Credit
       Facility if, after the consent, Lyondell is in compliance with the
       covenant described under "--Security".

   Neither Lyondell nor any of its Subsidiaries or Affiliates will, directly or
indirectly, pay or cause to be paid any consideration, whether by way of
interest, fee or otherwise, to any holder of any new notes for or as an
inducement to any consent, waiver or amendment of any of the terms or
provisions of any indenture or the new notes issued thereunder unless the
consideration is offered to be paid or agreed to be paid to all holders of the
new notes that consent, waive or agree to amend the term or provision in the
time frame stated in the solicitation documents relating to the consent, waiver
or agreement.

Defeasance

   Defeasance and Discharge. Lyondell will be deemed to have paid and will be
discharged from any and all obligations in respect of the new notes issued
under any indenture, and any Subsidiary Guarantor will be discharged from any
and all obligations in respect of its Subsidiary Guarantee on the 123rd day
after the deposit referred to below. Thereafter the provisions of the
applicable indenture will no longer be in effect with respect to the new notes
and the Subsidiary Guarantees except for, among other matters, obligations to
register the transfer or exchange of the new notes, to replace stolen, lost or
mutilated notes, to maintain paying agencies and to hold monies for payment in
trust, if, among other things:

  (1) Lyondell has deposited with the Trustee, in trust, money and/or U.S.
      Government obligations that through the payment of interest and
      principal in respect of which obligations in accordance with their
      terms will provide money in an amount sufficient to pay the principal
      of and premium, if any, and accrued interest and liquidated damages, if
      any, on the new notes on the Stated Maturity of the payments in
      accordance with the terms of the applicable indenture and the new notes
      to redemption or maturity, as the case may be;

  (2) Lyondell has delivered to the Trustee:

    (a) either (x) an opinion of counsel to the effect that holders will
        not recognize income, gain or loss for federal income tax purposes
        as a result of Lyondell's exercise of its option under this
        "Defeasance" provision and will be subject to federal income tax on
        the same amount and in the same manner and at the same times as
        would have been the case if the deposit, defeasance and discharge
        had not occurred, which opinion of counsel must be based upon and
        accompanied by a copy of a ruling of the Internal Revenue Service
        to the same effect unless there has been a

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<PAGE>

       change in applicable federal income tax law after May 17, 1999 such
       that a ruling is no longer required or (y) a ruling directed to the
       Trustee or Lyondell received from the Internal Revenue Service to the
       same effect as the aforementioned opinion of counsel; and

    (b) an opinion of counsel to the effect that the creation of the
        defeasance trust does not violate the Investment Company Act of 1940
        and after the passage of 123 days following the deposit, the trust
        fund will not be subject to the effect of Section 547 of the United
        States Bankruptcy Code or Section 15 of the New York Debtor and
        Creditor Law, or any comparable provision or applicable law;

  (3) immediately after giving effect to the deposit on a pro forma basis, no
      Event of Default, or event that after the giving of notice or lapse of
      time or both would become an Event of Default, will have occurred and
      be continuing on the date of the deposit or during the period ending on
      the 123rd day after the date of the deposit, and the deposit will not
      result in a breach or violation of, or constitute a default under, any
      other agreement or instrument to which Lyondell is a party or by which
      Lyondell is bound; and

  (4) if at such time the new notes are listed on a national securities
      exchange, Lyondell has delivered to the Trustee an opinion of counsel
      to the effect that the new notes will not be delisted as a result of
      the deposit, defeasance and discharge.

   Defeasance of Covenants and Events of Default. The provisions of an
indenture will no longer be in effect with respect to the provision described
under "--Security," clause (4) under "--Merger, Consolidation and Sale of
Assets" and all the covenants described under "--Restrictive Covenants," and
clauses (3) and (4) under "--Events of Default" with respect to the covenants
and clause (4) under "--Merger, Consolidation and Sale of Assets," and clauses
(5), (6) and (9) under "--Events of Default" will be deemed not to be Events
of Default, upon, among other things, the deposit with the applicable Trustee,
in trust, of money and/or U.S. Government obligations that through the payment
of interest and principal in respect of which obligations in accordance with
their terms will provide money in an amount sufficient to pay the principal of
and premium, if any, and accrued interest and liquidated damages, if any, on
the new notes on the Stated Maturity of the payments in accordance with the
terms of the applicable indenture and the new notes, the satisfaction of the
provisions described in clauses (2)(b), (3) and (4) of the preceding paragraph
and the delivery by Lyondell to the Trustee of an opinion of counsel to the
effect that, among other things, the holders will not recognize income, gain
or loss for federal income tax purposes as a result of the deposit and
defeasance of some covenants and Events of Default and will be subject to
federal income tax on the same amount and in the same manner and at the same
times as would have been the case if the deposit and defeasance had not
occurred.

   Defeasance and Other Events of Default. In the event Lyondell exercises its
option to omit compliance with some covenants and provisions of any indenture
with respect to the new notes issued thereunder as described in the
immediately preceding paragraph and the new notes are declared due and payable
because of the occurrence of an Event of Default that remains applicable, the
amount of money and/or U.S. Government obligations on deposit with the
applicable Trustee will be sufficient to pay amounts due on the new notes at
the time of their Stated Maturity but may not be sufficient to pay amounts due
on the new notes at the time of the acceleration resulting from the Event of
Default. However, Lyondell will remain liable for these payments.

No Personal Liability of Directors, Officers, Employees and Stockholders

   No director, officer, employee, incorporator, stockholder or other holder
of Equity Interests of Lyondell or the Subsidiary Guarantors, as such, will
have any liability for any obligations of Lyondell or the Subsidiary
Guarantors under the new notes, the Subsidiary Guarantees, the indentures or
for any claim based on, in respect of, or by reason of, the obligations or
their creation. Each holder of new notes by accepting a new note waives and
releases all liability with respect to these persons. The waiver and release
are part of the consideration for the issuance of the new notes. The waiver
may not be effective to waive liabilities under the federal securities laws
and it is the view of the SEC that this waiver is against public policy.

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Transfer and Exchange

   A holder may transfer or exchange new notes in accordance with the
indentures. The Registrar and the Trustees may require a holder, among other
things, to furnish appropriate endorsements and transfer documents and Lyondell
may require a holder to pay any taxes and fees required by law or permitted by
the indentures.

   The registered holder of a new note will be treated as the owner of the new
note for all purposes.

Concerning the Trustee

   Each indenture contains limitations on the rights of the applicable Trustee,
should it become a creditor of Lyondell, to obtain payment of claims in some
cases, or to realize on some property received in respect of any claim as
security or otherwise. Each Trustee will be permitted to engage in other
transactions. However, if a Trustee acquires any conflicting interest it must
eliminate the conflict within 90 days, apply to the SEC for permission to
continue or resign.

   The holders of a majority in principal amount of the then outstanding notes
issued under an indenture will have the right to direct the time, method and
place of conducting any proceeding for exercising any remedy available to the
applicable Trustee, subject to some exceptions. In case an Event of Default
occurs (which will not be cured), the Trustee will be required, in the exercise
of its power, to use the degree of care of a prudent man in the conduct of his
own affairs. Subject to these provisions, the Trustees will not be under any
obligation to exercise any rights or powers under the indentures at the request
of any holder of new notes, unless the holder will have offered to the
applicable Trustee security and indemnity satisfactory to it against any loss,
liability or expense.

   The Bank of New York will act as trustee for each series of the new notes
and is also the transfer agent for Lyondell's stock and a lender under its
credit facility.

Definitions

   We have provided below a summary of capitalized terms used in this summary
description of the new notes. Please refer to the indentures for full
definitions of these terms as well as any other capitalized terms used in this
prospectus for which no definition is provided.

   "Accounts Receivable Subsidiary" means any Wholly Owned Subsidiary of
Lyondell:

  (1) which is formed solely for the purpose of, and which engages in no
      activities other than activities in connection with, financing accounts
      receivable of Lyondell and/or its Restricted Subsidiaries;

  (2) which is designated by Lyondell as an Accounts Receivables Subsidiary
      under an Officers' Certificate delivered to the Trustee;

  (3) no portion of Indebtedness or any other obligation, contingent or
      otherwise, of which is at any time recourse to or obligates Lyondell or
      any Restricted Subsidiary in any way, or subjects any property or asset
      of Lyondell or any Restricted Subsidiary, directly or indirectly,
      contingently or otherwise, to the satisfaction thereof, other than
      under:

    (a) representations, warranties and covenants or any indemnity with
        respect to those representations, warranties and covenants entered
        into in the ordinary course of business in connection with the sale
        of accounts receivable to the Accounts Receivable Subsidiary; or

    (b) any guarantee of any accounts receivable financing by Lyondell or
        any Restricted Subsidiary that is permitted to be incurred under
        the covenant described under the caption entitled "--Restrictive
        Covenants--Incurrence of Indebtedness and Issuance of Preferred
        Stock";

  (4) with which neither Lyondell nor any Restricted Subsidiary of Lyondell
      has any contract, agreement, arrangement or understanding other than
      contracts, agreements, arrangements and understandings

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     entered into in the ordinary course of business in connection with the
     sale of accounts receivable in accordance with the covenant described
     under the caption "--Restrictive Covenants--Accounts Receivable
     Facilities" and fees payable in the ordinary course of business in
     connection with servicing accounts receivable; and

  (5) with respect to which neither Lyondell nor any Restricted Subsidiary of
      Lyondell has any obligation:

    (a) to subscribe for additional shares of Capital Stock or other Equity
        Interests or make any additional capital contribution or similar
        payment or transfer thereto other than in connection with the sale
        of accounts receivable to the Accounts Receivable Subsidiary in
        accordance with the covenant described under "--Restrictive
        Covenants--Accounts Receivable Facilities"; or

    (b) to maintain or preserve the solvency, any balance sheet term,
        financial condition, level of income or results of operations
        thereof.

   The references above to sales of accounts receivable to the Accounts
Receivable Subsidiary include a sale in exchange for a promissory note of or
Equity Interest in the Accounts Receivable Subsidiary.

   "Acquired Debt" means, with respect to any specified Person:

  (1) Indebtedness of any other Person existing at the time the other Person
      is merged with or into or became a Subsidiary of the specified Person,
      including, without limitation, Indebtedness incurred in connection
      with, or in contemplation of, the other Person merging with or into or
      becoming a Subsidiary of the specified Person; and

  (2) Indebtedness secured by a Lien encumbering any asset acquired by the
      specified Person.

   "Acquired Disqualified Stock" means, with respect to any specified Person,
Disqualified Stock of any other Person existing at the time the other Person
is merged with or into or became a Subsidiary of the specified Person,
including, without limitation, Disqualified Stock incurred in connection with,
or in contemplation of, the other Person merging with or into or becoming a
Subsidiary of the specified Person.

   "Acquired Preferred Stock" means, with respect to any specified Person,
Preferred Stock of any other Person existing at the time the other Person is
merged with or into or became a Subsidiary of the specified Person, including,
without limitation, Preferred Stock incurred in connection with, or in
contemplation of, the other Person merging with or into or becoming a
Subsidiary of the specified Person.

   "Acquiring Person" means a Person other than a Subject Assets Transferee
which acquires:

  (1) all or a portion of the Subject Assets; or

  (2) an interest in a Subject Assets Transferee in connection with a Major
      Asset Sale.

   "Adjusted Consolidated Cash Flow" means, for any period, the sum of
Consolidated Cash Flow of Lyondell for that period plus the aggregate
Distributable Joint Venture Cash Flow of Lyondell and its Restricted
Subsidiaries, determined on a consolidated basis, for that period.

   "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with that specified Person. For purposes of this definition,
"control", as used with respect to any Person, will mean the possession,
directly or indirectly, of the power to direct or cause the direction of the
management or policies of the Person, whether through the ownership of voting
securities, by agreement or otherwise; provided that beneficial ownership of
10% or more of the voting securities of a Person will be deemed to be control;
provided further that the foregoing proviso will not apply for purposes of
clauses (g) and (i) of the covenant described under "--Restricted Payments" or
clause (d) of the definition of "Unrestricted Subsidiaries." The terms
"controlling," "controlled by" and "under common control with" have the
correlative meanings to the term "control."


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   "Asset Sale" means:

  (1) the sale, lease, conveyance or other disposition, other than the
      creation of a Lien, of any assets other than the disposition of
      inventory, equipment or Cash Equivalents in the ordinary course of
      business consistent with past practices; provided that the sale,
      conveyance or other disposition of all or substantially all the assets
      of Lyondell and its Restricted Subsidiaries taken as a whole will be
      governed by the provisions of the indentures described above under the
      caption "Repurchase at the Option of Holders--Change of Control" and/or
      the provisions described above under the caption "Restrictive
      Covenants--Merger, Consolidation or Sale of Assets" and not by the
      provisions of the Asset Sale covenant;

  (2) the sale by Lyondell or any of its Restricted Subsidiaries of Equity
      Interests of any of Lyondell's Restricted Subsidiaries, Unrestricted
      Subsidiaries or Joint Ventures; and

  (3) the issuance by any of Lyondell's Restricted Subsidiaries of Equity
      Interests of the Restricted Subsidiary, in the case of clauses (1), (2)
      or (3), whether in a single transaction or a series of related
      transactions:

    (a) that have a fair market value in excess of $25 million; or

    (b) for Net Proceeds in excess of $25 million.

   Notwithstanding the foregoing:

  (1) a transfer of assets by Lyondell to a Restricted Subsidiary or by a
      Restricted Subsidiary to Lyondell or to another Restricted Subsidiary;

  (2) an issuance of Equity Interests by a Restricted Subsidiary to Lyondell
      or to another Restricted Subsidiary;

  (3) a Restricted Payment that is permitted by the covenant described under
      the caption "--Restrictive Covenants--Restricted Payments";

  (4) an issuance of Preferred Stock by a Finance Subsidiary that is
      permitted by the covenant described under the caption "--Restrictive
      Covenants--Incurrence of Indebtedness and Issuance of Preferred Stock";

  (5) sales, including a sale in exchange for a promissory note of or Equity
      Interest in the Accounts Receivable Subsidiary, of accounts receivable
      to an Accounts Receivable Subsidiary in connection with any Receivables
      Facility; and

  (6) Sale and Leaseback Transactions

   will not be deemed to be an Asset Sale.

   "Asset Sale Lien" means a Lien on the Subject Assets, including as a Lien
for this purpose contractual rights with respect to the operation of the
Subject Assets, arising in connection with a Major Asset Sale in favor of the
Acquiring Person or an Affiliate thereof which Lien does not secure any
Indebtedness.

   "Attributable Debt" in respect of a Sale and Leaseback Transaction that is
treated as a capital lease in accordance with GAAP means, at the time of
determination, the present value discounted at the rate of interest implicit in
the transaction, determined in accordance with GAAP of the obligation of the
lessee for net rental payments during the remaining term of the lease included
in the Sale and Leaseback Transaction, including any period for which the lease
has been extended or may, at the option of the lessor, be extended.

   "Capital Stock" means:

  (1) in the case of a corporation, corporate stock;


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  (2) in the case of an association or business entity, any and all shares,
      interests, participations, rights or other equivalents (however
      designated) of corporate stock;

  (3) in the case of a partnership, partnership interests, whether general or
      limited; and

  (4) any other interest or participation that confers on a Person the right
      to receive a share of the profits and losses of, or distributions of
      assets of, the issuing Person.

   "Cash Equivalents" means:

  (1) United States dollars;

  (2) securities issued or directly and fully guaranteed or insured by the
      United States government or any agency or instrumentality of the United
      States government, provided that the full faith and credit of the
      United States is pledged in support of the securities having maturities
      of not more than one year from the date of acquisition;

  (3) demand deposits, time deposits and certificates of deposit with
      maturities of one year or less from the date of acquisition, bankers'
      acceptances with maturities not exceeding one year from the date of
      acquisition and overnight bank deposits, in each case with any bank or
      trust Lyondell organized or licensed under the laws of the United
      States or any State having capital, surplus and undivided profits in
      excess of $500 million;

  (4) repurchase obligations with a term of not more than seven days for
      underlying securities of the type described in clauses (2) and (3)
      above entered into with any financial institution meeting the
      qualifications specified in clause (3) above;

  (5) commercial paper rated as least P-1 or A-1 by Moody's or S&P,
      respectively, and in each case maturing within six months after the
      date of acquisition;

  (6) any fund investing exclusively in investments of the type described in
      clauses (1) through (5) above; and

  (7) in the case of a Foreign Subsidiary, substantially similar investments
      denominated in foreign currencies (including similarly capitalized
      foreign banks).

   "Consolidated Cash Flow" means, with respect to any Person for any period,
the Consolidated Net Income of that Person for that period, less the Net Income
of any Joint Venture to the extent included therein under clause (1) of the
definition of "Consolidated Net Income," plus, in each case, without
duplication:

  (1) provision for taxes based on income or profits of the Person and its
      Restricted Subsidiaries for the period, including any provision for
      taxes on the Net Income of any Joint Venture that is a pass-through
      entity for federal income tax purposes, to the extent the taxes are
      paid or payable by the Person or any of its Restricted Subsidiaries, to
      the extent that the provision for taxes was included in computing the
      Consolidated Net Income;

  (2) the Fixed Charges of the Person and its Restricted Subsidiaries for the
      period, to the extent that the Fixed Charges were deducted in computing
      the Consolidated Net Income;

  (3) depreciation and amortization, including amortization of goodwill and
      other intangibles but excluding amortization of prepaid cash expenses
      that were paid in a prior period, of the Person and its Restricted
      Subsidiaries for the period to the extent that the depreciation and
      amortization were deducted in computing the Consolidated Net Income;
      and

  (4) any non-cash charges reducing Consolidated Net Income for the period,
      excluding any non-cash charge to the extent that it represents an
      accrual of or reserve for cash expenses in any future period or
      amortization of a prepaid cash expense that was paid in a prior period;
      minus

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  (5) any non-cash items increasing Consolidated Net Income for the period;

in each case, on a consolidated basis and determined in accordance with GAAP.

   Notwithstanding the foregoing, the provision for taxes on the income or
profits of, and the depreciation and amortization of, a Restricted Subsidiary
of the Person will be added to Consolidated Net Income to compute Consolidated
Cash Flow only to the extent and in the same proportion that the Net Income of
the Restricted Subsidiary was included in calculating the Consolidated Net
Income of the Person.

   "Consolidated Net Income" means, with respect to any Person for any period,
the aggregate of the Net Income of that Person and its Restricted Subsidiaries
for that period, on a consolidated basis, determined in accordance with GAAP;
provided that:

  (1) the Net Income of any Person that is not a Restricted Subsidiary will
      be included only to the extent of the lesser of (x) the amount of
      dividends or distributions paid in cash but not by means of a loan to
      that Person or a Restricted Subsidiary thereof or (y) that Person's or
      a Restricted Subsidiary of that Person's proportionate share of the Net
      Income of the other Person;

  (2) the Net Income (but not loss) of any Restricted Subsidiary will be
      excluded to the extent that the declaration or payment of dividends or
      similar distributions by that Restricted Subsidiary of that Net Income
      is not at the date of determination permitted without any prior
      governmental approval (that has not been obtained) or, directly or
      indirectly, by operation of the terms of its charter or any agreement,
      instrument, judgment, decree, order, statute, rule or governmental
      regulation applicable to that Subsidiary or its stockholders;

  (3) the Net Income of any Person acquired in a pooling of interests
      transaction for any period before the date of the acquisition will be
      excluded; and

  (4) the cumulative effect of a change in accounting principles will be
      excluded.

   "Consolidated Net Worth" means, with respect to any Person as of any date,
the sum of:

  (1) the consolidated equity of the common stockholders of the Person and
      its Restricted Subsidiaries as of the date; plus

  (2) the respective amounts reported on the Person's balance sheet as of the
      date with respect to any series of Preferred Stock (other than
      Disqualified Stock);

less all write-ups, other than write-ups resulting from foreign currency
translations and write-ups of tangible assets of a going concern business made
in accordance with GAAP as a result of the acquisition of the business,
subsequent to the date of the applicable indenture in the book value of any
asset owned by the Person or a consolidated Restricted Subsidiary of the
Person, and excluding the cumulative effect of a change in accounting
principles, all as determined in accordance with GAAP.

   "Disqualified Stock" means any Capital Stock that, by its terms or by the
terms of any security into which it is convertible or for which it is
exchangeable, or upon the happening of any event, matures or is mandatorily
redeemable, under a sinking fund obligation or otherwise, or redeemable at the
option of the holder, in whole or in part, on or before the date on which the
notes mature; provided that any Capital Stock that would not constitute
Disqualified Stock but for provisions giving holders the right to require the
Person to repurchase or redeem the Capital Stock upon the occurrence of an
"asset sale" or "change of control" occurring before the date on which the new
notes mature will not constitute Disqualified Stock if the "asset sale" or
"change of control" provisions applicable to the Capital Stock are no more
favorable to the holders of the Capital Stock than the provisions contained in
"Repurchase at the Option of the Holders--Asset Sales" with respect to the
Senior Subordinated Notes and "--Change of Control" covenants described above
and the Capital Stock specifically provides that the Person will not repurchase
or redeem any stock under the provision before Lyondell's repurchase of the new
notes as are required under the covenants.

   "Distributable Joint Venture Cash Flow" means, with respect to any Person
for any period, in the case of each Joint Venture that is not a Restricted
Subsidiary of that Person, the sum of:

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  (1) the lesser of:

    (a) the amount of dividends or distributions paid in cash but not by
        means of a loan by the Joint Venture to that Person or a Restricted
        Subsidiary; or

    (b) the Person's or a Restricted Subsidiary of that Person's
        proportionate share of:

      (i) the Net Income of the Joint Venture for the period, plus

      (ii) to the extent deducted therefrom, depreciation and
           amortization, including amortization of goodwill and other
           intangibles but excluding amortization of prepaid cash expenses
           that were paid in a prior period, of the Joint Venture for the
           period, plus

      (iii) any non-cash charges reducing Net Income of the Joint Venture
            for the period, excluding any non-cash charge to the extent
            that it represents an accrual of or reserve for cash expenses
            in any future period or amortization of a prepaid cash expense
            that was paid in a prior period, less

      (iv) any non-cash items increasing Net Income of the Joint Venture
           for the period, minus

  (2) the aggregate amount of all Investments made by Lyondell or any of its
      Restricted Subsidiaries in the Joint Venture during the period under
      clause (h) of the covenant described under "--Restrictive Covenants--
      Restricted Payments," in each case determined on a consolidated basis
      and in accordance with GAAP.

   "Equity Interests" means Capital Stock and all warrants, options or other
rights to acquire Capital Stock, but excluding any debt security that is
convertible into, or exchangeable for, Capital Stock.

   "Equistar Assumed Debt" means:

  (1) the 10.00% Notes Due 1999 issued by Lyondell under the Indenture dated
      as of May 31, 1989 between Lyondell and Texas Commerce Bank, National
      Association, as trustee, as supplemented by the First Supplemental
      Indenture dated as of May 31, 1989 and the Second Supplemental
      Indenture dated as of December 1, 1997;

  (2) the 9.125% Notes Due 2002 issued by Lyondell under an Indenture dated
      as of March 10, 1992 between Lyondell and First Trust National
      Association, as trustee, as supplemented by the First Supplemental
      Indenture dated as of March 10, 1992 and the Second Supplemental
      Indenture dated as of December 1, 1997;

  (3) the 6.5% Notes Due 2006 and 7.55% Notes Due 2026, each issued by
      Lyondell under an Indenture dated as of January 29,1996 between
      Lyondell and Texas Commerce Bank National Association, as trustee, as
      supplemented by the First Supplemental Indenture dated as of February
      15, 1996 and the Second Supplemental Indenture dated as of December 1,
      1997; and

  (4) Indebtedness under the medium term notes issued by Lyondell, maturing
      at various dates from 1998 to 2005; in each case outstanding as of May
      17, 1999 and with respect to which, as between Lyondell and Equistar,
      Equistar is the primary obligor and Lyondell is an obligor;

in each case, as may be amended from time to time, provided that any amendment
does not increase the principal amount or interest rate applicable or shorten
the Weighted Average Life to Maturity or Stated Maturity thereof or add any
Restricted Subsidiary as an obligor with respect to the debt.

   "Existing ARCO Chemical Debt" means the 9.9% Debentures Due 2000, the 9.375%
Debentures Due 2005, the 10.25% Debentures Due 2010 and the 9.8% Debentures Due
2020, all issued by ARCO Chemical under the Indenture dated June 15, 1988 among
ARCO Chemical and The Bank of New York, as Trustee.

   "Existing Credit Facility" means the Credit Agreement dated as of July 23,
1998 by and among Lyondell and Morgan Guaranty Trust of New York, as
administrative agent, DLJ Capital Funding, Inc., as syndication

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agent, and the other lenders that are party thereto, including any related
notes, instruments, and agreements executed in connection therewith, as
amended, restated, modified, extended, renewed, refunded, replaced or
refinanced, in whole or in part, from time to time, whether or not with the
same lenders or agents.

   "Existing Indebtedness" means Indebtedness of Lyondell and its Restricted
Subsidiaries in existence, and considered Indebtedness of Lyondell or any of
its Restricted Subsidiaries, on May 17, 1999, until these amounts are repaid,
including all reimbursement obligations with respect to letters of credit
outstanding as of the date of the applicable indenture.

   "Finance Subsidiary" means a Restricted Subsidiary of Lyondell, all the
Capital Stock of which (other than Preferred Stock) is owned by Lyondell that
does not engage in any activity other than:

  (1) holding of Indebtedness of Lyondell;

  (2) the issuance of Capital Stock; and

  (3) any activity necessary, incidental or related to the foregoing.

   "Fixed Charge Coverage Ratio" means with respect to any Person for any
period, the ratio of the Adjusted Consolidated Cash Flow of that Person for
that period to the Fixed Charges of that Person for that period. In the event
that Lyondell or any of its Restricted Subsidiaries incurs, assumes or redeems
any Indebtedness (other than revolving credit borrowings) or issues or redeems
Preferred Stock subsequent to the commencement of the period for which the
Fixed Charge Coverage Ratio is being calculated but before the date on which
the event for which the calculation of the Fixed Charge Coverage Ratio is made
(the "Calculation Date"), then the Fixed Charge Coverage Ratio will be
calculated giving pro forma effect to the incurrence, assumption or redemption
of Indebtedness, or the issuance or redemption of Preferred Stock, as if the
same had occurred at the beginning of the applicable four-quarter reference
period.

   In addition, for purposes of making the computation referred to above:

  (1) acquisitions that have been made by Lyondell or any of its Restricted
      Subsidiaries, including through mergers or consolidations and including
      any related financing transactions, during the four-quarter reference
      period or subsequent to the reference period and on or before the
      Calculation Date will be deemed to have occurred on the first day of
      the four-quarter reference period;

  (2) the Adjusted Consolidated Cash Flow and Fixed Charges attributable to
      operations or businesses disposed of before the Calculation Date, will
      be excluded, but, in the case of the Fixed Charges, only to the extent
      that the obligations giving rise to the Fixed Charges will not be
      obligations of the Person or any of its Restricted Subsidiaries
      following the Calculation Date; and

  (3) if since the beginning of the four-quarter reference period any Person
      was designated as an Unrestricted Subsidiary or redesignated as or
      otherwise became a Restricted Subsidiary, the event will be deemed to
      have occurred on the first day of the four-quarter reference period.

   "Fixed Charges" means, with respect to any Person for any period, the sum,
without duplication, of:

  (1) the consolidated interest expense of the Person and its Restricted
      Subsidiaries for the period, whether paid or accrued, including,
      without limitation, amortization of original issue discount, non-cash
      interest payments, the interest component of any deferred payment
      obligations, the interest component of all payments associated with
      Capital Lease Obligations, commissions, discounts and other fees and
      charges incurred in respect of letters of credit or bankers' acceptance
      financings and net payments or receipts (if any) under Hedging
      Obligations;

  (2) the consolidated interest expense of the Person and its Restricted
      Subsidiaries that was capitalized during the period;

  (3) any interest expense on Indebtedness of another Person, other than Non-
      Recourse Debt of a Joint Venture or Unrestricted Subsidiary secured by
      a pledge by Lyondell or any Restricted Subsidiary of

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     Capital Stock which pledge is permitted by clause (k) or (l) of the
     covenant described under the caption "--Restrictive Covenants--
     Restricted Payments", that is Guaranteed by the Person or one of its
     Restricted Subsidiaries or secured by a Lien on assets of the Person or
     one of its Restricted Subsidiaries (whether or not Guarantee or Lien is
     called upon); and

  (4) the product of:

    (a) all dividend payments other than any payments to the Person or any
        of its Restricted Subsidiaries on any series of Preferred Stock of
        the Person and its Restricted Subsidiaries; times

    (b) a fraction, the numerator of which is one and the denominator of
        which is one minus the then current combined federal, state and
        local statutory tax rate of the Person, expressed as a decimal;

in each case, on a consolidated basis and in accordance with GAAP; provided
that interest payments by Equistar on the Equistar Assumed Debt and interest
payments on Indebtedness of a Joint Venture will, in each case, not be deemed
Fixed Charges of Lyondell as of any date of determination when the Indebtedness
is not considered Indebtedness of Lyondell or any Restricted Subsidiary of
Lyondell.

   "Guarantee" means any obligation, contingent or otherwise, of any Person
directly or indirectly Guaranteeing any Indebtedness or Disqualified Stock of
any other Person and, without limiting the generality of the foregoing, any
obligation, direct or indirect, contingent or otherwise, of the Person:

  (1) to purchase or pay or advance or supply funds for the purchase or
      payment of the Indebtedness or Disqualified Stock of the other Person,
      including those arising by virtue of partnership arrangements other
      than, in the case of Lyondell or a Restricted Subsidiary of Lyondell,
      with respect to the obligations of a Joint Venture, solely by virtue of
      a Restricted Subsidiary of Lyondell being the General Partner of the
      Joint Venture if, as of the date of determination, no payment on the
      Indebtedness or obligation has been made by the General Partner of the
      Joint Venture and the arrangement would not be classified and accounted
      for, in accordance with GAAP, as a liability on a consolidated balance
      sheet of Lyondell; or

  (2) entered into for purposes of assuring in any other manner the obligee
      of the Indebtedness or Disqualified Stock of payment or to protect the
      obligee against loss in whole or in part, including by agreement to
      keep-well, to purchase assets, goods, securities or services, to take-
      or-pay, to maintain financial statement conditions or otherwise;
      provided that the term "Guarantee" will not include endorsements for
      collection or deposit in the ordinary course of business. The term
      "Guarantee" used as a verb has a corresponding meaning.

   "Hedging Obligations" means, with respect to any Person, the obligations of
that Person under:

  (1) interest rate swap agreements, interest rate cap agreements and
      interest rate collar agreements;

  (2) forward foreign exchange contracts or currency swap agreements;

  (3) other agreements or arrangements designed to protect the Person against
      fluctuations in interest rates or currency values; and

  (4) agreements designed to protect the Person against fluctuations in raw
      material prices.

   "Indebtedness" means, with respect to any Person, any indebtedness of that
Person, whether or not contingent, in respect of borrowed money or evidenced by
bonds, notes, debentures or similar instruments or letters of credit or
reimbursement agreements in respect of the indebtedness or banker's acceptances
or representing Capital Lease Obligations or the balance deferred and unpaid of
the purchase price of any property or representing net Hedging Obligations,
except any balance that constitutes an accrued expense or trade payable, if and
to the extent any of the foregoing indebtedness, other than letters of credit
and Hedging Obligations, would appear as a liability on a balance sheet of the
Person prepared in accordance with GAAP, as well as all indebtedness of others
secured by a Lien on any asset of the Person whether or not the indebtedness

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is assumed by the Person (provided that, for purposes of determining the amount
of any Indebtedness of the type described in this clause, if recourse with
respect to the Indebtedness is limited to the asset, the amount of the
Indebtedness will be limited to the lesser of the fair market value of the
asset or the amount of the Indebtedness) and, to the extent not otherwise
included, the Guarantee by the Person of any indebtedness of the types
described above of any other Person; provided that Indebtedness will not
include the pledge by Lyondell or any of its Restricted Subsidiaries of the
Capital Stock of a Joint Venture Subsidiary, Unrestricted Subsidiary or Joint
Venture permitted by clauses (k) or (l) of the covenant described above under
the caption "Restrictive Covenants--Restricted Payments" to secure Non-Recourse
Debt of the Unrestricted Subsidiary or Joint Venture.

   The Equistar Assumed Debt will not constitute Indebtedness of Lyondell as of
any date of determination if Lyondell has not made any principal or interest
payments on the Indebtedness after May 17, 1999; provided that, the payment by
Lyondell of any principal or interest thereon will be deemed to be an
incurrence of the Indebtedness on the day of the payment.

   The amount of any Indebtedness outstanding as of any date will be (i) the
accreted value of the Indebtedness, in the case of any Indebtedness that does
not require current payments of interest and (ii) the principal amount of the
Indebtedness, together with any interest thereon that is more than 30 days past
due, in the case of any other Indebtedness.

   "Investment Grade" means a rating of BBB- or higher by S&P or Baa3 or higher
by Moody's or the equivalent of the ratings by S&P or Moody's. In the event
that Lyondell will select any other Rating Agency under the provisions of the
definition of "Rating Agency", the equivalent of the ratings by the Rating
Agency will be used.

   "Investments" means, with respect to any Person, all investments by the
Person in another Person, including an Affiliate of the Person, in the form of
direct or indirect loans, advances or extensions of credit to the other Person,
including any Guarantee by the Person of the Indebtedness or Disqualified Stock
of the other Person, or capital contributions or purchases or other
acquisitions for consideration of Indebtedness, Equity Interests or other
securities of the other Person, together with all items that are or would be
classified as investments of the investing Person on a balance sheet prepared
in accordance with GAAP; provided that (x) trade credit and accounts receivable
in the ordinary course of business, (y) commissions, loans, advances, fees and
compensation paid in the ordinary course of business to officers, directors and
employees and (z) reimbursement obligations in respect of letters of credit and
tender, bid, performance, government contract, surety and appeal bonds, in each
case solely with respect to obligations of Lyondell or any of its Restricted
Subsidiaries will not be considered Investments. If Lyondell or any Restricted
Subsidiary of Lyondell sells or otherwise disposes of any Equity Interests of
any direct or indirect Restricted Subsidiary of Lyondell such that, after
giving effect to any sale or disposition, the Person is no longer a Restricted
Subsidiary of Lyondell, Lyondell will be deemed to have made an Investment on
the date of any sale or disposition equal to the fair market value of the
Equity Interests of the Restricted Subsidiary not sold or disposed of in an
amount determined as provided in the first paragraph of the covenant described
above under the caption "--Restrictive Covenants--Restricted Payments."

   "Joint Venture Subsidiary" means a Subsidiary of Lyondell or any of its
Subsidiaries that has no assets and conducts no operations other than its
ownership of Equity Interests of a Joint Venture.

   "Major Asset Sale" means an Asset Sale designated by Lyondell by prior
notice to the Trustees as a Major Asset Sale, so long as in connection
therewith:

  (1) Lyondell receives Net Proceeds in an aggregate amount not less than
      $1,000,000,000 which will be deemed Net Proceeds of the Major Asset
      Sale for purposes of the covenant described under the caption "--Asset
      Sales";

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  (2) at the time of the Major Asset Sale and after giving effect thereto, no
      Default will exist;

  (3) the sum of the gross cash proceeds received by Lyondell in respect of
      the Major Asset Sale plus the value of the interest of Lyondell in the
      Subject Assets Transferee (if any) after giving effect to the Major
      Asset Sale is not less than the value (as conclusively determined by
      the board of directors of Lyondell) of the portion of the Subject
      Assets transferred by Lyondell in connection with the Major Asset Sale;
      and

  (4) Lyondell directly or indirectly is the operator of the Subject Assets
      in which it or a Subject Assets Transferee retains an interest.

For purposes of clause (1) above of this definition:

  (1) a transaction which produces substantially the same economic result as
      a sale of a partial interest in an asset, as might be achieved, for
      instance, through contractual arrangements allocating future revenues
      and costs attributable to the asset, will be deemed an Asset Sale even
      though there may be no change in title to the asset or in the ownership
      of the Person which has title to the asset; and

  (2) a subsequent related transaction with the same Acquiring Person or an
      Affiliate of the Acquiring Person contemplated by the terms of the
      initial Major Asset Sale with the Person will, for purposes of
      determining the applicability of and compliance with this definition,
      be deemed a single cumulative transaction.

   "Net Income" means, with respect to any Person, the net income (loss) of
that Person, determined in accordance with GAAP and before any reduction in
respect of Preferred Stock dividends, excluding, however:

  (1) any gain or loss, together with any related provision for taxes on the
      gain or loss, realized in connection with:

    (a) any Asset Sale or any disposition under a Sale and Leaseback
        Transaction; or

    (b) the disposition of any securities by the Person or any of its
        Restricted Subsidiaries or the extinguishment of any Indebtedness
        of the Person or any of its Restricted Subsidiaries; and

  (2) any extraordinary gain or loss, together with any related provision for
      taxes on the extraordinary gain or loss.

   "Net Proceeds" means the aggregate cash proceeds, excluding any proceeds
deemed to be "cash" under the covenant described above under "--Repurchase at
the Option of the Holders--Asset Sales," received by Lyondell or any of its
Restricted Subsidiaries in respect of any Asset Sale (including, without
limitation, any cash received upon the sale or other disposition of any non-
cash consideration received in any Asset Sale), net of the direct costs
relating to the Asset Sale, including, without limitation, legal, accounting
and investment banking fees and sales commissions and any relocation expenses
incurred as a result, taxes paid or payable as a result (after taking into
account any available tax credits or deductions and any tax sharing
arrangements), amounts required to be paid to holders of minority interests in
Restricted Subsidiaries as a result of the Asset Sale, amounts required to be
applied to the repayment of Indebtedness other than Indebtedness under the
Existing Credit Facility or Existing ARCO Chemical Debt secured by a Lien on
any asset sold in the Asset Sale and any reserves for adjustment in respect of
the sale price of the asset or assets established in accordance with GAAP and
any reserve for future liabilities established in accordance with GAAP;
provided that the reversal of any reserve that reduced Net Proceeds when issued
will be deemed a receipt of Net Proceeds in the amount of the proceeds on the
day.

   "Non-Recourse Debt" means Indebtedness as to which the lenders have been
notified in writing that they will not have any recourse to the stock or
assets, in each case, other than the stock of a Joint Venture or Unrestricted
Subsidiary or of a Joint Venture Subsidiary that has no assets and conducts no
operations other than the holding, directly or indirectly, of Equity Interests
of the Joint Venture pledged by Lyondell or any of its Restricted Subsidiaries
to secure debt of the Joint Venture or Unrestricted Subsidiary, of Lyondell or
any of its Restricted Subsidiaries.

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   "Permitted Business" means the petrochemical, chemical and petroleum
refining businesses and any business reasonably related, incidental,
complementary or ancillary to these businesses.

   "Permitted Investments" means:

  (1) any Investment in Lyondell or in a Restricted Subsidiary of Lyondell
      that is engaged in a Permitted Business;

  (2) any Investment in Cash Equivalents;

  (3) any Investment by Lyondell or any Subsidiary of Lyondell in a Person,
      if as a result of that Investment:

    (a) the Person becomes a Restricted Subsidiary of Lyondell engaged in a
        Permitted Business; or

    (b) the Person is merged, consolidated or amalgamated with or into, or
        transfers or conveys substantially all its assets to, or is
        liquidated into, Lyondell or a Restricted Subsidiary of Lyondell
        engaged in a Permitted Business;

  (4) any non-cash consideration, other than a joint venture interest
      received in full or partial satisfaction of the 80% requirement in
      clause (2) of the first paragraph of the covenant described above under
      the caption "--Repurchase at the Option of Holders--Asset Sales,"
      received as consideration in an Asset Sale that was made under and in
      compliance with the covenant described above under the caption "--
      Repurchase at the Option of Holders--Asset Sales";

  (5) any acquisition of assets or Equity Interests solely in exchange for
      the issuance of Equity Interests (other than Disqualified Stock) of
      Lyondell;

  (6) Hedging Obligations entered into in the ordinary course of business and
      otherwise permitted under the applicable indenture;

  (7) Investments in an Accounts Receivable Subsidiary that, as conclusively
      determined by the board of directors, are necessary or advisable to
      effect a Receivables Facility;

  (8) Investments in Unrestricted Subsidiaries and Joint Ventures in an
      aggregate amount, taken together with all other Investments made in
      reliance on this clause (8), not to exceed at any time outstanding $25
      million, after giving effect to any reductions in the amount of any
      Investments as a result of the repayment or other disposition of the
      Investments for cash, the amount of the reduction not to exceed the
      amount of the Investments previously made under this clause (8); and

  (9) any Investment received by Lyondell or any Restricted Subsidiary as
      consideration for the settlement of any litigation, arbitration or
      claim in bankruptcy or in partial or full satisfaction of accounts
      receivable owned by a financially troubled Person to the extent
      reasonably necessary to prevent or limit any loss by Lyondell or any of
      its Restricted Subsidiaries in connection with the accounts receivable.

   "Permitted Liens" means:

  (1) Liens in favor of Lyondell or any Subsidiary Guarantor;

  (2) Liens securing the Senior Secured Notes and the Subsidiary Guarantees;

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  (3) Liens on property of a Person existing at the time the Person is merged
      into or consolidated with Lyondell or any Restricted Subsidiary of
      Lyondell or becomes a Subsidiary of Lyondell; provided that the Liens
      were in existence before the contemplation of the merger, consolidation
      or acquisition and do not extend to any assets of Lyondell or its
      Restricted Subsidiaries other than those of the Person merged into or
      consolidated with Lyondell or that becomes a Restricted Subsidiary of
      Lyondell;

  (4) Liens on property existing at the time of acquisition by Lyondell or
      any Restricted Subsidiary of Lyondell; provided that the Liens were in
      existence before the contemplation of the acquisition;

  (5) Liens, including the interest of a lessor under a capital lease, on any
      asset existing at the time of acquisition or incurred within 180 days
      of the time of acquisition or completion of construction, whichever is
      later, to secure or provide for the payment of all or any part of the
      purchase price (or construction price) thereof;

  (6) Liens incurred or assumed in connection with the issuance of revenue
      bonds the interest on which is exempt from federal income taxation
      under Section 103(b) of the Internal Revenue Code;

  (7) Liens imposed by law, such as laborers' or other employees', carriers',
      warehousemen's, mechanics', materialmen's and vendors' Liens and Liens
      imposed by law on pipelines or pipeline facilities;

  (8) Liens arising by reason of deposits necessary to qualify Lyondell or
      any Restricted Subsidiary to conduct business, maintain self insurance
      or comply with any law and Liens securing the PBGC Settlement;

  (9) Liens to secure the performance of statutory obligations, tender, bid,
      performance, government contract, surety or appeal bonds or other
      obligations of a like nature incurred in the ordinary course of
      business;

  (10) Liens existing on May 17, 1999 other than Liens securing Indebtedness
       under the Existing Credit Facility or the Existing ARCO Chemical Debt;

  (11) Liens for taxes, assessments or governmental charges or claims that
       are not yet delinquent or that are being contested in good faith by
       appropriate proceedings, prejudgment Liens that are being contested in
       good faith by appropriate proceedings and Liens arising out of
       judgments or awards against Lyondell or any Restricted Subsidiary with
       respect to which Lyondell or the Restricted Subsidiary at the time
       will be prosecuting an appeal or proceedings for review and with
       respect to which it will have secured a stay of execution pending the
       appeal or proceedings for review; provided that in each case any
       reserve or other appropriate provision as will be required in
       conformity with GAAP will have been made therefor;

  (12) easements, rights-of-ways, restrictions, irregularities of title and
       other similar charges or encumbrances, not interfering in any material
       respect with the ordinary conduct of the business of Lyondell or any
       of its Restricted Subsidiaries;

  (13) Liens securing reimbursement obligations with respect to commercial
       letters of credit obtained in the ordinary course of business which
       encumber documents and other property or assets relating to the
       letters of credit and products and proceeds thereof;

  (14) Liens securing assets under construction arising from progress or
       partial payments by a customer of Lyondell or its Restricted
       Subsidiaries relating to the property or assets;

  (15) licenses or leases by Lyondell or any of its Restricted Subsidiaries
       as licensor or lessor in the ordinary course of business and otherwise
       permitted by the applicable indenture for patents, copyrights,
       trademarks, tradenames and other intellectual property;

  (16) leases or subleases by Lyondell or any of its Restricted Subsidiaries
       as lessor or sublessor in the ordinary course of business and
       otherwise permitted by the indenture;

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  (17) Liens in favor of customs and revenue authorities arising as a matter
       of law to secure payment of customs duties in connection with the
       importation of goods;

  (18) Liens resulting from the deposit of funds or evidences of Indebtedness
       in trust for the purpose of (A) defeasing Indebtedness of Lyondell or
       any of its Restricted Subsidiaries, which defeasance is otherwise
       permitted under the applicable indenture, having an aggregate
       principal amount at any one time outstanding not to exceed $25 million
       or (B) defeasing Indebtedness ranking pari passu with the notes issued
       under the applicable indenture; provided that the new notes issued
       under the indenture are defeased concurrently with the Indebtedness;

  (19) from and after the first date when the new notes issued under the
       applicable indenture are rated Investment Grade, Liens on any asset of
       Lyondell other than any of Lyondell's or any of its Restricted
       Subsidiary's manufacturing plants or Liens on any Equity Interests of
       any Restricted Subsidiary that owns a manufacturing plant;

  (20) the pledge of Equity Interests of an Unrestricted Subsidiary or Joint
       Venture or of a Joint Venture Subsidiary that has no assets and
       conducts no operations other than the holding, directly or indirectly,
       of Equity Interests of the Joint Venture organized or designated as an
       Unrestricted Subsidiary and holding no other assets and conducting no
       other operations to construct, own and/or operate a propylene oxide
       plant in the European Union to secure Non-Recourse Debt of the Joint
       Venture or Unrestricted Subsidiary;

  (21) the pledge of Equity Interests of an Unrestricted Subsidiary or Joint
       Venture or of a Joint Venture Subsidiary that has no assets and
       conducts no operations other than the holding, directly or indirectly,
       of Equity Interests of the Joint Venture organized or designated as an
       Unrestricted Subsidiary and holding no other assets and conducting no
       other operations to participate in the improvement of the Rhodia TDI
       Plant to secure Non-Recourse Debt of the Joint Venture or Unrestricted
       Subsidiary or Rhodia or a wholly owned subsidiary of Rhodia;

  (22) Liens on equipment of Lyondell or any Restricted Subsidiary arising as
       a result of a sale and leaseback with respect to equipment; provided
       that the proceeds from the sale and leaseback are applied under the
       covenant described above under the caption "--Repurchase at the Option
       of Holders--Asset Sales";

  (23) Asset Sale Liens;

  (24) customary Liens for the fees, costs and expenses of trustees and
       escrow agents under any indenture, escrow agreement or similar
       agreement establishing a trust or escrow arrangement, and Liens under
       merger agreements, stock purchase agreements, asset sale agreements,
       option agreements and similar agreements in respect of the disposition
       of property or assets of Lyondell or any Restricted Subsidiary, to the
       extent the dispositions are permitted under the applicable indenture;

  (25) netting provisions and setoff rights in favor of counterparties to
       agreements creating Hedging Obligations;

  (26) other Liens on assets of Lyondell or any Restricted Subsidiary of
       Lyondell securing Indebtedness that is permitted by the terms of the
       applicable indenture to be outstanding having an aggregate principal
       amount at any one time outstanding not to exceed $100 million; and

  (27) Liens to secure a Permitted Refinancing incurred to refinance
       Indebtedness that was secured by a Lien permitted under the applicable
       indenture and that was incurred in accordance with the provisions of
       the applicable indenture; provided that the Liens do not extend to or
       cover any property or assets of Lyondell or any Restricted Subsidiary
       other than assets or property securing the Indebtedness so refinanced.

   "Permitted Refinancing" means any Indebtedness of Lyondell or any of its
Subsidiaries or Preferred Stock of a Finance Subsidiary issued in exchange for,
or the net proceeds of which are used solely to extend,

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refinance, renew, replace, defease or refund, other Indebtedness of Lyondell or
any of its Restricted Subsidiaries; provided that:

  (1) the principal amount, or liquidation preference in the case of
      Preferred Stock, of the Permitted Refinancing, or if the Permitted
      Refinancing is issued at a discount, the initial issuance price of the
      Permitted Refinancing, does not exceed the principal amount of the
      Indebtedness so extended, refinanced, renewed, replaced, defeased or
      refunded (plus the amount of any premiums paid and reasonable expenses
      incurred in connection therewith);

  (2) the Permitted Refinancing or, in the case of Preferred Stock of a
      Finance Subsidiary, the Indebtedness issued to the Finance Subsidiary,
      has a Stated Maturity date later than the Stated Maturity date of, and
      has a Weighted Average Life to Maturity equal to or greater than the
      Weighted Average Life to Maturity of, the Indebtedness being extended,
      refinanced, renewed, replaced, defeased or refunded;

  (3) if the Indebtedness being extended, refinanced, renewed, replaced,
      defeased or refunded is subordinated by its terms in right of payment
      to the new notes or the Subsidiary Guarantees, the Permitted
      Refinancing, or, in the case of Preferred Stock, the Indebtedness
      issued to the Finance Subsidiary, has a Stated Maturity date later than
      the Stated Maturity date of, and is subordinated in right of payment
      to, the new notes on subordination terms at least as favorable to the
      holders of new notes as those contained in the documentation governing
      the Indebtedness being extended, refinanced, renewed, replaced,
      defeased or refunded;

  (4) the Indebtedness is incurred by Lyondell or a Subsidiary Guarantor or
      the Preferred Stock is issued by a Finance Subsidiary, if Lyondell or a
      Subsidiary Guarantor is the obligor on the Indebtedness being extended,
      refinanced, renewed, replaced, defeased or refunded; and

  (5) the Indebtedness is incurred by Lyondell or a Restricted Subsidiary or
      the Preferred Stock is issued by a Finance Subsidiary, if a Restricted
      Subsidiary that is not a Subsidiary Guarantor is the obligor on the
      Indebtedness being extended, refinanced, renewed, replaced, defeased or
      refunded.

   "Qualified Equity Interests" will mean all Equity Interests of a Person
other than Disqualified Stock of the Person.

   "Restricted Investment" means an Investment other than a Permitted
Investment.

   "Restricted Subsidiary" of a Person means any Subsidiary of that Person
which is not an Unrestricted Subsidiary.

   "Significant Asset Sale" means an Asset Sale of (x) any of Lyondell's or its
Restricted Subsidiaries' plants that (a) has a fair market value in excess of
$50 million or (b) for Net Proceeds in excess of $50 million (a "Significant
Asset") or (y) a controlling interest in any Restricted Subsidiary that owns a
Significant Asset, other than, in each case, an involuntary disposition, to the
extent that the Existing Credit Facility, but not any refinancing thereof other
than a credit facility with commercial banks and other lenders, permits the
proceeds to be reinvested before any mandatory prepayment of amounts
outstanding under the Existing Credit Facility.

   "Significant Subsidiary" means any Restricted Subsidiary that would be a
"significant subsidiary" as defined in Article 1, Rule 1-02 of Regulation S-X,
promulgated under the Act, as the Regulation is in effect on May 17, 1999.

   "Specified Joint Ventures" means (i) Equistar Chemicals, LP, (ii) LYONDELL-
CITGO Refining LP and (iii) Lyondell Methanol Company, L.P.

   "S&P" means Standard & Poor's Ratings Services, a division of The McGraw-
Hill Companies, Inc., and its successors.

   "Stated Maturity" means, with respect to any installment of interest or
principal on any series of Indebtedness, the date on which the payment of
interest or principal was scheduled to be paid in the original documentation
governing the Indebtedness or any later date established by any amendment to
the original documentation and will not include any contingent obligations to
repay, redeem or repurchase the interest or principal before the date
originally scheduled for the payment.

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   "Subject Assets" means, with respect to any Major Asset Sale, the assets
which are the subject of that Major Asset Sale.

   "Subject Assets Transferee" means any Restricted Subsidiary or Joint Venture
which becomes the owner of Subject Assets in connection with a Major Asset
Sale.

   "Subsidiary" means, with respect to any Person:

  (1) any corporation, association or other business entity of which more
      than 50% of the total voting power of shares of Capital Stock entitled
      to vote, without regard to the occurrence of any contingency, in the
      election of directors, managers or trustees thereof is at the time
      owned or controlled, directly or indirectly, by the Person or one or
      more of the other Subsidiaries of that Person (or a combination
      thereof); and

  (2) any partnership:

    (a) the sole general partner or the managing general partner of which
        is the Person or a Subsidiary of the Person; or

    (b) the only general partners of which are the Person or of one or more
        Subsidiaries of the Person or any combination thereof; or

    (c) that is a Specified Joint Venture and as to which:

      (i) a general partner of which is such Person or a subsidiary of
          such Person;

      (ii) the Person owns, directly or indirectly, 50% or more of the
           partnership interests of the Specified Joint Venture; and

      (iii) the board of directors of the Person has designated the
            Specified Joint Venture to be a "subsidiary," which
            designation will be irrevocable for so long as the Specified
            Joint Venture satisfies the foregoing requirements;

As of May 17, 1999, none of the Specified Joint Ventures are Subsidiaries of
Lyondell.

   "Subsidiary Guarantor" means (i) Lyondell Worldwide and Lyondell Nederland
and (ii) any other Subsidiary that executes a Subsidiary Guarantee in
accordance with the provisions of the indentures, in each case, until the
Subsidiary Guarantee of such Person is released in accordance with the
provisions of the indentures.

   "Unrestricted Subsidiary" means:

  (1) any Subsidiary of Lyondell that is designated by the board of directors
      of Lyondell as an Unrestricted Subsidiary under a board resolution;

  (2) any Subsidiary of an Unrestricted Subsidiary; and

  (3) any Accounts Receivable Subsidiary.

The board of directors may designate any Subsidiary of Lyondell, including any
newly acquired or newly formed Subsidiary, to be an Unrestricted Subsidiary
unless the Subsidiary or any of its Subsidiaries owns any Equity Interest or
Indebtedness of, or holds any Lien on any property of, Lyondell or any other
Subsidiary of Lyondell that is not a Subsidiary of the Subsidiary to be so
designated; provided that:

  (a) any Guarantee, other than as a co-obligor of the Equistar Assumed Debt
      so long as the Equistar Assumed Debt is not considered Indebtedness of
      Lyondell under the definition in the applicable indenture, by Lyondell
      or any Restricted Subsidiary of any Indebtedness of the Subsidiary
      being so designated will be deemed an "Incurrence" of the Indebtedness
      and an "Investment" by Lyondell or the Restricted Subsidiary or both,
      if applicable, at the time of the designation;


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  (b) either (i) the Subsidiary to be so designated has total assets of
      $1,000 or less or (ii) if the Subsidiary has assets greater than
      $1,000, the designation would be permitted under the covenant described
      above under the caption "--Restrictive Covenants--Restricted Payments";

  (c) if applicable, the Investment and the incurrence of Indebtedness
      referred to in clause (a) of this proviso would be permitted under the
      covenants described above under the captions "--Restricted Payments"
      and "--Incurrence of Indebtedness and Issuance of Preferred Stock"; and

  (d) in the case of any Subsidiary that is a Joint Venture as of the date of
      its designation as an Unrestricted Subsidiary, the Subsidiary has an
      aggregate of 15% or more of its outstanding Capital Stock or other
      voting interests other than directors' qualifying shares held by
      another Person other than Lyondell or any Restricted Subsidiary or any
      Affiliate of Lyondell.

   Any designation by the board of directors of Lyondell under clause (1) above
will be evidenced to the Trustee by filing with the Trustee a certified copy of
the Board Resolution giving effect to the designation and an Officers'
Certificate certifying that the designation complied with the foregoing
conditions and was permitted by the covenants described above under the
captions "--Restrictive Covenants--Restricted Payments" and "--Incurrence of
Indebtedness and Issuance of Preferred Stock."

   If:

  (1) at any time, any Unrestricted Subsidiary would fail to meet the
      foregoing requirements of clause (d) because Lyondell has acquired more
      than 85% of the outstanding Capital Stock or other voting interests of
      any Subsidiary that was a Joint Venture on the date of its designation
      as an Unrestricted Subsidiary; or

  (2) at any time Lyondell or any Restricted Subsidiary Guarantees any
      Indebtedness of the Unrestricted Subsidiary or makes any other
      Investment in the Unrestricted Subsidiary and the incurrence of
      Indebtedness or Investment would not be permitted under the covenants
      described above under the caption "--Restrictive Covenants--Incurrence
      of Indebtedness and Issuance of Preferred Stock" or "--Restrictive
      Covenants--Restricted Payments";

it will thereafter cease to be an Unrestricted Subsidiary for purposes of the
applicable indenture and any Indebtedness of the Subsidiary will be deemed to
be incurred by a Restricted Subsidiary of Lyondell as of the date and, if the
Indebtedness is not permitted to be incurred as of the date under the covenant
described above under the caption "--Restrictive Covenants--Incurrence of
Indebtedness and Issuance of Preferred Stock," Lyondell will be in default of
the covenant. The board of directors of Lyondell may at any time designate any
Unrestricted Subsidiary to be a Restricted Subsidiary; provided that the
designation will be deemed to be an incurrence of Indebtedness by a Restricted
Subsidiary of Lyondell of any outstanding Indebtedness of the Unrestricted
Subsidiary and the designation will only be permitted if:

  (1) the Indebtedness is permitted under the covenant described above under
      the caption "--Incurrence of Indebtedness and Issuance of Preferred
      Stock"; and

  (2) no Default or Event of Default would be in existence following the
      designation.

   "Weighted Average Life to Maturity" means, when applied to any Indebtedness
at any date, the number of years obtained by dividing:

  (1) the sum of the products obtained by multiplying:

    (a) the amount of each then remaining installment, sinking fund, serial
        maturity or other required payments of principal, including payment
        at final maturity, in respect thereof; by

    (b) the number of years calculated to the nearest one-twelfth that will
        elapse between the date and the making of the payment;

     by:

  (2) the then outstanding principal amount of the Indebtedness.

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                United States Federal Income Tax Considerations

   The following summary describes the material United States federal income
tax consequences expected to apply to the exchange of the outstanding notes for
new notes. This summary is based upon the provisions of the Internal Revenue
Code of 1986, as amended, the final, temporary and proposed regulations
promulgated under the Internal Revenue Code, and administrative rulings and
judicial decisions now in effect. All of the above are subject to change or to
different interpretations, possibly with retroactive effect. This discussion is
for general information only and does not purport to address all of the
possible federal income tax consequences or any other federal, state, local or
foreign tax consequences of the acquisition, ownership and disposition of the
new notes. It is limited to investors who hold the new notes as capital assets.
This summary does not address the federal income tax consequences that may be
relevant to particular investors in light of their unique circumstances or to
some types of investors, such as dealers in securities, insurance companies,
financial institutions, foreign corporations, partnerships or trusts,
nonresident alien individuals and tax-exempt entities, who may be subject to
special treatment under federal income tax law.

   An exchange of the outstanding notes for new notes under the exchange offers
will not constitute a taxable event for federal income tax purposes. As a
result, holders who exchange their outstanding notes for new notes will not
recognize as income any accrued and unpaid interest on the new notes by reason
of the exchange. An exchanging holder will have the same adjusted basis and
holding period in the new notes as it had in the outstanding notes immediately
before the exchange.

   Holders should consult their own tax advisor as to the particular tax
consequences to them of exchanging their outstanding notes for new notes in the
exchange offers, including the applicability and effect of any state, local or
foreign tax laws and or recent or possible future changes in the tax laws.

                         Registration Rights Agreement

   The description of the registration rights agreement set forth below is a
summary of the material provisions of the registration rights agreement. The
registration rights agreement is filed as an exhibit to the registration
statement of which this prospectus is a part.

Exchange Offer Registration Statement

   In connection with the issuance of the outstanding notes, we entered into a
registration rights agreement with the initial purchasers of the outstanding
notes. Under the registration rights agreement, we agreed to:

  . file a registration statement with the SEC on or before 90 days after
    issuance of the outstanding notes;

  . use our best efforts to cause the registration statement to be declared
    effective at the earliest possible date but no later than 210 days after
    the date of issuance of the outstanding notes;

  . use our best efforts to consummate the exchange offers no later than 30
    business days after the registration statement is declared effective;

  . keep the exchange offers open for acceptance of tenders for a period of
    not less than 20 business days after the date notice of the exchange
    offers is mailed to holders of the outstanding notes; and

  . accept for exchange all outstanding notes duly tendered and not validly
    withdrawn under the exchange offers according to the terms of the
    registration statement and letter of transmittal.

   To participate in an exchange offer, each holder must represent that:

  . it is not an "affiliate," as defined in Rule 405 of the Securities Act,
    of Lyondell or a broker-dealer tendering outstanding notes acquired
    directly from Lyondell to its own account;

  . if it is not a broker-dealer or is a broker-dealer but will not receive
    new notes for its own account in exchange for outstanding notes, it is
    not engaged in and does not intend to participate in a distribution of
    the new notes;


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  . it has no arrangement or understanding with any person to participate in
    a distribution of the outstanding notes or the new notes within the
    meaning of the Securities Act;

  . it is acquiring the new notes in the ordinary course of its business; and

  . if it is a broker-dealer that will receive new notes for its own account
    in exchange for outstanding notes, it will represent that the outstanding
    notes to be exchanged for new notes were acquired by it as a result of
    market-making activities or other trading activities and it acknowledges
    that it will deliver a prospectus meeting the requirements of the
    Securities Act in connection with the resale of any new notes. It is
    understood that the holder is not admitting that it is an "underwriter"
    within the meaning of the Securities Act by acknowledging that it will
    deliver, and by delivering, a prospectus.

   As soon as practicable after the exchange offer registration statement
becomes effective, but not more than 30 business days later, we will offer the
holders of outstanding notes who are not prohibited by any law or policy of the
SEC from participating in these exchange offers the opportunity to exchange
their outstanding notes for new notes registered under the Securities Act that
are substantially identical to the outstanding notes, except that the new notes
will not contain terms with respect to transfer restrictions, registration
rights and liquidated damages.

   The registration rights agreement also provides that we will:

  . make available for a period of 180 days after the consummation of the
    exchange offers a prospectus meeting the requirements of the Securities
    Act to any broker-dealer for use in connection with any resale of the new
    notes; and

  . pay all expenses incident to the exchange offers, including the expense
    of one counsel to the holders of the new notes, and indemnify some
    holders of the new notes, including any broker-dealer, against specified
    liabilities, including liabilities under the Securities Act.

Shelf Registration Statement

   We will use our reasonable best efforts to file with the SEC a shelf
registration statement to cover resales of the outstanding notes by those
holders who provide required information in connection with the shelf
registration statement under the following circumstances:

  . if the exchange offers as contemplated by the registration rights
    agreement are not permitted by applicable law; or

  . any holder of outstanding notes notifies us before the 20th business day
    following the consummation of the applicable exchange offer that it:

    (1) is prohibited by law or SEC policy from participating in the
        exchange offers;

    (2) may not resell the new notes to the public without delivering a
        prospectus, and the prospectus contained in the exchange offer
        registration statement is not appropriate or available for resales
        by the holder; or

    (3) is a broker-dealer and holds outstanding notes acquired directly
        from Lyondell or any of Lyondell's affiliates.

   A holder who sells outstanding notes under the shelf registration statement
generally will be:

  . required to be named as a selling security holder in the related
    prospectus and to deliver a prospectus to purchasers;

  . subject to some of the civil liability provisions under the Securities
    Act in connection with resales of the outstanding notes; and

  . bound by the applicable provisions of the registration rights agreement,
    including some of the indemnification obligations.

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<PAGE>

   If filed, we will use our reasonable best efforts to keep the shelf
registration statement effective for a period of two years after May 17, 1999.

Liquidated Damages

   If a registration default under the registration rights agreement occurs, we
will be obligated to pay liquidated damages to each holder of outstanding notes
at an amount equal to $0.05 per week per $1000 in principal amount of
outstanding notes affected. If a registration default is not cured within 90
days, the amount of liquidated damages will increase by an additional $0.05 per
week per $1000 in principal amount of outstanding notes affected with respect
to each subsequent 90-day period during which a registration default continues,
up to a maximum amount of liquidated damages of $0.50 per week per $1000 of
principal amount of outstanding notes.

   A registration default occurs if:

  . a registration statement is not timely filed with the SEC;

  . a registration statement is not declared effective on or before the
    applicable deadline;

  . one or more of the exchange offers are not consummated within 30 business
    days after the exchange offer registration statement is declared
    effective; or

  . a registration statement is filed and declared effective but ceases to be
    effective or usable.

Following the cure of all registration defaults, the accrual of liquidated
damages will cease. We are not required to pay liquidated damages for more than
one registration default at a given time. We are not required to pay liquidated
damages to a holder who has not furnished to Lyondell the information specified
in the registration rights agreement.

   We will pay all accrued but unpaid liquidated damages to the entitled
holders in the manner provided for payment of interest under the applicable
indenture.

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                         Book-entry; Delivery and Form

Description of DTC

   The description of the operations and procedures of DTC set forth below is
provided solely as a matter of convenience. These operations and procedures are
solely within the control of DTC and are subject to change from time to time.
We do not take any responsibility for these operations or procedures, and
investors are urged to contact DTC or its participants directly to discuss
these matters.

   DTC has advised us that it is a:

  .  limited purpose trust organized under the laws of the State of New York;

  .  "banking organization" within the meaning of the New York Banking Law;

  .  member of the Federal Reserve System;

  .  "clearing corporation" within the meaning of the Uniform Commercial
     Code; and

  .  "clearing agency" registered under Section 17A of the Securities
     Exchange Act of 1934.

   DTC was created to hold securities for its participants and facilitates the
clearance and settlement of securities transactions between participants
through electronic book-entry changes to the accounts of its participants,
thereby eliminating the need for physical transfer and delivery of
certificates.

   DTC's participants include securities brokers and dealers, banks and trust
companies, clearing corporations and other organizations. Indirect access to
DTC's system is also available to other entities such as banks, brokers,
dealers and trust companies that clear through or maintain a custodial
relationship with a participant, either directly or indirectly. Investors who
are not participants may beneficially own securities held by or on behalf of
DTC only through participants or indirect participants.

   The new notes will initially be represented by one or more permanent global
notes in definitive, fully registered book-entry form that will be registered
in the name of Cede & Co., as nominee of DTC. The global notes will be
deposited with a custodian for DTC for credit to the respective accounts of the
acquirors of the new notes or to the other accounts as the acquirors may direct
at DTC. See "The Exchange Offers--Book-entry Transfer."

The Global Notes

   We expect that under procedures established by DTC:

  . upon deposit of the global notes with DTC or its custodian, DTC will
    credit on its internal system the portion of the global notes
    corresponding to the respective amounts of the global notes registered to
    the respective accounts of persons who have accounts with the depository;

  . ownership of the new notes will be shown on records maintained by DTC or
    its nominee; and

  . transfers of ownership of the new notes will be effected only through
    records maintained by DTC or its nominee.

   So long as DTC or its nominee is the registered owner of the global notes,
DTC or its nominee, as the case may be, will be considered the sole owner or
holder of the new notes represented by the global notes for all purposes under
the applicable indenture. Except as provided below, owners of beneficial
interests in global notes will not:

  . be entitled to have new notes represented by global notes registered in
    their names;

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  . receive or be entitled to receive physical delivery of certificated new
    notes; and

  . be considered the owners or holders of the global notes under the
    applicable indenture for any purpose, including with respect to the
    giving of any direction, instruction or approval to the trustee.

   Payments of the new notes represented by global notes will be made to DTC,
or its nominee, as the registered owner. None of Lyondell, Lyondell Worldwide,
Lyondell Nederland, the trustee or the paying agent will have any
responsibility or liability for any aspect of the records relating to or
payments made on account of beneficial ownership interest in the global notes
or for maintaining, supervising or reviewing any records relating to beneficial
ownership interest under the applicable indenture.

   We expect that DTC or its nominees, upon receipt of any payment on the new
notes represented by the global notes, will credit participants' accounts with
payments in amounts proportionate to their respective beneficial interest in
the global notes as shown in the records of DTC or its nominee. We also expect
that participants will be governed by standing instructions and customary
practice as is now the case with securities held for the accounts of customers
registered in the names of nominees for the customers. Payment will be the
responsibility of the participants.

   Transfers between participants in DTC will be effected according to DTC's
procedures and will be settled in same-day funds. If a holder requires physical
delivery of a certificated security for any reason, including to sell new notes
to persons in states that require physical delivery of the security or to
pledge the security, a holder must transfer its interest in the global notes
according to the normal procedures of DTC and the procedures in the applicable
indenture.


   Although DTC has agreed to the foregoing procedures to facilitate transfers
of interests in the global notes among participants in DTC is under no
obligation to perform or to continue to perform procedures, and procedures may
be discontinued at any time. Neither we nor the trustee will have any
responsibility for the performance by DTC or its participants or indirect
participants of their obligations under the rules and procedures governing
their operations.

Certificated Notes

   Interests in the global notes may be exchanged for certificated securities
if:

  . we notify the trustee in writing that DTC is no longer willing or able to
    act as a depositary or DTC ceases to be registered as a clearing agency
    under the Exchange Act and a successor depositary is not appointed within
    90 days of notice or cessation;

  . we, at our option, notify the trustee in writing that we elect to cause
    the issuance of the new notes in certificated form under the applicable
    indenture; or

  . other events occur as provided in the applicable indenture.

Upon the occurrence of any of the events described in the preceding sentence,
we will cause the appropriate certificated securities to be delivered.

   Neither Lyondell, Lyondell Worldwide, Lyondell Nederland, nor the trustee
will be liable for any delay by DTC or any participant or indirect participant
in identifying the beneficial owners of the related notes. Each person is
protected in conclusively relying on instructions from DTC for all purposes,
including with respect to the registration and delivery of the new notes, and
the respective principal amounts of the new notes.

                                      125
<PAGE>

                              Plan of Distribution

   Based on interpretations by the staff of the SEC in "no action letters"
issued to third parties, we believe that you may transfer new notes issued
under an exchange offer in exchange for the outstanding notes if:

  . you acquire the new notes in the ordinary course of your business; and

  . you are not engaged in, and do not intend to engage in, and have no
    arrangement or understanding with any person to participate in, a
    distribution of the new notes.

Broker-dealers receiving new notes in the exchange offers will be subject to a
prospectus delivery requirement with respect to resales of the new notes. Each
letter of transmittal states that by acknowledging and delivering a prospectus,
a broker-dealer will not be deemed to admit that it is an "underwriter" within
the meaning of the Securities Act. This prospectus, as it may be amended or
supplemented from time to time, may be used by a broker-dealer in connection
with resales of the new notes received in exchange for outstanding notes where
the outstanding notes were acquired by the broker-dealer as a result of market-
making activities or other trading activities.

   We believe that you may not transfer the new notes issued under an exchange
offer in exchange for the outstanding notes if you are either:

  . our "affiliate" within the meaning of Rule 405 under the Securities Act;

  . a broker-dealer that acquired the outstanding notes directly from us; or

  . a broker-dealer that acquired the outstanding notes as a result of
    market-making or other trading activities without compliance with the
    registration and prospectus delivery provisions of the Securities Act.

   The staff of the SEC has taken the position that participating broker-
dealers may fulfill their prospectus delivery requirements with respect to
transactions involving an exchange of securities such as these exchange offers,
other than a resale of an unsold allotment from the original sale of the
outstanding notes, by delivering the prospectus contained in the exchange offer
registration statement. Broker-dealers who acquired the outstanding notes from
Lyondell may not rely on SEC staff interpretations. They must comply with the
registration and prospectus delivery requirements of the Securities Act,
including being named as selling noteholders, in order to resell the
outstanding notes or the new notes. In the registration rights agreement, we
agreed to permit participating broker-dealers to use this prospectus in
connection with the resale of the new notes. We have agreed that we will make
this prospectus, and any amendment or supplement to this prospectus, available
for a period up to 180 days after the expiration of each exchange offer to any
broker-dealer that requests these documents in the applicable letter of
transmittal.

   If you wish to exchange your outstanding notes for new notes in an exchange
offer, you will be required to make representations to us as described in "The
Exchange Offers--Purpose and Effect of the Exchange Offer" and "--Procedures
for Tendering--Your Representations to Us" of this prospectus and in the
applicable letter of transmittal. In addition, if you are a broker-dealer who
receives the new notes for your own account in exchange for outstanding notes
that were acquired by you as a result of market-making activities or other
trading activities, you will be required to acknowledge that you will deliver a
prospectus in connection with any resale by you of the new notes.

   We will not receive any proceeds from any sale of the new notes by broker-
dealers. Broker-dealers who receive new notes for their own account in an
exchange offer may sell them from time to time in one or more transactions
either:

  . in the over-the-counter market;

  . in negotiated transactions;

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<PAGE>

  . through the writing of options on the new notes or a combination of
    methods of resale;

  . at market prices prevailing at the time of resale; or

  . at prices related to prevailing market prices or negotiated prices.

   Any resale of the new notes may be made directly to purchasers or to or
through brokers or dealers who may receive compensation in the form of
commissions or concessions from any broker-dealer or the purchasers of any new
notes. Any broker-dealer that resells the new notes it received for its own
account in an exchange offer and any broker or dealer that participates in a
distribution of the new notes may be deemed to be an "underwriter" within the
meaning of the Securities Act. Any profit on any resale of the new notes and
any commissions or concessions received by any persons may be deemed to be
underwriting compensation under the Securities Act. Each broker-dealer that
receives the new notes for its own account using a registered exchange offer
must acknowledge that it will deliver a prospectus in connection with any
resale of the new notes. Each letter of transmittal states that by
acknowledging and delivering a prospectus, a broker-dealer will not be deemed
to admit that it is an "underwriter" within the meaning of the Securities Act.

   We have agreed to pay all expenses incidental to each exchange offer other
than commissions and concessions of any brokers or dealers. We will indemnify
holders of the outstanding notes, including any broker-dealers, against some
liabilities, including liabilities under the Securities Act, as provided in the
registration rights agreement.

                                 Legal Matters

   Baker & Botts, L.L.P., Houston, Texas, counsel for Lyondell, Lyondell
Worldwide and Lyondell Nederland, has issued an opinion about the legality of
the new notes.

                                    Experts

   The consolidated financial statements of Lyondell Chemical Company as of
December 31, 1998 and 1997 and for each of the three years in the period ended
December 31, 1998, incorporated in this prospectus by reference to the Lyondell
Chemical Company Annual Report on Form 10-K for the year ended December 31,
1998, have been so incorporated in reliance on the report of
PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in auditing and accounting.

   The financial statements of Equistar Chemicals, LP as of December 31, 1998
and 1997 and for the year ended December 31, 1998 and the period from December
1, 1997 (inception) to December 31, 1997, incorporated in this prospectus by
reference to the Lyondell Chemical Company Annual Report on Form 10-K for the
year ended December 31, 1998, have been so incorporated in reliance on the
report of PricewaterhouseCoopers LLP, independent accountants, given on the
authority of said firm as experts in auditing and accounting.

   The financial statements of LYONDELL-CITGO Refining LP as of December 31,
1998 and for the year ended December 31, 1998 incorporated in this registration
statement by reference from Lyondell's Annual Report on Form 10-K for the year
ended December 31, 1998 have been audited by Deloitte & Touche LLP, independent
auditors, as stated in their report, which is incorporated herein by reference
and has been so incorporated in reliance upon the report of such firm given
upon their authority as experts in accounting and auditing.

   The financial statements of LYONDELL-CITGO Refining LP as of December 31,
1997 and for each of the two years in the period ended December 31, 1997,
incorporated in this prospectus by reference to the Lyondell Chemical Company
Annual Report on Form 10-K for the year ended December 31, 1998, have been so
incorporated in reliance on the report of PricewaterhouseCoopers LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.

                                      127
<PAGE>

                      Where You Can Find More Information

   Lyondell files annual, quarterly and special reports, proxy statements and
other information with the U.S. Securities and Exchange Commission. Lyondell's
SEC filings are available to the public over the Internet at the SEC's web site
at http://www.sec.gov. You may also read and copy any document Lyondell files
at the SEC's public reference rooms in Washington, D.C., New York, New York and
Chicago, Illinois. Please call the SEC at 1-800-SEC-0330 for further
information on the public reference rooms. In addition, because Lyondell's
common stock is listed on the New York Stock Exchange, reports and other
information concerning Lyondell can also be inspected at the office of the New
York Stock Exchange, Inc., 20 Broad Street, New York, New York 10005.

                    Incorporation of Documents by Reference

   Lyondell has "incorporated by reference" information in this prospectus.
This means that we can disclose important information to you by referring you
to those documents. The information incorporated by reference is an important
part of this prospectus. Information that we file later with the SEC will
automatically update and supersede the information in this prospectus. Lyondell
incorporates by reference the documents listed below and any future filings
made with the SEC (file no. 1-10145) under Sections 13(a), 13(c), 14, or 15(d)
of the Securities Exchange Act of 1934, until each exchange offer expires or is
terminated.

  1. Annual Report on Form 10-K . . . Year Ended December 31, 1998
  2. Current Reports on Form 8-K . . . Filed on April 19, 1999, April 21,
     1999, May 12, 1999 and June 29, 1999
  3. Quarterly Report on Form 10-Q . . . Filed on May 12, 1999

   You may request a copy of these filings at no cost by writing or telephoning
us the following address:

                              Corporate Secretary
                           Lyondell Chemical Company
                            1221 McKinney, Suite 700
                              Houston, Texas 77010
                           Telephone: (713) 652-7200

   Whether or not required by the rules and regulations of the SEC, so long as
any new notes are outstanding, we have agreed to furnish to the trustees,
within 15 days after we are or would have been required to file with the SEC,
and to furnish to the holders of the new notes thereafter:

  . all quarterly and annual financial information that would be required to
    be contained in a filing with the SEC on Forms 10-Q and 10-K if we were
    required to file these forms, including a "Management's Discussion and
    Analysis of Financial Condition and Results of Operations" and, with
    respect to the annual information only, a report thereon by our certified
    independent accountants; and

  . all current reports that would be required to be filed with the SEC on
    Form 8-K if we were required to file these reports.

   In addition, whether or not required by the rules and regulations of the
SEC, we will file a copy of all this information and reports with the SEC for
public availability and make the information available to securities analysts
and prospective investors upon request.

   In addition, we have agreed that, for so long as any new notes remain
outstanding, we will furnish to the holders and to securities analysts and
prospective investors, upon their request, the information required to be
delivered under Rule 144A(d)(4) under the Securities Act. Any request and
requests for the agreements summarized in this prospectus should be directed to
the address referred to above.

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<PAGE>

- --------------------------------------------------------------------------------

PROSPECTUS dated July   , 1999

                           Lyondell Chemical Company

                                 $2,400,000,000

                               Offers to Exchange

                                ALL OUTSTANDING

                9 5/8% Senior Secured Notes, Series A, due 2007
                9 7/8% Senior Secured Notes, Series B, due 2007
                   10 7/8% Senior Subordinated Notes due 2009

                                      for

                                 ALL REGISTERED

                9 5/8% Senior Secured Notes, Series A, due 2007
                9 7/8% Senior Secured Notes, Series B, due 2007
                   10 7/8% Senior Subordinated Notes due 2009

   You should rely only on the information contained or incorporated by
reference in this prospectus. We have not authorized anyone to provide you with
different information. We are not offering to exchange notes in any
jurisdiction where the offer is not permitted. We do not claim the accuracy of
the information in this prospectus as of any date other than the date stated on
the cover.

- --------------------------------------------------------------------------------
<PAGE>

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20. Indemnification of Directors and Officers

 By-Law Provisions

Lyondell

   Lyondell's By-Laws provide that Lyondell will indemnify each of its officers
and directors to the fullest extent authorized by Section 145 of the General
Corporation Law of the State of Delaware. Article V of the By-Laws reads as
follows:

     (a) Indemnification of Officers and Directors. Lyondell will indemnify
  the officers and directors of Lyondell with respect to all matters to which
  Section 145 of the General Corporation Law of the State of Delaware may in
  any way relate, to the fullest extent permitted or allowed by the laws of
  the State of Delaware, whether or not specifically required, permitted or
  allowed by said Section 145. Any repeal or modification of this Section
  will not in any way diminish any rights to indemnification of such person
  or the obligations of Lyondell that may have previously arisen hereunder.

     (b) Non-Exclusivity of Rights. The right to indemnification and the
  payment of expenses incurred in defending a proceeding in advance of its
  final disposition conferred in this Section will not be exclusive of any
  other right which any person may have or hereafter acquire under any
  statute, Lyondell's Certificate of Incorporation, any By-Law, any
  agreement, a vote of Company stockholders or of disinterested Company
  directors or otherwise, both as to action in that person's official
  capacity and as to action in any other capacity by holding such office, and
  will continue after the person ceases to serve Lyondell as a director or
  officer or to serve another entity at the request of Lyondell.

     (c) Insurance. Lyondell may maintain insurance, at its expense, to
  protect itself and any director or officer of Lyondell or another
  corporation, partnership, joint venture, trust or other enterprise against
  any expense, liability or loss, whether or not Lyondell would have the
  power to indemnify such person against such expense, liability or loss
  under the General Corporation Law of Delaware.

     (d) Indemnity Agreements. Lyondell may from time to time enter into
  indemnity agreements with the persons who are members of its board of
  directors, its elected officers and with such other persons as the board of
  directors may designate, the form of such indemnity agreements to be
  approved by a majority of the Board then in office.

     (e) Indemnification of Employees and Agents of Lyondell. Lyondell may,
  under procedures authorized from time to time by the board of directors,
  grant rights to indemnification, and to payment by Lyondell of the expenses
  incurred in defending any proceeding in advance of its final disposition to
  any employee or agent of Lyondell to the fullest extent of the provisions
  of this Article V.

 Delaware General Corporation Law Provisions

   Section 145 of the General Corporation Law of the State of Delaware
provides:

     (a) A corporation will have power to indemnify any person who was or is
  a party or is threatened to be made a party to any threatened, pending or
  completed action, suit or proceeding, whether civil, criminal,
  administrative or investigative (other than an action by or in the right of
  the corporation) by reason of the fact that the person is or was a
  director, officer, employee or agent of the corporation, or is or was
  serving at the request of the corporation as a director, officer, employee
  or agent of another corporation, partnership, joint venture, trust or other
  enterprise, against expenses (including attorneys' fees), judgments, fines
  and amounts paid in settlement actually and reasonably incurred by the
  person in connection with such action, suit or proceeding if the person
  acted in good faith and in a manner the person reasonably believed to be in
  or not opposed to the best interests of the corporation, and, with

                                      II-1
<PAGE>

  respect to any criminal action or proceeding, had no reasonable cause to
  believe the person's conduct was unlawful. The termination of any action,
  suit or proceeding by judgment, order, settlement, conviction, or upon a
  plea of nolo contendere or its equivalent, will not, of itself, create a
  presumption that the person did not act in good faith and in a manner which
  the person reasonably believed to be in or not opposed to the best
  interests of the corporation, and, with respect to any criminal action or
  proceeding, had reasonable cause to believe that the person's conduct was
  unlawful.

     (b) A corporation will have power to indemnify any person who was or is
  a party or is threatened to be made a party to any threatened, pending or
  completed action or suit by or in the right of the corporation to procure a
  judgment in its favor by reason of the fact that the person is or was a
  director, officer, employee or agent of the corporation, or is or was
  serving at the request of the corporation as a director, officer, employee
  or agent of another corporation, partnership, joint venture, trust or other
  enterprise against expenses (including attorneys' fees) actually and
  reasonably incurred by the person in connection with the defense or
  settlement of such action or suit if the person acted in good faith and in
  a manner the person reasonably believed to be in or not opposed to the best
  interests of the corporation and except that no indemnification will be
  made in respect of any claim, issue or matter as to which such person will
  have been adjudged to be liable to the corporation unless and only to the
  extent that the Court of Chancery or the court in which such action or suit
  was brought will determine upon application that, despite the adjudication
  of liability but in view of all the circumstances of the case, such person
  is fairly and reasonably entitled to indemnity for such expenses which the
  Court of Chancery or such other court will deem proper.

     (c) To the extent that a present or former director or officer of a
  corporation has been successful on the merits or otherwise in defense of
  any action, suit or proceeding referred to in subsections (a) and (b) of
  this section or in defense of any claim, issue or matter therein, such
  person will be indemnified against expenses (including attorneys' fees)
  actually and reasonably incurred by such person in connection therewith.

     (d) Any indemnification under subsections (a) and (b) of this section
  (unless ordered by a court) will be made by the corporation only as
  authorized in the specific case upon a determination that indemnification
  of the present or former director, officer, employee or agent is proper in
  the circumstances because the person has met the applicable standard of
  conduct set forth in subsections (a) and (b) of this section. Such
  determination will be made, with respect to a person who is a director or
  officer at the time of such determination, (1) by a majority vote of the
  directors who are not parties to such action, suit or proceeding, even
  though less than a quorum, or (2) by a committee of such directors
  designated by majority vote of such directors, even though less than a
  quorum, or (3) if there are no such directors, or if such directors so
  direct, by independent legal counsel in a written opinion, or (4) by the
  stockholders.

     (e) Expenses (including attorneys' fees) incurred by an officer or
  director in defending any civil, criminal, administrative, or investigative
  action, suit or proceeding may be paid by the corporation in advance of the
  final disposition of such action, suit or proceeding upon receipt of an
  undertaking by or on behalf of such director or officer to repay such
  amount if it will ultimately be determined that such person is not entitled
  to be indemnified by the corporation as authorized in this section. Such
  expenses (including attorneys' fees) incurred by former directors and
  officers and other employees and agents may be so paid upon such terms and
  conditions, if any, as the corporation deems appropriate.

     (f) The indemnification and advancement of expenses provided by, or
  granted pursuant to, the other subsections of this section will not be
  deemed exclusive of any other rights to which those seeking indemnification
  or advancement of expenses may be entitled under any bylaw, agreement, vote
  of stockholders or disinterested directors or otherwise, both as to action
  in such person's official capacity and as to action in another capacity
  while holding such office.

     (g) A corporation will have power to purchase and maintain insurance on
  behalf of any person who is or was a director, officer, employee or agent
  of the corporation, or is or was serving at the request of the corporation
  as a director, officer, employee or agent of another corporation,
  partnership, joint venture, trust

                                      II-2
<PAGE>

  or other enterprise against any liability asserted against such person and
  incurred by such person in any such capacity, or arising out of such
  person's status as such, whether or not the corporation would have the
  power to indemnify such person against such liability under this section.

     (h) For purposes of this section, references to "the corporation" will
  include, in addition to the resulting corporation, any constituent
  corporation (including any constituent of a constituent) absorbed in a
  consolidation or merger which, if its separate existence had continued,
  would have had power and authority to indemnify its directors, officers,
  and employees or agents, so that any person who is or was a director,
  officer, employee or agent of such constituent corporation, or is or was
  serving at the request of such constituent corporation as director,
  officer, employee or agent of another corporation, partnership, joint
  venture, trust or other enterprise, will stand in the same position under
  this section with respect to the resulting or surviving corporation as such
  person would have with respect to such constituent corporation if its
  separate existence had continued.

     (i) For purposes of this section, references to "other enterprises" will
  include employee benefit plans; references to "fines" will include any
  excise taxes assessed on a person with respect to an employee benefit plan;
  and references to "serving at the request of the corporation" will include
  any service as a director, officer, employee or agent of the corporation
  which imposes duties on, or involves services by, such director, officer,
  employee or agent with respect to an employee benefit plan, its
  participants or beneficiaries; and a person who acted in good faith and in
  a manner such person reasonably believed to be in the interest of the
  participants and beneficiaries of an employee benefit plan will be deemed
  to have acted in a manner "not opposed to the best interests of the
  corporation" as referred to in this section.

     (j) The indemnification and advancement of expenses provided by, or
  granted pursuant to, this section will, unless otherwise provided when
  authorized or ratified, continue as to a person who has ceased to be a
  director, officer, employee or agent and will inure to the benefit of the
  heirs, executors and administrators of such a person.

     (k) The Court of Chancery is hereby vested with exclusive jurisdiction
  to hear and determine all actions for advancement of expenses or
  indemnification brought under this section or under any bylaw, agreement,
  vote of stockholders or disinterested directors, or otherwise. The Court of
  Chancery may summarily determine a corporation's obligation to advance
  expenses (including attorneys' fees).

 Certificate of Incorporation Provisions

Lyondell

   Lyondell's Certificate of Incorporation limits the personal liability of
directors to Lyondell and its stockholders for monetary damages resulting from
some breaches of the directors' fiduciary duties. Article VII of the
Certificate of Incorporation provides as follows:

   To the fullest extent permitted by the General Corporation Law of Delaware
as the same exists or may hereafter be amended, a director of Lyondell will not
be liable to Lyondell or its stockholders for monetary damages for breach of
fiduciary duty as a director. If the General Corporation Law of Delaware is
amended to authorize corporate action further eliminating or limiting the
personal liability of directors, then the liability of a director of Lyondell
will be eliminated or limited to the fullest extent permitted by the General
Corporation Law of Delaware, as so amended. Any repeal or modification of this
Article VII by the stockholders of Lyondell will not adversely affect any right
or protection of a director of Lyondell existing at the time of such repeal or
modification or with respect to events occurring prior to such time.
Notwithstanding anything contained in Lyondell's Certificate of Incorporation
to the contrary, the affirmative vote of the holders of not less than 66 2/3
percent of all votes entitled to be cast by the holders of stock of Lyondell
will be required to amend or repeal this Article VII or to adopt any provision
inconsistent herewith.

                                      II-3
<PAGE>

   Section 102(b)(7) of the General Corporation Law of the State of Delaware
provides that a corporation's Certificate of Incorporation may contain the
following:

   (7) A provision eliminating or limiting the personal liability of a director
to the corporation or its stockholders for monetary damages for breach of
fiduciary duty as a director, provided that such provision will not eliminate
or limit the liability of a director:

    . for any breach of the director's duty of loyalty to the corporation
      or its stockholders;

    . for acts or omissions not in good faith or which involve intentional
      misconduct or a knowing violation of law;

    . under section 174 of this title; or

    . for any transaction from which the director derived an improper
      personal benefit.

No such provision will eliminate or limit the liability of a director for any
act or omission occurring prior to the date when such provision becomes
effective. All references in this paragraph to a director will also be deemed
to refer (x) to a member of the governing body of a corporation which is not
authorized to issue capital stock, and (y) to such other person or persons, if
any, who, pursuant to a provision of the certificate of incorporation in
accordance with section 141(a) of this title, exercise or perform any of the
powers or duties otherwise conferred or imposed upon the board of directors by
this title.

Lyondell Worldwide

   Lyondell Worldwide's Certificate of Incorporation limits the personal
liability of directors for monetary damages resulting from some breaches of
directors' fiduciary duties. Article IX of the Certificate of Incorporation
provides as follows:

     To the fullest extent permitted by the General Corporation Law of
  Delaware as the same exists or may hereafter be amended, a director of the
  Company will not be liable to the Company or its stockholders for monetary
  damages for breach of fiduciary duty as a director. If the General
  Corporation Law of Delaware is amended after approval by the stockholders
  of this provision to authorize corporate action further eliminating or
  limiting the personal liability of directors, then the liability of a
  director of the Company will be eliminated or limited to the fullest extent
  permitted by the General Corporation Law of Delaware, as so amended. Any
  repeal or modification of this Article IX by the stockholders of the
  Company will not adversely affect any right or protection of a director of
  the Company existing at the time of such repeal or modification or with
  respect to events occurring prior to such time. Notwithstanding anything
  contained in this Certificate to the contrary, the affirmative vote of the
  holders of not less than 66 2/3 percent of all votes entitled to be cast by
  the holders of stock of the Company will be required to amend or repeal
  this Article IX or to adopt any provision inconsistent herewith.

ITEM 21. Exhibits

<TABLE>
<CAPTION>
 Exhibit No. Exhibit
 <C>         <S>
  **3.1      Amended and Restated Certificate of Incorporation of Lyondell
             Chemical Worldwide, Inc.

  **3.2      Amended and Restated By-Laws of Lyondell Chemical Worldwide, Inc.

  **3.3      Amended and Restated Certificate of Incorporation of Lyondell
             Chemical Nederland, Ltd.

  **3.4      Amended and Restated By-Laws of Lyondell Chemical Nederland, Ltd.

  **4.1      Registration Rights Agreement by and among Lyondell Chemical
             Company, Lyondell Chemical Worldwide, Inc., Lyondell Chemical
             Nederland, Ltd. and Donaldson, Lufkin & Jenrette Securities
             Corporation, J.P. Morgan Securities Inc., Salomon Smith Barney,
             Inc., Chase Securities Inc. and NationsBanc Montgomery Securities
             LLC, dated as of May 17, 1999

</TABLE>


                                      II-4
<PAGE>

<TABLE>
 <C>      <S>
   **4.2  Indenture among Lyondell Chemical Company, the Subsidiary Guarantors
          party thereto and The Bank of New York, as Trustee, dated as of May
          17, 1999, for 9 5/8% Senior Secured Notes, Series A, due 2007

   **4.3  Indenture among Lyondell Chemical Company, the Subsidiary Guarantors
          party thereto and The Bank of New York, as Trustee, dated as of May
          17, 1999, for 9 7/8% Senior Secured Notes, Series B, due 2007

   **4.4  Indenture among Lyondell Chemical Company, the Subsidiary Guarantors
          party thereto and The Bank of New York, as Trustee, dated as of May
          17, 1999, for 10 7/8% Senior Subordinated Notes due 2009

  **5     Opinion of Baker & Botts, L.L.P.

   *12    Statement Setting Forth Detail for Computation of Ratio of Earnings
          to Fixed Charges (Filed as an exhibit to Lyondell's Annual Report on
          Form 10-K for the year ended December 31, 1998 and incorporated
          herein by reference)

    23.1  Consent of PricewaterhouseCoopers LLP

    23.2  Consent of Deloitte & Touche LLP

    23.3  Consent of Baker & Botts, L.L.P. (included in Exhibit 5)

    24.1  Powers of Attorney for Lyondell Chemical Company

    24.2  Powers of Attorney for Lyondell Chemical Worldwide, Inc.

    24.3  Powers of Attorney for Lyondell Chemical Nederland, Ltd.

  **25.1  Statement of Eligibility under the Trust Indenture Act of 1939, as
          amended, of the Trustee under the Indenture relating to the Series A
          Senior Secured Notes

  **25.2  Statement of Eligibility under the Trust Indenture Act of 1939, as
          amended, of the Trustee under the Indenture relating to the Series B
          Senior Secured Notes

  **25.3  Statement of Eligibility under the Trust Indenture Act of 1939, as
          amended, of the Trustee under the Indenture relating to the Senior
          Subordinated Notes

    99.1  Form of Letter to DTC Participants for 9 5/8% Senior Secured Notes,
          Series A, due 2007

    99.2  Form of Letter to DTC Participants for 9 7/8% Senior Secured Notes,
          Series B, due 2007

    99.3  Form of Letter to DTC Participants for 10 7/8% Senior Subordinated
          Notes due 2009

    99.4  Form of Letter to Clients for 9 5/8% Senior Secured Notes, Series A,
          due 2007

    99.5  Form of Letter to Clients for 9 7/8% Senior Secured Notes, Series B,
          due 2007

    99.6  Form of Letter to Clients for 10 7/8% Senior Subordinated Notes due
          2009

    99.7  Form of Notice of Guaranteed Delivery for 9 5/8% Senior Secured
          Notes, Series A, due 2007

    99.8  Form of Notice of Guaranteed Delivery for 9 7/8% Senior Secured
          Notes, Series A, due 2007

    99.9  Form of Notice of Guaranteed Delivery for 10 7/8% Senior Secured
          Notes, Series A, due 2009

    99.10 Form of Letter of Transmittal for 9 5/8% Senior Secured Notes,
          Series A, due 2007

    99.11 Form of Letter of Transmittal for 9 7/8% Senior Secured Notes,
          Series B, due 2007

    99.12 Form of Letter of Transmittal for 10 7/8% Senior Subordinated Notes
          due 2009

</TABLE>
- --------
 * Incorporated by reference from the filing indicated.

** Previously filed.

                                      II-5
<PAGE>

ITEM 22. Undertakings

  1. The undersigned co-registrants hereby undertake:

    . to file, during any period in which offers or sales are being made, a
      post-effective amendment to this registration statement to

      --include any prospectus required by section 10(a)(3) of the
        Securities Act of 1933

      --include any material information with respect to the plan of
       distribution not previously disclosed in the registration statement
       or any material change to information in the registration statement

      --reflect in the prospectus any facts or events arising after the
       effective date of the registration statement or its most recent
       post-effective amendment which, individually or in the aggregate,
       represent a fundamental change in the information shown in the
       registration statement.

       Any increase or decrease in volume of securities offered if the
       total dollar value of securities offered would not exceed that which
       was registered and any deviation from the low or high end of the
       estimated maximum offering range may be reflected in the form of
       prospectus filed with the SEC under Rule 424(b) of the Securities
       Act if, in the aggregate, the changes in volume and price represent
       no more than a 20% change in the maximum aggregate offering price
       stated in the "Calculation of Registration Fee" table in the
       effective registration statement

    . that, for the purpose of determining any liability under the
      Securities Act of 1933, each post-effective amendment will be deemed
      to be a new registration statement relating to the securities offered
      therein, and the offering of securities at that time will be deemed
      to be the initial bona fide offering

    . to remove from registration by means of a post-effective amendment
      any of the securities being registered which remain unsold at the
      termination of the offering

  2. The undersigned co-registrants hereby undertake that, for purposes of
     determining any liability under the Securities Act of 1933, each filing
     of the registrants' annual report under section 13(a) or section 15(d)
     of the Securities Exchange Act of 1934 (and, where applicable, each
     filing of an employee benefit plan's annual report pursuant to section
     15(d) of the Securities Exchange Act of 1934) that is incorporated by
     reference in the registration statement will be deemed to be a new
     registration statement relating to the securities offered therein, and
     the offering of such securities at that time will be deemed to be the
     initial bona fide offering.

  3. Insofar as indemnification for liabilities arising under the Securities
     Act of 1933 may be permitted to directors, officers and controlling
     persons of the registrants pursuant to the foregoing provisions, or
     otherwise, the registrants have been advised that in the opinion of the
     Securities and Exchange SEC such indemnification is against public
     policy as expressed in the Act and is, therefore, unenforceable. In the
     event that a claim for indemnification against such liabilities (other
     than the payment by the registrant of expenses incurred or paid by a
     director, officer or controlling person of the registrant in the
     successful defense of any action, suit or proceeding) is asserted by
     such director, officer or controlling person in connection with the
     securities being registered, the registrants will, unless in the opinion
     of its counsel the matter has been settled by controlling precedent,
     submit to a court of appropriate jurisdiction the question whether such
     indemnification by it is against public policy as expressed in the Act
     and will be governed by the final adjudication of such issue.

                                      II-6
<PAGE>

  4. The undersigned co-registrants hereby undertake

    . to respond to requests for information that is incorporated by
      reference into the prospectus under items 4, 10(b), 11, or 13 of this
      Form, within one business day of receipt of a request, and to send
      the incorporated documents by first-class mail or other equally
      prompt means. This undertaking includes information contained in
      documents filed after the effective date of the registration
      statement through the date of responding to the request

  5. The undersigned co-registrants hereby undertake to supply by means of a
     post effective amendment all information concerning a transaction, and
     the company being acquired therein, that was not the subject of and
     included in the registration statement when it became effective.

                                      II-7
<PAGE>

                                   SIGNATURES

   Pursuant to the requirements of the Securities Act of 1933, Lyondell
Chemical Company certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-4 and has duly caused this
Registration Statement or amendment thereto to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Houston, the State of
Texas, on July 12, 1999.

                                          LYONDELL CHEMICAL COMPANY

                                          By:
                                                  /s/ Dan F. Smith
                                             ----------------------------------
                                              Dan F. Smith
                                              President and Chief Executive
                                               Officer

   Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement or amendment thereto has been signed by the following
persons in the capacities indicated on July 12, 1999.

Signature                                Title


       */s/ William T. Butler            Chairman of the Board
- -------------------------------------

         William T. Butler



        /s/ Dan F. Smith                 President, Chief Executive Officer
- -------------------------------------    and Director
            Dan F. Smith
    (Principal Executive Officer)


         */s/ Carol Anderson             Director
- -------------------------------------
            Carol Anderson



          */s/ Travis Engen              Director
- -------------------------------------
             Travis Engen

   */s/ Stephen F. Hinchliffe, Jr.       Director
- -------------------------------------
      Stephen F. Hinchliffe, Jr.

       */s/ Dudley C. Mecum II           Director
- -------------------------------------
          Dudley C. Mecum II

          */s/ Frank Savage              Director
- -------------------------------------
             Frank Savage

         */s/ Paul R. Staley             Director
- -------------------------------------
            Paul R. Staley


      */s/ Joseph M. Putz                Senior Vice President, Special
- -------------------------------------    Assignments and Acting Chief
           Joseph M. Putz                Financial Officer
    (Principal Financial Officer)


     */s/ Kelvin R. Collard              Controller and Principal Accounting
- -------------------------------------    Officer
          Kelvin R. Collard
   (Principal Accounting Officer)


   /s/ Jeffrey R. Pendergraft
*By: ________________________________
Jeffery R. Pendergraft, as Attorney-
               in-fact

                                      II-8
<PAGE>

                                   SIGNATURES

   Pursuant to the requirements of the Securities Act of 1933, Lyondell
Chemical Worldwide, Inc. certifies that it has reasonable grounds to believe
that it meets all of the requirements for filing on Form S-4 and has duly
caused this Registration Statement or amendment thereto to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 12, 1999.

                                          LYONDELL CHEMICAL WORLDWIDE, INC.

                                          By:
                                                  /s/ Dan F. Smith
                                             ----------------------------------
                                              Dan F. Smith
                                              President

   Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement or amendment thereto has been signed by the following
persons in the capacities indicated on July 12, 1999.

Signature                               Title



       /s/ Dan F. Smith                 President
- ------------------------------------
            Dan F. Smith
   (Principal Executive Officer)



   */s/ Robert J. Millstone             Director
- ------------------------------------
        Robert J. Millstone

      */s/ Edward W. Rich               Director and Treasurer
- ------------------------------------
           Edward W. Rich

      */s/ Joseph M. Putz               Chief Financial Officer
- ------------------------------------
           Joseph M. Putz
   (Principal Financial Officer)

    */s/ Kelvin R. Collard              Controller
- ------------------------------------
         Kelvin R. Collard
   (Principal Accounting Officer)

*By:     /s/ Jeffrey R. Pendergraft

- ------------------------------------

     Jeffrey R. Pendergraft, as
       Attorney-in-fact

                                      II-9
<PAGE>

                                   SIGNATURES

   Pursuant to the requirements of the Securities Act of 1933, Lyondell
Chemical Nederland, Ltd. certifies that it has reasonable grounds to believe
that it meets all of the requirements for filing on Form S-4 and has duly
caused this Registration Statement or amendment thereto to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 12, 1999.

                                          LYONDELL CHEMICAL NEDERLAND, LTD.

                                          By:
                                                  /s/ Morris Gelb
                                             ----------------------------------
                                              Morris Gelb
                                              President

   Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement or amendment thereto has been signed by the following
persons in the capacities indicated on July 12, 1999.

Signature                                Title



        /s/ Morris Gelb                  President
- -------------------------------------
             Morris Gelb
    (Principal Executive Officer)



     */s/ T. Kevin DeNicola              Director
- -------------------------------------
          T. Kevin DeNicola

    */s/ Robert J. Millstone             Director
- -------------------------------------
         Robert J. Millstone

      */s/ Edward W. Rich                Director and Vice President and
- -------------------------------------    Treasurer
           Edward W. Rich

      */s/ Joseph M. Putz                Chief Financial Officer
- -------------------------------------
           Joseph M. Putz
    (Principal Financial Officer)

     */s/ Kelvin R. Collard              Controller
- -------------------------------------
          Kelvin R. Collard
   (Principal Accounting Officer)

*By:    /s/ Edward W. Rich
- -------------------------------------

 Edward W. Rich, as Attorney-in-fact

                                     II-10
<PAGE>

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
 Exhibit No. Description of Exhibit
 <C>         <S>
   **3.1     Amended and Restated Certificate of Incorporation of Lyondell
             Chemical Worldwide, Inc.

   **3.2     Amended and Restated By-Laws of Lyondell Chemical Worldwide, Inc.

   **3.3     Amended and Restated Certificate of Incorporation of Lyondell
             Chemical Nederland, Ltd.

   **3.4     Amended and Restated By-Laws of Lyondell Chemical Nederland, Ltd.

   **4.1     Registration Rights Agreement by and among Lyondell Chemical
             Company, Lyondell Chemical Worldwide, Inc., Lyondell Chemical
             Nederland, Ltd. and Donaldson, Lufkin & Jenrette Securities
             Corporation, J.P. Morgan Securities Inc., Salomon Smith Barney,
             Inc., Chase Securities Inc. and NationsBanc Montgomery Securities
             LLC, dated as of May 17, 1999

   **4.2     Indenture among Lyondell Chemical Company, the Subsidiary
             Guarantors party thereto and The Bank of New York, as Trustee,
             dated as of May 17, 1999, for 9 5/8% Senior Secured Notes,
             Series A, due 2007

   **4.3     Indenture among Lyondell Chemical Company, the Subsidiary
             Guarantors party thereto and The Bank of New York, as Trustee,
             dated as of May 17, 1999, for 9 7/8% Senior Secured Notes,
             Series B, due 2007

   **4.4     Indenture among Lyondell Chemical Company, the Subsidiary
             Guarantors party thereto and The Bank of New York, as Trustee,
             dated as of May 17, 1999, for 10 7/8% Senior Subordinated Notes
             due 2009

   **5       Opinion of Baker & Botts, L.L.P.

   *12       Statement Setting Forth Detail for Computation of Ratio of
             Earnings to Fixed Charges (Filed as an exhibit to Lyondell's
             Annual Report on Form 10-K for the year ended December 31, 1998
             and incorporated herein by reference)

    23.1     Consent of PricewaterhouseCoopers LLP

    23.2     Consent of Deloitte & Touche LLP

    23.3     Consent of Baker & Botts, L.L.P. (included in Exhibit 5)

    24.1     Powers of Attorney for Lyondell Chemical Company

    24.2     Powers of Attorney for Lyondell Chemical Worldwide, Inc.

    24.3     Powers of Attorney for Lyondell Chemical Nederland, Ltd.

  **25.1     Statement of Eligibility under the Trust Indenture Act of 1939, as
             amended, of the Trustee under the Indenture relating to the Series
             A Senior Secured Notes

  **25.2     Statement of Eligibility under the Trust Indenture Act of 1939, as
             amended, of the Trustee under the Indenture relating to the Series
             B Senior Secured Notes

  **25.3     Statement of Eligibility under the Trust Indenture Act of 1939, as
             amended, of the Trustee under the Indenture relating to the Senior
             Subordinated Notes

    99.1     Form of Letter to DTC Participants for 9 5/8% Senior Secured
             Notes, Series A, due 2007

    99.2     Form of Letter to DTC Participants for 9 7/8% Senior Secured
             Notes, Series B, due 2007

    99.3     Form of Letter to DTC Participants for 10 7/8% Senior Subordinated
             Notes due 2009

    99.4     Form of Letter to Clients for 9 5/8% Senior Secured Notes, Series
             A, due 2007
</TABLE>
- --------
*  Incorporated by reference from the filing indicated.

** Previously filed.

                                     II-11
<PAGE>

<TABLE>
<CAPTION>
 Exhibit No. Description of Exhibit

 <C>         <S>
  99.5       Form of Letter to Clients for 9 7/8% Senior Secured Notes, Series
             B, due 2007

  99.6       Form of Letter to Clients for 10 7/8% Senior Subordinated Notes
             due 2009

  99.7       Form of Notice of Guaranteed Delivery for 9 5/8% Senior Secured
             Notes, Series A, due 2007

  99.8       Form of Notice of Guaranteed Delivery for 9 7/8% Senior Secured
             Notes, Series A, due 2007

  99.9       Form of Notice of Guaranteed Delivery for 10 7/8% Senior Secured
             Notes, Series A, due 2009

  99.10      Form of Letter of Transmittal for 9 5/8% Senior Secured Notes,
             Series A, due 2007

  99.11      Form of Letter of Transmittal for 9 7/8% Senior Secured Notes,
             Series B, due 2007

  99.12      Form of Letter of Transmittal for 10 7/8% Senior Subordinated
             Notes due 2009
</TABLE>

                                     II-12

<PAGE>

                                                                    Exhibit 23.1


                      CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the incorporation by reference in this Registration
Statement on Form S-4 of Lyondell Chemical Company (formerly Lyondell
Petrochemical Company) of our report dated February 26, 1999 relating to the
consolidated financial statements appearing on page 53 of Lyondell Chemical
Company's Annual Report on Form 10-K for the year ended December 31, 1998, our
report dated February 26, 1999 relating to the financial statements of Equistar
Chemicals, LP appearing on page 84 of Lyondell Chemical Company's Annual Report
on Form 10-K for the year ended December 31, 1998 and our report dated February
6, 1998 relating to the financial statements of LYONDELL-CITGO Refining LP
(formerly LYONDELL-CITGO Refining Company Ltd.) appearing on page 107 of
Lyondell Chemical Company's Annual Report on Form 10-K for the year ended
December 31, 1998 and our report dated February 26, 1999 relating to the
consolidated financial statements of Lyondell Chemical Company appearing in
Lyondell Chemical Company's Current Report on Form 8-K dated June 29, 1999. We
also consent to the reference to us under the heading "Experts" in such
Registration Statement.


PRICEWATERHOUSECOOPERS LLP

Houston, Texas
July 12, 1999

                                       1

<PAGE>

                                                                    EXHIBIT 23.2

                         INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in this Amendment No. 1 to
Registration Statement No. 333-81831 of Lyondell Chemical Company, Lyondell
Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd. on Form S-4 of
our report dated February 11, 1999, on the financial statements of LYONDELL-
CITGO Refining LP, appearing in the Annual Report on Form 10-K of Lyondell
Chemical Company for the year ended December 31, 1998, and to the reference to
us under the heading "Experts" in the Prospectus, which is part of such
Registration Statement.

DELOITTE & TOUCHE LLP

Houston, Texas
July 12, 1999

<PAGE>

                                                                    EXHIBIT 24.1

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
27th day of June, 1999.


                                           /s/ William T. Butler
                                           ----------------------------
                                           WILLIAM T. BUTLER
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ Carol Anderson
                                           ----------------------------
                                           CAROL ANDERSON

<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
28th day of June, 1999.


                                           /s/ Travis Engen
                                           ----------------------------
                                           TRAVIS ENGEN
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ STEPHEN F. HINCHLIFFE, JR.
                                           --------------------------------
                                           STEPHEN F. HINCHLIFFE, JR.
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ Dudley C. Mecum II
                                           ----------------------------
                                           DUDLEY C. MECUM II
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ Frank Savage
                                           ----------------------------
                                           FRANK SAVAGE
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
28th day of June, 1999.


                                           /s/ PAUL R. STALEY
                                           ----------------------------
                                           PAUL R. STALEY
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ DAN F. SMITH
                                           ----------------------------
                                           DAN F. SMITH
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ KELVIN R. COLLARD
                                           ----------------------------
                                           KELVIN R. COLLARD
<PAGE>

                           LYONDELL CHEMICAL COMPANY

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL COMPANY, a Delaware corporation (the "Company"),
intends to file with the Securities and Exchange Commission (the "Commission")
under the Securities Act of 1933, as amended (the "Act"), a Registration
Statement on Form S-4, including a prospectus, with such amendment or amendments
thereto, whether pre-effective or post-effective, in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
having relation to said Registration Statement (collectively, the "Registration
Statement"), in connection with the Company's proposal to offer to exchange up
to $900,000,000 aggregate principal amount of 9 5/8% senior secured notes,
series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior secured
notes, series B, and $500,000,000 aggregate principal amount of 10 7/8% senior
subordinated notes, registered under the Act, for like aggregate principal
amounts of outstanding senior secured notes, series A, senior secured notes,
series B, and senior subordinated notes.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                           /s/ JOSEPH M. PUTZ
                                           ----------------------------
                                           JOSEPH M. PUTZ

<PAGE>

                                                                    EXHIBIT 24.2

                       LYONDELL CHEMICAL WORLDWIDE, INC.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL WORLDWIDE, INC., a Delaware corporation (the
"Company"), a direct wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                            /s/ DAN F. SMITH
                                            -----------------------------
                                            DAN F. SMITH
<PAGE>

                       LYONDELL CHEMICAL WORLDWIDE, INC.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL WORLDWIDE, INC., a Delaware corporation (the
"Company"), a direct wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                            /s/ ROBERT J. MILLSTONE
                                            -----------------------------
                                            ROBERT J. MILLSTONE

<PAGE>

                       LYONDELL CHEMICAL WORLDWIDE, INC.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL WORLDWIDE, INC., a Delaware corporation (the
"Company"), a direct wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                            /s/ EDWARD W. RICH
                                            -----------------------------
                                            EDWARD W. RICH
<PAGE>

                       LYONDELL CHEMICAL WORLDWIDE, INC.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL WORLDWIDE, INC., a Delaware corporation (the
"Company"), a direct wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                            /s/ KELVIN R. COLLARD
                                            -----------------------------
                                            KELVIN R. COLLARD
<PAGE>

                       LYONDELL CHEMICAL WORLDWIDE, INC.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL WORLDWIDE, INC., a Delaware corporation (the
"Company"), a direct wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                            /s/ JOSEPH M. PUTZ
                                            -----------------------------
                                            JOSEPH M. PUTZ


<PAGE>

                                                                    EXHIBIT 24.3

                       LYONDELL CHEMICAL NEDERLAND, LTD.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL NEDERLAND, LTD., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                              /s/ MORRIS GELB
                                              ----------------------------
                                              MORRIS GELB
<PAGE>

                       LYONDELL CHEMICAL NEDERLAND, LTD.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL NEDERLAND, LTD., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                              /s/ ROBERT J. MILLSTONE
                                              ----------------------------
                                              ROBERT J. MILLSTONE

<PAGE>

                       LYONDELL CHEMICAL NEDERLAND, LTD.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL NEDERLAND, LTD., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                              /s/ T. KEVIN DENICOLA
                                              ----------------------------
                                              T. KEVIN DENICOLA
<PAGE>

                       LYONDELL CHEMICAL NEDERLAND, LTD.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL NEDERLAND, LTD., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with the Lyondell's proposal to offer
to exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior
secured notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8%
senior secured notes, series B, and $500,000,000 aggregate principal amount of
10 7/8% senior subordinated notes, registered under the Act and guaranteed by
the Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                              /s/ KELVIN R. COLLARD
                                              ----------------------------
                                              KELVIN R. COLLARD
<PAGE>

                       LYONDELL CHEMICAL NEDERLAND, LTD.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL NEDERLAND, LTD., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                              /s/ EDWARD W. RICH
                                              ----------------------------
                                              EDWARD W. RICH
<PAGE>

                       LYONDELL CHEMICAL NEDERLAND, LTD.

                               POWER OF ATTORNEY

     WHEREAS, LYONDELL CHEMICAL NEDERLAND, LTD., a Delaware corporation (the
"Company"), an indirect wholly owned subsidiary of Lyondell Chemical Company
("Lyondell"), intends to file with the Securities and Exchange Commission (the
"Commission") under the Securities Act of 1933, as amended (the "Act"), a
Registration Statement on Form S-4, including a prospectus, with such amendment
or amendments thereto, whether pre-effective or post-effective, in each case as
may be necessary or appropriate, together with any and all exhibits and other
documents having relation to said Registration Statement (collectively, the
"Registration Statement"), in connection with Lyondell's proposal to offer to
exchange up to $900,000,000 aggregate principal amount of 9 5/8% senior secured
notes, series A, $1,000,000,000 aggregate principal amount of 9 7/8% senior
secured notes, series B, and $500,000,000 aggregate principal amount of 10 7/8%
senior subordinated notes, registered under the Act and guaranteed by the
Company, for like aggregate principal amounts of outstanding senior secured
notes, series A, senior secured notes, series B, and senior subordinated notes
guaranteed by the Company.

     NOW, THEREFORE, the undersigned, in his or her capacity as a director or
officer, or both, as the case may be, of the Company, does hereby appoint DAN F.
SMITH, JEFFREY R. PENDERGRAFT and EDWARD W. RICH, and each of them severally,
his or her true and lawful attorneys or attorney with power to act with or
without the others and with full power of substitution and resubstitution, to
execute in his or her name, place and stead, in his or her capacity as a
director or officer or both, as the case may be, of the Company, the
Registration Statement and all instruments necessary or incidental in connection
therewith, with such amendment or amendments thereto in each case as may be
necessary or appropriate, together with any and all exhibits and other documents
relating thereto as said attorneys or any of them shall deem necessary or
incidental in connection therewith, and to file the same or cause the same to be
filed with the Commission.  Each of said attorneys shall have full power and
authority to do and perform in the name and on behalf of the undersigned, in any
and all capacities, every act whatsoever necessary or desirable to be done to
the premises, as fully and to all intents and purposes as the undersigned might
or could do in person, the undersigned hereby ratifying and approving the acts
of said attorneys and each of them.

     IN WITNESS WHEREOF, the undersigned has executed this instrument on this
29th day of June, 1999.


                                              /s/ JOSEPH M. PUTZ
                                              ----------------------------
                                              JOSEPH M. PUTZ


<PAGE>

                                                                    EXHIBIT 99.1


                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                                   LETTER TO
                   THE DEPOSITORY TRUST COMPANY PARTICIPANTS

                                      FOR

                           TENDER OF ALL OUTSTANDING

                         9 5/8% SENIOR SECURED NOTES,
                             SERIES A, DUE 2007 IN
                            EXCHANGE FOR REGISTERED
                         9 5/8% SENIOR SECURED NOTES,
                              SERIES A, DUE 2007

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON __________,
1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES TENDERED IN THE
EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M., NEW YORK CITY
TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.

To Depository Trust Company Participants:

     We are enclosing herewith the materials listed below relating to the offer
by Lyondell Chemical Company (the "Issuer"), Lyondell Chemical Worldwide, Inc.
and Lyondell Chemical Nederland, Ltd. (together, the "Subsidiary Guarantors") to
exchange (the "Exchange Offer") 9 5/8% Senior Secured Notes, Series A, Due 2007
(the "New Notes"), the issuance of which has been registered under the
Securities Act of 1933, as amended (the "Securities Act"), for a like principal
amount of the issued and outstanding unregistered 9 5/8% Senior Secured Notes,
Series A, Due 2007 (the "Outstanding Notes"), upon the terms and subject to the
conditions set forth in the prospectus dated _______________, 1999 (the
"Prospectus") and the related Letter of Transmittal.

     THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE
ITS UNREGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8%
SENIOR SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY. PARTICIPANTS IN THE DEPOSITORY TRUST
COMPANY ALSO HOLDING THE ISSUER'S 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE
2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO WISH TO PARTICIPATE IN
THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO SUCH NOTES WILL NEED TO
COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION RELATING TO SUCH NOTES.

     We are enclosing copies of the following documents:

          1.  Prospectus dated ____________, 1999

          2.  Letter of Transmittal (together with accompanying Substitute Form
              W-9 Guidelines)

          3.  Notice of Guaranteed Delivery

          4.  Letter of instructions that may be sent to your clients for whose
              account you hold Outstanding Notes in your name or in the name of
              your nominee, with space provided for obtaining such client's
              instructions with regard to the Exchange Offer.
<PAGE>

     We urge you to contact your clients promptly.  Please note that the
Exchange Offer will expire at 5:00 p.m., New York City time, on ____________,
1999, unless extended.

     The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Outstanding Notes being tendered for exchange or upon the consummation
of any other Exchange Offer.

     Pursuant to the Letter of Transmittal, each holder of Outstanding Notes
will represent to the Issuer that

     .    any New Notes received are being acquired in the ordinary course of
          business of the person receiving such New Notes;

     .    such person does not have an arrangement or understanding with any
          person to participate in the distribution of the Outstanding Notes or
          the New Notes within the meaning of the Securities Act;

     .    such person is not an "affiliate," as defined in Rule 405 under the
          Securities Act, of the Issuer or a broker-dealer tendering Outstanding
          Notes acquired directly from the Issuer for its own-account; and

     .    if such person is not a broker-dealer, or is a broker-dealer but will
          not receive New Notes for its own account in exchange for Outstanding
          Notes, it is not engaged in, and does not intend to participate in, a
          distribution of New Notes.

     If such person is a broker-dealer that will receive New Notes for its own
account in exchange for Outstanding Notes, it represents that the Outstanding
Notes to be exchanged for New Notes were acquired as a result of market-making
activities or other trading activities, and it will acknowledge that it will
deliver a Prospectus in connection with any resale of such New Notes; however,
by so acknowledging and by delivering a Prospectus, it will not be deemed to
admit that it is an "underwriter" within the meaning of the Securities Act.

     The enclosed letter to clients contains an authorization by the beneficial
owners of the Outstanding Notes for you to make the foregoing representations.

     The Issuer will not pay any fee or commission to any broker or dealer or to
any other person (other than the Exchange Agent) in connection with the
solicitation of tenders of Outstanding Notes pursuant to the Exchange Offer.
The Issuer will pay or cause to be paid any transfer taxes payable on the
transfer of Outstanding Notes to it, except as otherwise provided in Instruction
7 of the enclosed Letter of Transmittal.

     Additional copies of the enclosed material may be obtained from us.

                                    Very truly yours,

                                    Lyondell Chemical Company



                                       2

<PAGE>

                                                                    EXHIBIT 99.2


                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                                   LETTER TO
                     DEPOSITORY TRUST COMPANY PARTICIPANTS

                                      FOR

                           TENDER OF ALL OUTSTANDING

                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007
                          IN EXCHANGE FOR REGISTERED
                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M.,
NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.

To Depository Trust Company Participants:

     We are enclosing herewith the materials listed below relating to the offer
by Lyondell Chemical Company (the "Issuer"), Lyondell Chemical Worldwide, Inc.
and Lyondell Chemical Nederland, Ltd. (together, the "Subsidiary Guarantors") to
exchange (the "Exchange Offer") 9 7/8% Senior Secured Notes, Series B, Due 2007
(the "New Notes"), the issuance of which has been registered under the
Securities Act of 1933, as amended (the "Securities Act"), for a like principal
amount of the issued and outstanding unregistered 9 7/8% Senior Secured Notes,
Series B, Due 2007 (the "Outstanding Notes"), upon the terms and subject to the
conditions set forth in the prospectus dated _______________, 1999 (the
"Prospectus") and the related Letter of Transmittal.

     THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE
ITS UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8%
SENIOR SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY. PARTICIPANTS IN THE DEPOSITORY TRUST
COMPANY ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE
2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO WISH TO PARTICIPATE IN
THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO SUCH NOTES WILL NEED TO
COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION RELATING TO SUCH NOTES.

     We are enclosing copies of the following documents:

          1.  Prospectus dated ____________, 1999

          2.  Letter of Transmittal (together with accompanying Substitute Form
              W-9 Guidelines)

          3.  Notice of Guaranteed Delivery

          4.  Letter of instructions that may be sent to your clients for whose
              account you hold Outstanding Notes in your name or in the name of
              your nominee, with space provided for obtaining such client's
              instructions with regard to the Exchange Offer.
<PAGE>

     We urge you to contact your clients promptly.  Please note that the
Exchange Offer will expire at 5:00 p.m., New York City time, on ____________,
1999, unless extended.

     The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Outstanding Notes being tendered for exchange or upon the consummation
of any other Exchange Offer.

     Pursuant to the Letter of Transmittal, each holder of Outstanding Notes
will represent to the Issuer that

     .    any New Notes received are being acquired in the ordinary course of
          business of the person receiving such New Notes;

     .    such person does not have an arrangement or understanding with any
          person to participate in the distribution of the Outstanding Notes or
          the New Notes within the meaning of the Securities Act;

     .    such person is not an "affiliate," as defined in Rule 405 under the
          Securities Act, of the Issuer or a broker-dealer tendering Outstanding
          Notes acquired directly from the Issuer for its own account; and

     .    if such person is not a broker-dealer or is a broker-dealer but will
          not receive New Notes for its own account in exchange for Outstanding
          Notes, it is not engaged in, and does not intend to participate in, a
          distribution of New Notes.

     If such person is a broker-dealer that will receive New Notes for its own
account in exchange for Outstanding Notes, it represents that the Outstanding
Notes to be exchanged for New Notes were acquired as a result of market-making
activities or other trading activities, and it will acknowledge that it will
deliver a Prospectus in connection with any resale of such New Notes; however,
by so acknowledging and by delivering a Prospectus, it will not be deemed to
admit that it is an "underwriter" within the meaning of the Securities Act.

     The enclosed letter to clients contains an authorization by the beneficial
owners of the Outstanding Notes for you to make the foregoing representations.

     The Issuer will not pay any fee or commission to any broker or dealer or to
any other person (other than the Exchange Agent) in connection with the
solicitation of tenders of Outstanding Notes pursuant to the Exchange Offer.
The Issuer will pay or cause to be paid any transfer taxes payable on the
transfer of Outstanding Notes to it, except as otherwise provided in Instruction
7 of the enclosed Letter of Transmittal.

     Additional copies of the enclosed material may be obtained from us.

                                    Very truly yours,

                                    Lyondell Chemical Company


                                       2

<PAGE>

                                                                    EXHIBIT 99.3


                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                                   LETTER TO
                   THE DEPOSITORY TRUST COMPANY PARTICIPANTS

                                      FOR

                           TENDER OF ALL OUTSTANDING

                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009
                          IN EXCHANGE FOR REGISTERED
                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M.,
NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.

To Depository Trust Company Participants:

     We are enclosing herewith the materials listed below relating to the offer
by Lyondell Chemical Company (the "Issuer"), Lyondell Chemical Worldwide, Inc.
and Lyondell Chemical Nederland, Ltd. (together, the "Subsidiary Guarantors") to
exchange (the "Exchange Offer") 10 7/8% Senior Subordinated Notes Due 2009 (the
"New Notes"), the issuance of which has been registered under the Securities Act
of 1933, as amended (the "Securities Act"), for a like principal amount of the
issued and outstanding unregistered 10 7/8% Senior Subordinated Notes Due 2009
(the "Outstanding Notes"), upon the terms and subject to the conditions set
forth in the prospectus dated _______________, 1999 (the "Prospectus") and the
related Letter of Transmittal.

     THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE
ITS UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8%
SENIOR SECURED NOTES, SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF
ITS REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007, RESPECTIVELY. PARTICIPANTS IN THE DEPOSITORY
TRUST COMPANY ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR SECURED NOTES, SERIES A,
DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 WHO WISH TO
PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO SUCH NOTES
WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION RELATING TO SUCH
NOTES.

     We are enclosing copies of the following documents:

          1.  Prospectus dated ____________, 1999

          2.  Letter of Transmittal (together with accompanying Substitute Form
              W-9 Guidelines)

          3.  Notice of Guaranteed Delivery

          4.  Letter of instructions that may be sent to your clients for whose
              account you hold Outstanding Notes in your name or in the name of
              your nominee, with space provided for obtaining such client's
              instructions with regard to the Exchange Offer.
<PAGE>

     We urge you to contact your clients promptly.  Please note that the
Exchange Offer will expire at 5:00 p.m., New York City time, on ____________,
1999, unless extended.

     The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Outstanding Notes being tendered for exchange or upon the consummation
of any other Exchange Offer.

     Pursuant to the Letter of Transmittal, each holder of Outstanding Notes
will represent to the Issuer that

     .    any New Notes received are being acquired in the ordinary course of
          business of the person receiving such New Notes;

     .    such person does not have an arrangement or understanding with any
          person to participate in the distribution of the Outstanding Notes or
          the New Notes within the meaning of the Securities Act;

     .    such person is not an "affiliate," as defined in Rule 405 under the
          Securities Act, of the Issuer or a broker-dealer tendering Outstanding
          Notes acquired directly from the Issuer for its own account; and

     .    if such person is not a broker-dealer or is a broker-dealer but will
          not receive New Notes for its own account in exchange for Outstanding
          Notes, it is not engaged in, and does not intend to participate in, a
          distribution of New Notes.

     If such person is a broker-dealer that will receive New Notes for its own
account in exchange for Outstanding Notes, it represents that the Outstanding
Notes to be exchanged for New Notes were acquired as a result of market-making
activities or other trading activities, and it will acknowledge that it will
deliver a Prospectus in connection with any resale of such New Notes; however,
by so acknowledging and by delivering a Prospectus, it will not be deemed to
admit that it is an "underwriter" within the meaning of the Securities Act.

     The enclosed letter to clients contains an authorization by the beneficial
owners of the Outstanding Notes for you to make the foregoing representations.

     The Issuer will not pay any fee or commission to any broker or dealer or to
any other person (other than the Exchange Agent) in connection with the
solicitation of tenders of Outstanding Notes pursuant to the Exchange Offer.
The Issuer will pay or cause to be paid any transfer taxes payable on the
transfer of Outstanding Notes to it, except as otherwise provided in Instruction
7 of the enclosed Letter of Transmittal.

     Additional copies of the enclosed material may be obtained from us.

                                    Very truly yours,

                                    Lyondell Chemical Company




                                       2

<PAGE>

                                                                    EXHIBIT 99.4

                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                               LETTER TO CLIENTS
                                      FOR
                           TENDER OF ALL OUTSTANDING

                         9 5/8% SENIOR SECURED NOTES,
                              SERIES A, DUE 2007
                          IN EXCHANGE FOR REGISTERED
                         9 5/8% SENIOR SECURED NOTES,
                              SERIES A, DUE 2007

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON __________,
1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES TENDERED IN THE
EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME BEFORE 5:00 P.M., NEW YORK CITY
TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.

To Our Clients:

     We are enclosing with this letter a prospectus dated       , 1999 (the
"Prospectus") of Lyondell Chemical Company (the "Issuer"), Lyondell Chemical
Worldwide, Inc. and Lyondell Chemical Nederland, Ltd. (together, the "Subsidiary
Guarantors") and the related Letter of Transmittal.  These two documents
together constitute the Issuer's offer to exchange (the "Exchange Offer") 9 5/8%
Senior Secured Notes, Series A, Due 2007 (the "New Notes"), the issuance of
which has been registered under the Securities Act of 1933, as amended (the
"Securities Act"), for a like principal amount of issued and outstanding
unregistered 9 5/8% Senior Secured Notes, Series A, Due 2007 (the "Outstanding
Notes").

     THIS LETTER TO CLIENTS AND RELATED DOCUMENTS PERTAIN ONLY TO THE ISSUER'S
OFFER TO EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007. THE
ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY. CLIENTS ALSO HOLDING THE ISSUER'S
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Outstanding Notes of that series being tendered for exchange or upon
the consummation of any other Exchange Offer.

     We are the holder of record of Outstanding Notes held by us for your own
account.  A tender of your Outstanding Notes held by us can be made only by us
as the record holder according to your instructions.  The Letter of Transmittal
is furnished to you for your information only and cannot be used by you to
tender Outstanding Notes held by us for your account.
<PAGE>

     We request instructions as to whether you wish to tender any or all of the
Outstanding Notes held by us for your account under the terms and conditions of
the Exchange Offer.  We also request that you confirm that we may, on your
behalf, make the representations contained in the Letter of Transmittal.

     Under the Letter of Transmittal, each holder of Outstanding Notes will
represent to the Issuer that:

      (i) any New Notes received are being acquired in the ordinary course of
          business of the person receiving such New Notes;

     (ii) such person does not have an arrangement or understanding with any
          person to participate in the distribution of the Outstanding Notes or
          the New Notes within the meaning of the Securities Act;

    (iii) such person is not an "affiliate," as defined in Rule 405 under the
          Securities Act, of the Issuer or a broker-dealer tendering Outstanding
          Notes acquired directly from the Issuer for its own account;

     (iv) if such person is not a broker-dealer or is a broker-dealer but will
          not receive New Notes for its own account in exchange for Outstanding
          Notes, it is not engaged in, and does not intend to participate in, a
          distribution of New Notes; and

      (v) if such person is a broker-dealer who will receive New Notes for its
          own account in exchange for Outstanding Notes, it will represent that
          the Outstanding Notes to be exchanged for New Notes were acquired as a
          result of market-making activities or other trading activities, and it
          will acknowledge that it will deliver a Prospectus in connection with
          any resale of those New Notes; however, by so acknowledging and by
          delivering a Prospectus, it will not be deemed to admit that it is an
          "underwriter" within the meaning of the Securities Act.


                              Very truly yours,

                                       2
<PAGE>

PLEASE RETURN YOUR INSTRUCTIONS TO US IN THE ENCLOSED ENVELOPE WITHIN AMPLE TIME
   TO PERMIT US TO SUBMIT A TENDER ON YOUR BEHALF BEFORE THE EXPIRATION DATE.


                                 INSTRUCTION TO
                            DTC TRANSFER PARTICIPANT

                To Participant of The Depository Trust Company:

     The undersigned hereby acknowledges receipt and review of the prospectus
dated     , 1999 (the "Prospectus") of Lyondell Chemical Company (the "Issuer"),
Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd.
(together, the "Subsidiary Guarantors") and the related Letter of Transmittal.
These two documents together constitute the Issuer's offer to exchange (the
"Exchange Offer") 9 5/8% Senior Secured Notes, Series A, Due 2007 (the "New
Notes"), the issuance of which has been registered under the Securities Act of
1933, as amended (the "Securities Act"), for a like principal amount of issued
and outstanding unregistered 9 5/8% Senior Secured Notes, Series A, Due 2007
(the "Outstanding Notes").

     THIS LETTER TO CLIENTS AND RELATED DOCUMENTS PERTAIN ONLY TO THE ISSUER'S
OFFER TO EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007. THE
ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY. CLIENTS ALSO HOLDING THE ISSUER'S
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     This will instruct you, the registered holder and DTC participant, as to
the action to be taken by you relating to the Exchange Offer for the Outstanding
Notes held by you for the account of the undersigned.

     The aggregate principal amount of the Outstanding Notes of each series held
by you for the account of the undersigned is (fill in amount):

          Title of Series                       Principal Amount
          ---------------                       ----------------
9 5/8% Senior Secured Notes, Series
 A, Due 2007

     WITH RESPECT TO THE EXCHANGE OFFER, THE UNDERSIGNED HEREBY INSTRUCTS YOU
(CHECK APPROPRIATE BOX):

[ ]  TO TENDER ALL OUTSTANDING NOTES HELD BY YOU FOR THE ACCOUNT OF THE
     UNDERSIGNED.

[ ]  TO TENDER THE FOLLOWING AMOUNT OF OUTSTANDING NOTES HELD BY YOU FOR THE
     ACCOUNT OF THE UNDERSIGNED:

          Title of Series                       Principal Amount Tendered
          ---------------                       -------------------------
9 5/8% Senior Secured Notes, Series
 A, Due 2007

[ ]  NOT TO TENDER ANY OUTSTANDING NOTES HELD BY YOU FOR THE ACCOUNT OF THE
     UNDERSIGNED.

                                       3
<PAGE>

     IF NO BOX IS CHECKED, A SIGNED AND RETURNED INSTRUCTION TO DTC PARTICIPANT
WILL BE DEEMED TO INSTRUCT YOU TO TENDER ALL OUTSTANDING NOTES HELD BY YOU FOR
THE ACCOUNT OF THE UNDERSIGNED.

     If the undersigned instructs you to tender the Outstanding Notes held by
you for the account of the undersigned, it is understood that you are authorized
to make, on behalf of the undersigned (and the undersigned, by its signature
below, hereby makes to you), the representations contained in the Letter of
Transmittal that are to be made with respect to the undersigned as a beneficial
owner, including, but not limited to, the representations that:

     (i) any New Notes received are being acquired in the ordinary course of
         business of the undersigned;

    (ii) the undersigned does not have an arrangement or understanding with any
         person to participate in the distribution of the Outstanding Notes or
         the New Notes within the meaning of the Securities Act;

   (iii) the undersigned is not an "affiliate," as defined in Rule 405 under the
         Securities Act, of the Issuer or a broker-dealer tendering Outstanding
         Notes acquired directly from the Issuer for its own account;

    (iv) if the undersigned is not a broker-dealer or is a broker-dealer but
         will not receive New Notes for its own account in exchange for
         Outstanding Notes, it is not engaged in, and does not intend to
         participate in, a distribution of New Notes; and

     (v) if the undersigned is a broker-dealer that will receive New Notes for
         its own account in exchange for Outstanding Notes, it will represent
         that the Outstanding Notes to be exchanged for New Notes were acquired
         as a result of market-making activities or other trading activities,
         and it will acknowledge that it will deliver a Prospectus in connection
         with any resale of those New Notes; however, by so acknowledging and by
         delivering a Prospectus, the undersigned will not be deemed to admit
         that it is an "underwriter" within the meaning of the Securities Act.

                                   SIGN HERE

Name of beneficial owner(s):
                            -------------------------------------------------

Signature(s):
             ----------------------------------------------------------------

Name(s) (please print):
                       ------------------------------------------------------

Address:
        ---------------------------------------------------------------------

Telephone Number:
                 ------------------------------------------------------------

Taxpayer Identification or Social Security Number:
                                                  ---------------------------

Date:
     ------------------------------------------------------------------------

                                       4

<PAGE>

                                                                    EXHIBIT 99.5

                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                               LETTER TO CLIENTS
                                      FOR
                           TENDER OF ALL OUTSTANDING

                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007
                          IN EXCHANGE FOR REGISTERED
                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007


- --------------------------------------------------------------------------------
THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
 ____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
 TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME BEFORE 5:00 P.M.,
 NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.
- --------------------------------------------------------------------------------


To Our Clients:

     We are enclosing with this letter a prospectus dated ____________, 1999
(the "Prospectus") of Lyondell Chemical Company (the "Issuer"), Lyondell
Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd. (together, the
"Subsidiary Guarantors") and the related Letter of Transmittal. These two
documents together constitute the Issuer's offer to exchange (the "Exchange
Offer") 9 7/8% Senior Secured Notes, Series B, Due 2007 (the "New Notes"), the
issuance of which has been registered under the Securities Act of 1933, as
amended (the "Securities Act"), for a like principal amount of issued and
outstanding unregistered 9 7/8% Senior Secured Notes, Series B, Due 2007 (the
"Outstanding Notes").

     THIS LETTER TO CLIENTS AND RELATED DOCUMENTS PERTAIN ONLY TO THE ISSUER'S
OFFER TO EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007. THE
ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY. CLIENTS ALSO HOLDING THE ISSUER'S
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     The Exchange Offer is not conditioned upon any minimum aggregate principal
amount of Outstanding Notes being tendered for exchange or upon the consummation
of any other Exchange Offer.

     We are the holder of record of Outstanding Notes held by us for your own
account.  A tender of your Outstanding Notes held by us can be made only by us
as the record holder according to your instructions.  The Letter of Transmittal
is furnished to you for your information only and cannot be used by you to
tender Outstanding Notes held by us for your account.
<PAGE>

     We request instructions as to whether you wish to tender any or all of the
Outstanding Notes held by us for your account under the terms and conditions of
the Exchange Offer.  We also request that you confirm that we may, on your
behalf, make the representations contained in the Letter of Transmittal.

     Under the Letter of Transmittal, each holder of Outstanding Notes will
represent to the Issuer that:

     (i)    any New Notes received are being acquired in the ordinary course of
     business of the person receiving such New Notes;

     (ii)   such person does not have an arrangement or understanding with any
     person to participate in the distribution of the Outstanding Notes or the
     New Notes within the meaning of the Securities Act;

     (iii)  such person is not an "affiliate," as defined in Rule 405 under the
     Securities Act, of the Issuer or a broker-dealer tendering Outstanding
     Notes acquired directly from the Issuer for its own account;

     (iv)   if such person is not a broker-dealer or is a broker-dealer but will
     not receive New Notes for its own account in exchange for Outstanding
     Notes, it is not engaged in, and does not intend to participate in, a
     distribution of New Notes; and

     (v)    if such person is a broker-dealer who will receive New Notes for its
     own account in exchange for Outstanding Notes, it will represent that the
     Outstanding Notes to be exchanged for New Notes were acquired as a result
     of market-making activities or other trading activities, and it will
     acknowledge that it will deliver a Prospectus in connection with any resale
     of those New Notes; however, by so acknowledging and by delivering a
     Prospectus, it will not be deemed to admit that it is an "underwriter"
     within the meaning of the Securities Act.


                              Very truly yours,

                                       2
<PAGE>

PLEASE RETURN YOUR INSTRUCTIONS TO US IN THE ENCLOSED ENVELOPE WITHIN AMPLE TIME
  TO PERMIT US TO SUBMIT A TENDER ON YOUR BEHALF BEFORE THE EXPIRATION DATE.


                                INSTRUCTION TO
                           DTC TRANSFER PARTICIPANT

                To Participant of The Depository Trust Company:

     The undersigned hereby acknowledges receipt and review of the prospectus
dated ____________, 1999 (the "Prospectus") of Lyondell Chemical Company (the
"Issuer"), Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland,
Ltd. (together, the "Subsidiary Guarantors") and the related Letter of
Transmittal. These two documents together constitute the Issuer's offer to
exchange (the "Exchange Offer") 9 7/8% Senior Secured Notes, Series B, Due 2007
(the "New Notes"), the issuance of which has been registered under the
Securities Act of 1933, as amended (the "Securities Act"), for a like principal
amount of issued and outstanding unregistered 9 7/8% Senior Secured Notes,
Series B, Due 2007 (the "Outstanding Notes").

     THIS LETTER TO CLIENTS AND RELATED DOCUMENTS PERTAIN ONLY TO THE ISSUER'S
OFFER TO EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007. THE
ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY. CLIENTS ALSO HOLDING THE ISSUER'S
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     This will instruct you, the registered holder and DTC participant, as to
the action to be taken by you relating to the Exchange Offer for the Outstanding
Notes held by you for the account of the undersigned.

     The aggregate principal amount of the Outstanding Notes held by you for the
account of the undersigned is (fill in amount):

- --------------------------------------------------------------------------------
          Title of Series                 Principal Amount
- --------------------------------------------------------------------------------
9 7/8% Senior Secured Notes, Series
B, Due 2007
- --------------------------------------------------------------------------------

     WITH RESPECT TO THE EXCHANGE OFFER, THE UNDERSIGNED HEREBY INSTRUCTS YOU
(CHECK APPROPRIATE BOX):

[_]  TO TENDER ALL OUTSTANDING NOTES HELD BY YOU FOR THE ACCOUNT OF THE
     UNDERSIGNED.

[]   TO TENDER THE FOLLOWING AMOUNT OF OUTSTANDING NOTES HELD BY YOU FOR THE
     ACCOUNT OF THE UNDERSIGNED:

- --------------------------------------------------------------------------------
          Title of Series                 Principal Amount Tendered
- --------------------------------------------------------------------------------
9 7/8% Senior Secured Notes, Series
B, Due 2007
- --------------------------------------------------------------------------------

[_]  NOT TO TENDER ANY OUTSTANDING NOTES HELD BY YOU FOR THE ACCOUNT OF THE
     UNDERSIGNED.

                                       3
<PAGE>

     IF NO BOX IS CHECKED, A SIGNED AND RETURNED INSTRUCTION TO DTC PARTICIPANT
WILL BE DEEMED TO INSTRUCT YOU TO TENDER ALL OUTSTANDING NOTES HELD BY YOU FOR
THE ACCOUNT OF THE UNDERSIGNED.

     If the undersigned instructs you to tender the Outstanding Notes held by
you for the account of the undersigned, it is understood that you are authorized
to make, on behalf of the undersigned (and the undersigned, by its signature
below, hereby makes to you), the representations contained in the Letter of
Transmittal that are to be made with respect to the undersigned as a beneficial
owner, including, but not limited to, the representations that:

     (i)    any New Notes received are being acquired in the ordinary course of
            business of the undersigned;

     (ii)   the undersigned does not have an arrangement or understanding with
            any person to participate in the distribution of the Outstanding
            Notes or the New Notes within the meaning of the Securities Act;

     (iii)  the undersigned is not an "affiliate," as defined in Rule 405 under
            the Securities Act, of the Issuer or a broker-dealer tendering
            Outstanding Notes acquired directly from the Issuer for its own
            account;

     (iv)   if the undersigned is not a broker-dealer or is a broker-dealer but
            will not receive New Notes for its own account in exchange for
            Outstanding Notes, it is not engaged in, and does not intend to
            participate in, a distribution of New Notes; and

     (v)    if the undersigned is a broker-dealer that will receive New Notes
            for its own account in exchange for Outstanding Notes, it will
            represent that the Outstanding Notes to be exchanged for New Notes
            were acquired as a result of market-making activities or other
            trading activities, and it will acknowledge that it will deliver a
            Prospectus in connection with any resale of those New Notes;
            however, by so acknowledging and by delivering a Prospectus, the
            undersigned will not be deemed to admit that it is an "underwriter"
            within the meaning of the Securities Act.

                                   SIGN HERE

Name of beneficial owner(s):____________________________________________________

Signature(s):___________________________________________________________________

Name(s) (please print):_________________________________________________________

Address:________________________________________________________________________

Telephone Number:_______________________________________________________________

Taxpayer Identification or Social Security Number:______________________________

Date:___________________________________________________________________________

                                       4

<PAGE>

                                                                    EXHIBIT 99.6

                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                               LETTER TO CLIENTS
                                      FOR
                           TENDER OF ALL OUTSTANDING

                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009
                          IN EXCHANGE FOR REGISTERED
                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009


- --------------------------------------------------------------------------------
THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
 ____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
 TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME BEFORE 5:00 P.M.,
 NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.
- --------------------------------------------------------------------------------


To Our Clients:

     We are enclosing with this letter a prospectus dated ____________, 1999
(the "Prospectus") of Lyondell Chemical Company (the "Issuer"), Lyondell
Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd. (together, the
"Subsidiary Guarantors") and the related Letter of Transmittal. These two
documents together constitute the Issuer's offer to exchange (the "Exchange
Offer") 10 7/8% Senior Subordinated Notes Due 2009 (the "New Notes"), the
issuance of which has been registered under the Securities Act of 1933, as
amended (the "Securities Act"), for a like principal amount of issued and
outstanding unregistered 10 7/8% Senior Subordinated Notes Due 2009 (the
"Outstanding Notes").

     THIS LETTER TO CLIENTS AND RELATED DOCUMENTS PERTAIN ONLY TO THE ISSUER'S
OFFER TO EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009. THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES,
SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES
B, DUE 2007, RESPECTIVELY. CLIENTS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR
SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE
2007 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS
RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     The Exchange Offer for Outstanding Notes is not conditioned upon any
minimum aggregate principal amount of Outstanding Notes being tendered for
exchange or upon the consummation of any other Exchange Offer.

     We are the holder of record of Outstanding Notes held by us for your own
account. A tender of your Outstanding Notes held by us can be made only by us as
the record holder according to your instructions. The Letter of Transmittal is
furnished to you for your information only and cannot be used by you to tender
Outstanding Notes held by us for your account.
<PAGE>

     We request instructions as to whether you wish to tender any or all of the
Outstanding Notes held by us for your account under the terms and conditions of
the Exchange Offer. We also request that you confirm that we may, on your
behalf, make the representations contained in the Letter of Transmittal.

     Under the Letter of Transmittal, each holder of Outstanding Notes will
represent to the Issuer that:

     (i)    any New Notes received are being acquired in the ordinary course of
            business of the person receiving such New Notes;

     (ii)   such person does not have an arrangement or understanding with any
            person to participate in the distribution of the Outstanding Notes
            or the New Notes within the meaning of the Securities Act;

     (iii)  such person is not an "affiliate," as defined in Rule 405 under the
            Securities Act, of the Issuer or a broker-dealer tendering
            Outstanding Notes acquired directly from the Issuer for its own
            account;

     (iv)   if such person is not a broker-dealer or is a broker-dealer but will
            not receive New Notes for its own account in exchange for
            Outstanding Notes, it is not engaged in, and does not intend to
            participate in, a distribution of New Notes; and

     (v)    if such person is a broker-dealer who will receive New Notes for its
            own account in exchange for Outstanding Notes, it will represent
            that the Outstanding Notes to be exchanged for New Notes were
            acquired as a result of market-making activities or other trading
            activities, and it will acknowledge that it will deliver a
            Prospectus in connection with any resale of those New Notes;
            however, by so acknowledging and by delivering a Prospectus, it will
            not be deemed to admit that it is an "underwriter" within the
            meaning of the Securities Act.


                              Very truly yours,

                                       2
<PAGE>

PLEASE RETURN YOUR INSTRUCTIONS TO US IN THE ENCLOSED ENVELOPE WITHIN AMPLE TIME
  TO PERMIT US TO SUBMIT A TENDER ON YOUR BEHALF BEFORE THE EXPIRATION DATE.


                                INSTRUCTION TO
                           DTC TRANSFER PARTICIPANT

                To Participant of The Depository Trust Company:

     The undersigned hereby acknowledges receipt and review of the prospectus
dated ____________, 1999 (the "Prospectus") of Lyondell Chemical Company (the
"Issuer"), Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland,
Ltd. (together, the "Subsidiary Guarantors") and the related Letter of
Transmittal. These two documents together constitute the Issuer's offer to
exchange (the "Exchange Offer")10 7/8% Senior Subordinated Notes Due 2009 (the
"New Notes"), the issuance of which has been registered under the Securities Act
of 1933, as amended (the "Securities Act"), for a like principal amount of
issued and outstanding unregistered 10 7/8% Senior Secured Notes Due 2009 (the
"Outstanding Notes").

     THIS LETTER TO CLIENTS AND RELATED DOCUMENTS PERTAIN ONLY TO THE ISSUER'S
OFFER TO EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009. THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES,
SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES
B, DUE 2007, RESPECTIVELY. CLIENTS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR
SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE
2007 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS
RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     This will instruct you, the registered holder and DTC participant, as to
the action to be taken by you relating to the Exchange Offer for the Outstanding
Notes held by you for the account of the undersigned.

     The aggregate principal amount of the Outstanding Notes of each series held
by you for the account of the undersigned is (fill in amount):

- --------------------------------------------------------------------------------
        Title of Series                 Principal Amount Tendered
- --------------------------------------------------------------------------------
10 7/8% Senior Subordinated Notes
Due 2009
- --------------------------------------------------------------------------------


     WITH RESPECT TO THE EXCHANGE OFFER, THE UNDERSIGNED HEREBY INSTRUCTS YOU
(CHECK APPROPRIATE BOX):

[_]  TO TENDER ALL OUTSTANDING NOTES HELD BY YOU FOR THE ACCOUNT OF THE
     UNDERSIGNED.

[_]  TO TENDER THE FOLLOWING AMOUNT OF OUTSTANDING NOTES HELD BY YOU FOR THE
     ACCOUNT OF THE UNDERSIGNED:


- --------------------------------------------------------------------------------
        Title of Series                 Principal Amount Tendered
- --------------------------------------------------------------------------------
10 7/8% Senior Subordinated Notes
Due 2009
- --------------------------------------------------------------------------------

[_]  NOT TO TENDER ANY OUTSTANDING NOTES HELD BY YOU FOR THE ACCOUNT OF THE
     UNDERSIGNED.

                                       3
<PAGE>

     IF NO BOX IS CHECKED, A SIGNED AND RETURNED INSTRUCTION TO DTC PARTICIPANT
WILL BE DEEMED TO INSTRUCT YOU TO TENDER ALL OUTSTANDING NOTES HELD BY YOU FOR
THE ACCOUNT OF THE UNDERSIGNED.

     If the undersigned instructs you to tender the Outstanding Notes held by
you for the account of the undersigned, it is understood that you are authorized
to make, on behalf of the undersigned (and the undersigned, by its signature
below, hereby makes to you), the representations contained in the Letter of
Transmittal that are to be made with respect to the undersigned as a beneficial
owner, including, but not limited to, the representations that:

     (i)    any New Notes received are being acquired in the ordinary course of
            business of the undersigned;

     (ii)   the undersigned does not have an arrangement or understanding with
            any person to participate in the distribution of the Outstanding
            Notes or the New Notes within the meaning of the Securities Act;

     (iii)  the undersigned is not an "affiliate," as defined in Rule 405 under
            the Securities Act, of the Issuer or a broker-dealer tendering
            Outstanding Notes acquired directly from the Issuer for its own
            account;

     (iv)   if the undersigned is not a broker-dealer or is a broker-dealer but
            will not receive New Notes for its own account in exchange for
            Outstanding Notes, it is not engaged in, and does not intend to
            participate in, a distribution of New Notes; and

     (v)    if the undersigned is a broker-dealer that will receive New Notes
            for its own account in exchange for Outstanding Notes, it will
            represent that the Outstanding Notes to be exchanged for New Notes
            were acquired as a result of market-making activities or other
            trading activities, and it will acknowledge that it will deliver a
            Prospectus in connection with any resale of those New Notes;
            however, by so acknowledging and by delivering a Prospectus, the
            undersigned will not be deemed to admit that it is an "underwriter"
            within the meaning of the Securities Act.

                                   SIGN HERE

Name of beneficial owner(s):____________________________________________________

Signature(s):___________________________________________________________________

Name(s) (please print):_________________________________________________________

Address:________________________________________________________________________

Telephone Number:_______________________________________________________________

Taxpayer Identification or Social Security Number:______________________________

Date:___________________________________________________________________________

                                       4

<PAGE>

                                                                    EXHIBIT 99.7

                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                         NOTICE OF GUARANTEED DELIVERY

                                      FOR

                           TENDER OF ALL OUTSTANDING

                         9 5/8% SENIOR SECURED NOTES,
                             SERIES A, DUE 2007 IN
                            EXCHANGE FOR REGISTERED
                         9 5/8% SENIOR SECURED NOTES,
                              SERIES A, DUE 2007

     This form, or one substantially equivalent hereto, must be used by a holder
to accept the Exchange Offer of Lyondell Chemical Company (the "Issuer"),
Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd.
(together, the "Subsidiary Guarantors") and to tender outstanding unregistered
9 5/8% Senior Secured Notes, Series A, Due 2007 (the "Outstanding Notes") to The
Bank of New York, as exchange agent (the "Exchange Agent") pursuant to the
guaranteed delivery procedures described in "The Exchange Offers--Guaranteed
Delivery Procedures" of the prospectus dated      , 1999 (the "Prospectus") and
in Instruction 2 to the related Letter of Transmittal. Any holder who wishes to
tender Outstanding Notes pursuant to such guaranteed delivery procedures must
ensure that the Exchange Agent receives this Notice of Guaranteed Delivery,
properly completed and duly executed, prior to the Expiration Date (as defined
below) of the Exchange Offer. Capitalized terms used but not defined herein have
the meanings ascribed to them in the Prospectus or the Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007. THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 7/8%
SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES
DUE 2009, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 7/8% SENIOR SECURED
NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO
WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO
SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION
RELATING TO SUCH NOTES.

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
______________________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE").
OUTSTANDING NOTES TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME
PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE
OFFER.

                 The Exchange Agent for the Exchange Offer is:

                              THE BANK OF NEW YORK

By Courier:             By Mail (registered or certified          By Hand:
                                mail recommended):
 THE BANK OF NEW YORK         THE BANK OF NEW YORK            101 BARCLAY ST.
    101 BARCLAY ST.        101 BARCLAY ST., FLOOR 7E    CORPORATE TRUST SERVICES
CORPORATE TRUST SERVICES       NEW YORK, NY  10286                WINDOW
       WINDOW                  ATTN:  REORG. DEPT.              GROUND LEVEL
    GROUND LEVEL                                            NEW YORK, NY  10286
  NEW YORK, NY  10286                                       ATTN:  REORG. DEPT.
  ATTN:  REORG. DEPT.
<PAGE>

            By Facsimile Transmission (eligible institutions only):

                                 (212) 815-4699
                       Attn:
                            -------------------------

                             Confirm by Telephone:
                                 (212) 815-2742


     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE, OR
TRANSMISSION VIA FACSIMILE TO A NUMBER OTHER THAN AS SET FORTH ABOVE, WILL NOT
CONSTITUTE A VALID DELIVERY.  THE INSTRUCTIONS ACCOMPANYING THIS NOTICE OF
GUARANTEED DELIVERY SHOULD BE READ CAREFULLY BEFORE THE NOTICE OF GUARANTEED
DELIVERY IS COMPLETED.

     THIS NOTICE OF GUARANTEED DELIVERY IS NOT TO BE USED TO GUARANTEE
SIGNATURES.  IF A SIGNATURE ON A LETTER OF TRANSMITTAL IS REQUIRED TO BE
GUARANTEED BY AN "ELIGIBLE INSTITUTION" UNDER THE INSTRUCTIONS THERETO, SUCH
SIGNATURE GUARANTEE MUST APPEAR IN THE APPLICABLE SPACE IN THE BOX PROVIDED ON
THE LETTER OF TRANSMITTAL FOR GUARANTEE OF SIGNATURES.

Ladies and Gentlemen:

     The undersigned hereby tenders to the Issuer, in accordance with the
Issuer's offer, upon the terms and subject to the conditions set forth in the
Prospectus and the related Letter of Transmittal, receipt of which is hereby
acknowledged, the principal amount of Outstanding Notes set forth below pursuant
to the guaranteed delivery procedures set forth in the Prospectus under the
caption "The Exchange Offers--Guaranteed Delivery Procedures" and in Instruction
2 of the Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 7/8%
SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES
DUE 2009, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 7/8% SENIOR SECURED
NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO
WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO
SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION
RELATING TO SUCH NOTES.

                                       2
<PAGE>

     The undersigned hereby tenders the Outstanding Notes listed below:

<TABLE>
<CAPTION>
                              Certificate Number(s) (if known) of
Title of                          Outstanding Notes or Account         Aggregate Principal      Aggregate Principal
 Series                        Number at the Book-entry Facility        Amount Represented         Amount Tendered
- --------                      -----------------------------------      -------------------      -------------------
<S>                             <C>                                   <C>                       <C>

Lyondell Chemical Company
 9 5/8% Senior Secured
 Notes, Series A, Due 2007
</TABLE>

                             PLEASE SIGN AND COMPLETE

- ---------------------------------------  -------------------------------------

- ---------------------------------------  -------------------------------------
Name(s) of Registered Holder(s)          Signatures of Registered Holder(s) or
                                         Authorized Signatory

- ---------------------------------------


- ---------------------------------------
Address
                                         Dated                           , 1999
- ---------------------------------------       ---------------------------
Area Code and Telephone Number(s)

          THIS NOTICE OF GUARANTEED DELIVERY MUST BE SIGNED BY THE REGISTERED
HOLDER(S) OF OUTSTANDING NOTES EXACTLY AS THE NAME(S) OF SUCH PERSON(S)
APPEAR(S) ON CERTIFICATES FOR OUTSTANDING NOTES OR ON A SECURITY POSITION
LISTING AS THE OWNER OF OUTSTANDING NOTES, OR BY PERSON(S) AUTHORIZED TO BECOME
HOLDER(S) BY ENDORSEMENTS AND DOCUMENTS TRANSMITTED WITH THIS NOTICE OF
GUARANTEED DELIVERY.  IF SIGNATURE IS BY A TRUSTEE, EXECUTOR, ADMINISTRATOR,
GUARDIAN, ATTORNEY-IN-FACT, OFFICER OR OTHER PERSON ACTING IN A FIDUCIARY OR
REPRESENTATIVE CAPACITY, SUCH PERSON MUST PROVIDE THE FOLLOWING INFORMATION:

                                       3
<PAGE>

                      Please print name(s) and address(es)

Name(s):

- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------

Capacity:

- ------------------------------------------------------------------------------

Address(es):

- ------------------------------------------------------------------------------

- ------------------------------------------------------------------------------


                                   GUARANTEE

                    (Not to be used for signature guarantee)

          The undersigned, a firm which is a member firm of a registered
national securities exchange or of the National Association of Securities
Dealers, Inc., or is a commercial bank or trust company having an office or
correspondent in the United States, or is otherwise an "eligible guarantor
institution" within the meaning of Rule 17Ad-15 under the Securities Exchange
Act of 1934, hereby guarantees deposit with the Exchange Agent of the Letter of
Transmittal (or facsimile thereof or agent's message in lieu thereof), together
with the Outstanding Notes tendered hereby in proper form for transfer (or
confirmation of the book-entry transfer of such Outstanding Notes into the
Exchange Agent's account at the DTC described in the Prospectus under the
caption "The Exchange Offers--Book-entry Transfer" and in the Letter of
Transmittal) and any other required documents, all by 5:00 p.m., New York City
time, within five New York Stock Exchange trading days following the Expiration
Date for such series.


Name of Firm:
             -----------------------------     -------------------------------
                                               (Authorized Signature)

Address:                                       Name:
        ----------------------------------          --------------------------
                (Include Zip Code)             Title:
                                                     -------------------------
                                                     (Please Type or Print)

Area Code and Telephone Number:
                               -----------------------------------------------

                               Date:                                   , 1999
                                    -----------------------------------


     DO NOT SEND OUTSTANDING NOTES WITH THIS FORM.  ACTUAL SURRENDER OF
OUTSTANDING NOTES MUST BE MADE PURSUANT TO, AND BE ACCOMPANIED BY, A PROPERLY
COMPLETED AND DULY EXECUTED LETTER OF TRANSMITTAL AND ANY OTHER REQUIRED
DOCUMENTS.

                                       4
<PAGE>

                 INSTRUCTIONS FOR NOTICE OF GUARANTEED DELIVERY

     1.   DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY.  A properly completed
and duly executed copy of this Notice of Guaranteed Delivery (or facsimile
hereof or an agent's message and Notice of Guaranteed Delivery in lieu hereof)
and any other documents required by this Notice of Guaranteed Delivery with
respect to the Outstanding Notes must be received by the Exchange Agent at its
address set forth herein prior to the Expiration Date of the Exchange Offer.
THE METHOD OF DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY AND ANY OTHER
REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE ELECTION AND SOLE RISK OF THE
HOLDER, AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE
EXCHANGE AGENT.  If delivery is by mail, registered mail with return receipt
requested, properly insured, is recommended.  As an alternative to delivery by
mail, holders may wish to consider using an overnight or hand delivery service.
In all cases, sufficient time should be allowed to ensure timely delivery.  For
a description of the guaranteed delivery procedures, see Instruction 2 of the
Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 7/8%
SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES
DUE 2009, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 7/8% SENIOR SECURED
NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO
WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO
SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION
RELATING TO SUCH NOTES.

     2.   SIGNATURES ON THIS NOTICE OF GUARANTEED DELIVERY.  If this Notice of
Guaranteed Delivery (or facsimile hereof) is signed by the registered holder(s)
of the Outstanding Notes referred to herein, the signature(s) must correspond
exactly with the name(s) written on the face of the Outstanding Notes without
alteration, enlargement or any change whatsoever.  If this Notice of Guaranteed
Delivery (or facsimile hereof) is signed by a participant of the DTC whose name
appears on a security position listing as the owner of the Outstanding Notes,
the signature must correspond with the name shown on the security position
listing as the owner of the Outstanding Notes.

     If this Notice of Guaranteed Delivery (or facsimile hereof) is signed by a
person other than the registered holder(s) of any Outstanding Notes listed or a
participant of the DTC, this Notice of Guaranteed Delivery must be accompanied
by appropriate bond powers, signed as the name(s) of the registered holder(s)
appear(s) on the Outstanding Notes or signed as the name(s) of the participant
shown on the DTC's security position listing.

     If this Notice of Guaranteed Delivery (or facsimile hereof) is signed by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation, or other person acting in a fiduciary or representative capacity,
such person should so indicate when signing and submit with the Letter of
Transmittal evidence satisfactory to the Exchange Agent of such person's
authority to so act.

     3.   REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Questions and requests
for assistance and requests for additional copies of the Prospectus and this
Notice of Guaranteed Delivery may be directed to the Exchange Agent at the
address set forth on the cover page hereof.  Holders may also contact their
broker, dealer, commercial bank, trust company or other nominee for assistance
concerning the Exchange Offer.

                                       5

<PAGE>

                                                                    EXHIBIT 99.8

                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                         NOTICE OF GUARANTEED DELIVERY

                                      FOR

                           TENDER OF ALL OUTSTANDING

                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007
                          IN EXCHANGE FOR REGISTERED
                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007

     This form, or one substantially equivalent hereto, must be used by a holder
to accept the Exchange Offer of Lyondell Chemical Company (the "Issuer"),
Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd.
(together, the "Subsidiary Guarantors") and to tender outstanding unregistered
9 7/8% Senior Secured Notes, Series B, Due 2007 (the "Outstanding Notes") to The
Bank of New York, as exchange agent (the "Exchange Agent") pursuant to the
guaranteed delivery procedures described in "The Exchange Offers--Guaranteed
Delivery Procedures" of the prospectus dated          , 1999 (the "Prospectus")
and in Instruction 2 to the related Letter of Transmittal. Any holder who wishes
to tender Outstanding Notes pursuant to such guaranteed delivery procedures must
ensure that the Exchange Agent receives this Notice of Guaranteed Delivery,
properly completed and duly executed, prior to the Expiration Date (as defined
below) of the Exchange Offer. Capitalized terms used but not defined herein have
the meanings ascribed to them in the Prospectus or the Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES
DUE 2009, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR SECURED
NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO
WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO
SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION
RELATING TO SUCH NOTES.

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
______________________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE").
OUTSTANDING NOTES TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME
PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE
OFFER.

                 The Exchange Agent for the Exchange Offer is:

                              THE BANK OF NEW YORK

                              By Mail (registered or
      By Courier:          certified mail recommended):          By Hand:

  THE BANK OF NEW YORK         THE BANK OF NEW YORK          101 BARCLAY ST.
    101 BARCLAY ST.        101 BARCLAY ST., FLOOR 7E    CORPORATE TRUST SERVICES
CORPORATE TRUST SERVICES       NEW YORK, NY  10286                WINDOW
        WINDOW                 ATTN:  REORG. DEPT.             GROUND LEVEL
      GROUND LEVEL                                         NEW YORK, NY  10286
   NEW YORK, NY  10286                                      ATTN:  REORG. DEPT.
   ATTN:  REORG. DEPT.
<PAGE>

            By Facsimile Transmission (eligible institutions only):

                                 (212) 815-4699

                       Attn:
                            --------------------------

                             Confirm by Telephone:
                                 (212) 815-2742


     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE, OR
TRANSMISSION VIA FACSIMILE TO A NUMBER OTHER THAN AS SET FORTH ABOVE, WILL NOT
CONSTITUTE A VALID DELIVERY.  THE INSTRUCTIONS ACCOMPANYING THIS NOTICE OF
GUARANTEED DELIVERY SHOULD BE READ CAREFULLY BEFORE THE NOTICE OF GUARANTEED
DELIVERY IS COMPLETED.

     THIS NOTICE OF GUARANTEED DELIVERY IS NOT TO BE USED TO GUARANTEE
SIGNATURES.  IF A SIGNATURE ON A LETTER OF TRANSMITTAL IS REQUIRED TO BE
GUARANTEED BY AN "ELIGIBLE INSTITUTION" UNDER THE INSTRUCTIONS THERETO, SUCH
SIGNATURE GUARANTEE MUST APPEAR IN THE APPLICABLE SPACE IN THE BOX PROVIDED ON
THE LETTER OF TRANSMITTAL FOR GUARANTEE OF SIGNATURES.

Ladies and Gentlemen:

     The undersigned hereby tenders to the Issuer, in accordance with the
Issuer's offer, upon the terms and subject to the conditions set forth in the
Prospectus and the related Letter of Transmittal, receipt of which is hereby
acknowledged, the principal amount of Outstanding Notes set forth below pursuant
to the guaranteed delivery procedures set forth in the Prospectus under the
caption "The Exchange Offers--Guaranteed Delivery Procedures" and in Instruction
2 of the Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES
DUE 2009, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR SECURED
NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO
WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO
SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION
RELATING TO SUCH NOTES.

                                       2
<PAGE>

     The undersigned hereby tenders the Outstanding Notes listed below:

<TABLE>
<CAPTION>

                                    Certificate Number(s) (if known)
                                    of Outstanding Notes or Account        Aggregate Principal      Aggregate Principal
  Title of Series                   Number at the Book-entry Facility       Amount Represented         Amount Tendered
- ------------------                  ---------------------------------      -------------------      --------------------
<S>                                 <C>                                   <C>                       <C>

Lyondell Chemical Company
 9 7/8% Senior Secured
 Notes, Series B, Due 2007
</TABLE>

                           PLEASE SIGN AND COMPLETE


- ---------------------------------------   -------------------------------------

- ---------------------------------------   -------------------------------------
Name(s) of Registered Holder(s)           Signature of Registered Holder(s) or
                                          Authorized Signatory

- ---------------------------------------


- ---------------------------------------
Address
                                          Dated                         , 1999
- ---------------------------------------        -------------------------
Area Code and Telephone Number(s)

          THIS NOTICE OF GUARANTEED DELIVERY MUST BE SIGNED BY THE REGISTERED
HOLDER(S) OF OUTSTANDING NOTES EXACTLY AS THE NAME(S) OF SUCH PERSON(S)
APPEAR(S) ON CERTIFICATES FOR OUTSTANDING NOTES OR ON A SECURITY POSITION
LISTING AS THE OWNER OF OUTSTANDING NOTES, OR BY PERSON(S) AUTHORIZED TO BECOME
HOLDER(S) BY ENDORSEMENTS AND DOCUMENTS TRANSMITTED WITH THIS NOTICE OF
GUARANTEED DELIVERY.  IF SIGNATURE IS BY A TRUSTEE, EXECUTOR, ADMINISTRATOR,
GUARDIAN, ATTORNEY-IN-FACT, OFFICER OR OTHER PERSON ACTING IN A FIDUCIARY OR
REPRESENTATIVE CAPACITY, SUCH PERSON MUST PROVIDE THE FOLLOWING INFORMATION:

                                       3
<PAGE>

                      Please print name(s) and address(es)

Name(s):

- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------

Capacity:

- -------------------------------------------------------------------------------

Address(es):

- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------

                                   GUARANTEE

                    (Not to be used for signature guarantee)

          The undersigned, a firm which is a member firm of a registered
national securities exchange or of the National Association of Securities
Dealers, Inc., or is a commercial bank or trust company having an office or
correspondent in the United States, or is otherwise an "eligible guarantor
institution" within the meaning of Rule 17Ad-15 under the Securities Exchange
Act of 1934, hereby guarantees deposit with the Exchange Agent of the Letter of
Transmittal (or facsimile thereof or agent's message in lieu thereof), together
with the Outstanding Notes tendered hereby in proper form for transfer (or
confirmation of the book-entry transfer of such Outstanding Notes into the
Exchange Agent's account at the DTC described in the Prospectus under the
caption "The Exchange Offers--Book-entry Transfer" and in the Letter of
Transmittal) and any other required documents, all by 5:00 p.m., New York City
time, within five New York Stock Exchange trading days following the Expiration
Date for such series.


Name of Firm:
             ----------------------------   -------------------------------
                                            (Authorized Signature)

Address:                                    Name:
        ---------------------------------        --------------------------
                  (Include Zip Code)        Title:
                                                  -------------------------
                                                    (Please Type or Print)
Area Code and Telephone Number:

- -----------------------------------------   Date:                    , 1999
                                                 --------------------

     DO NOT SEND OUTSTANDING NOTES WITH THIS FORM.  ACTUAL SURRENDER OF
OUTSTANDING NOTES MUST BE MADE PURSUANT TO, AND BE ACCOMPANIED BY, A PROPERLY
COMPLETED AND DULY EXECUTED LETTER OF TRANSMITTAL AND ANY OTHER REQUIRED
DOCUMENTS.

                                       4
<PAGE>

                 INSTRUCTIONS FOR NOTICE OF GUARANTEED DELIVERY

     1.   DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY.  A properly completed
and duly executed copy of this Notice of Guaranteed Delivery (or facsimile
hereof or an agent's message and Notice of Guaranteed Delivery in lieu hereof)
and any other documents required by this Notice of Guaranteed Delivery with
respect to the Outstanding Notes must be received by the Exchange Agent at its
address set forth herein prior to the Expiration Date of the Exchange Offer.
THE METHOD OF DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY AND ANY OTHER
REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE ELECTION AND SOLE RISK OF THE
HOLDER, AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE
EXCHANGE AGENT.  If delivery is by mail, registered mail with return receipt
requested, properly insured, is recommended.  As an alternative to delivery by
mail, holders may wish to consider using an overnight or hand delivery service.
In all cases, sufficient time should be allowed to ensure timely delivery.  For
a description of the guaranteed delivery procedures, see Instruction 2 of the
Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES
DUE 2009, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR SECURED
NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009 WHO
WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS RELATING TO
SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE DOCUMENTATION
RELATING TO SUCH NOTES.

     2.   SIGNATURES ON THIS NOTICE OF GUARANTEED DELIVERY.  If this Notice of
Guaranteed Delivery (or facsimile hereof) is signed by the registered holder(s)
of the Outstanding Notes referred to herein, the signature(s) must correspond
exactly with the name(s) written on the face of the Outstanding Notes without
alteration, enlargement, or any change whatsoever.  If this Notice of Guaranteed
Delivery (or facsimile hereof) is signed by a participant of the DTC whose name
appears on a security position listing as the owner of the Outstanding Notes,
the signature must correspond with the name shown on the security position
listing as the owner of the Outstanding Notes.

     If this Notice of Guaranteed Delivery (or facsimile hereof) is signed by a
person other than the registered holder(s) of any Outstanding Notes listed or a
participant of the DTC, this Notice of Guaranteed Delivery must be accompanied
by appropriate bond powers, signed as the name(s) of the registered holder(s)
appear(s) on the Outstanding Notes or signed as the name(s) of the participant
shown on the DTC's security position listing.

     If this Notice of Guaranteed Delivery (or facsimile hereof) is signed by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation, or other person acting in a fiduciary or representative capacity,
such person should so indicate when signing and submit with the Letter of
Transmittal evidence satisfactory to the Exchange Agent of such person's
authority to so act.

     3.   REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Questions and requests
for assistance and requests for additional copies of the Prospectus and this
Notice of Guaranteed Delivery may be directed to the Exchange Agent at the
address set forth on the cover page hereof.  Holders may also contact their
broker, dealer, commercial bank, trust company or other nominee for assistance
concerning the Exchange Offer.

                                       5

<PAGE>

                                                                    EXHIBIT 99.9

                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                         NOTICE OF GUARANTEED DELIVERY

                                      FOR

                           TENDER OF ALL OUTSTANDING

                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009
                          IN EXCHANGE FOR REGISTERED
                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009

     This form, or one substantially equivalent hereto, must be used by a holder
to accept the Exchange Offer of Lyondell Chemical Company (the "Issuer"),
Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland, Ltd.
(together, the "Subsidiary Guarantors") and to tender outstanding unregistered
10 7/8% Senior Subordinated Notes Due 2009 (the "Outstanding Notes") to The Bank
of New York, as exchange agent (the "Exchange Agent") pursuant to the guaranteed
delivery procedures described in "The Exchange Offers--Guaranteed Delivery
Procedures" of the prospectus dated           , 1999 (the "Prospectus") and in
Instruction 2 to the related Letter of Transmittal. Any holder who wishes to
tender Outstanding Notes pursuant to such guaranteed delivery procedures must
ensure that the Exchange Agent receives this Notice of Guaranteed Delivery,
properly completed and duly executed, prior to the Expiration Date (as defined
below) of the Exchange Offer. Capitalized terms used but not defined herein have
the meanings ascribed to them in the Prospectus or the Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES,
SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES
B, DUE 2007, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR
SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE
2007 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS
RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
______________________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE").
OUTSTANDING NOTES TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME
PRIOR TO 5:00 P.M., NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE
OFFER.

                 The Exchange Agent for the Exchange Offer is:

                              THE BANK OF NEW YORK

By Courier:                  By Mail (registered or             By Hand:
                          certified mail recommended):
   THE BANK OF NEW YORK        THE BANK OF NEW YORK            101 BARCLAY ST.
      101 BARCLAY ST.       101 BARCLAY ST., FLOOR 7E   CORPORATE TRUST SERVICES
 CORPORATE TRUST SERVICES      NEW YORK, NY  10286                 WINDOW
         WINDOW                ATTN:  REORG. DEPT.              GROUND LEVEL
       GROUND LEVEL                                          NEW YORK, NY  10286
    NEW YORK, NY  10286                                      ATTN:  REORG. DEPT.
     ATTN:  REORG. DEPT.
<PAGE>

            By Facsimile Transmission (eligible institutions only):

                                 (212) 815-4699

                       Attn:
                            ------------------------

                             Confirm by Telephone:
                                 (212) 815-2742



     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE, OR
TRANSMISSION VIA FACSIMILE TO A NUMBER OTHER THAN AS SET FORTH ABOVE, WILL NOT
CONSTITUTE A VALID DELIVERY.  THE INSTRUCTIONS ACCOMPANYING THIS NOTICE OF
GUARANTEED DELIVERY SHOULD BE READ CAREFULLY BEFORE THE NOTICE OF GUARANTEED
DELIVERY IS COMPLETED.

     THIS NOTICE OF GUARANTEED DELIVERY IS NOT TO BE USED TO GUARANTEE
SIGNATURES.  IF A SIGNATURE ON A LETTER OF TRANSMITTAL IS REQUIRED TO BE
GUARANTEED BY AN "ELIGIBLE INSTITUTION" UNDER THE INSTRUCTIONS THERETO, SUCH
SIGNATURE GUARANTEE MUST APPEAR IN THE APPLICABLE SPACE IN THE BOX PROVIDED ON
THE LETTER OF TRANSMITTAL FOR GUARANTEE OF SIGNATURES.

Ladies and Gentlemen:

     The undersigned hereby tenders to the Issuer, in accordance with the
Issuer's offer, upon the terms and subject to the conditions set forth in the
Prospectus and the related Letter of Transmittal, receipt of which is hereby
acknowledged, the principal amount of Outstanding Notes set forth below pursuant
to the guaranteed delivery procedures set forth in the Prospectus under the
caption "The Exchange Offers--Guaranteed Delivery Procedures" and in Instruction
2 of the Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES,
SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES,
SERIES B, DUE 2007, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES
B, DUE 2007 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS
RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

                                       2
<PAGE>

     The undersigned hereby tenders the Outstanding Notes listed below:

<TABLE>
<CAPTION>

 Title of Series                  Certificate Number(s) (if known)       Aggregate Principal      Aggregate Principal
                                  of Outstanding Notes or Account        Amount Represented         Amount Tendered
                                  Number at the Book-entry Facility
<S>                               <C>                                   <C>                       <C>
Lyondell Chemical Company
 10 7/8% Senior Subordinated
 Due 2009
</TABLE>

                           PLEASE SIGN AND COMPLETE


- -------------------------------------   ----------------------------------------

- -------------------------------------   ----------------------------------------
Name(s) of Registered Holder(s)         Signatures of Registered Holder(s) or
                                        Authorized Signatory

- -------------------------------------

- -------------------------------------
Address
                                        Dated                            , 1999
- -------------------------------------        ----------------------------
Area Code and Telephone Number(s)

          THIS NOTICE OF GUARANTEED DELIVERY MUST BE SIGNED BY THE REGISTERED
HOLDER(S) OF OUTSTANDING NOTES EXACTLY AS THE NAME(S) OF SUCH PERSON(S)
APPEAR(S) ON CERTIFICATES FOR OUTSTANDING NOTES OR ON A SECURITY POSITION
LISTING AS THE OWNER OF OUTSTANDING NOTES, OR BY PERSON(S) AUTHORIZED TO BECOME
HOLDER(S) BY ENDORSEMENTS AND DOCUMENTS TRANSMITTED WITH THIS NOTICE OF
GUARANTEED DELIVERY.  IF SIGNATURE IS BY A TRUSTEE, EXECUTOR, ADMINISTRATOR,
GUARDIAN, ATTORNEY-IN-FACT, OFFICER OR OTHER PERSON ACTING IN A FIDUCIARY OR
REPRESENTATIVE CAPACITY, SUCH PERSON MUST PROVIDE THE FOLLOWING INFORMATION:

                                       3
<PAGE>

                      Please print name(s) and address(es)

Name(s):

- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------

Capacity:

- -------------------------------------------------------------------------------

Address(es):

- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------

                                   GUARANTEE

                    (Not to be used for signature guarantee)

          The undersigned, a firm which is a member firm of a registered
national securities exchange or of the National Association of Securities
Dealers, Inc., or is a commercial bank or trust company having an office or
correspondent in the United States, or is otherwise an "eligible guarantor
institution" within the meaning of Rule 17Ad-15 under the Securities Exchange
Act of 1934, hereby guarantees deposit with the Exchange Agent of the Letter of
Transmittal (or facsimile thereof or agent's message in lieu thereof), together
with the Outstanding Notes tendered hereby in proper form for transfer (or
confirmation of the book-entry transfer of such Outstanding Notes into the
Exchange Agent's account at the DTC described in the Prospectus under the
caption "The Exchange Offers--Book-entry Transfer" and in the Letter of
Transmittal) and any other required documents, all by 5:00 p.m., New York City
time, within five New York Stock Exchange trading days following the Expiration
Date for such series.


Name of Firm:
             ---------------------------   --------------------------------
                                           (Authorized Signature)

Address:                                   Name:
        --------------------------------        ---------------------------
              (Include Zip Code)           Title:
                                                 --------------------------
                                                   (Please Type or Print)
Area Code and Telephone Number:

- ----------------------------------------   Date:                     , 1999
                                                ---------------------

     DO NOT SEND OUTSTANDING NOTES WITH THIS FORM.  ACTUAL SURRENDER OF
OUTSTANDING NOTES MUST BE MADE PURSUANT TO, AND BE ACCOMPANIED BY, A PROPERLY
COMPLETED AND DULY EXECUTED LETTER OF TRANSMITTAL AND ANY OTHER REQUIRED
DOCUMENTS.

                                       4
<PAGE>

                 INSTRUCTIONS FOR NOTICE OF GUARANTEED DELIVERY

     1.   DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY.  A properly completed
and duly executed copy of this Notice of Guaranteed Delivery (or facsimile
hereof or an agent's message and Notice of Guaranteed Delivery in lieu hereof)
and any other documents required by this Notice of Guaranteed Delivery with
respect to the Outstanding Notes must be received by the Exchange Agent at its
address set forth herein prior to the Expiration Date of the Exchange Offer.
THE METHOD OF DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY AND ANY OTHER
REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE ELECTION AND SOLE RISK OF THE
HOLDER, AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE
EXCHANGE AGENT.  If delivery is by mail, registered mail with return receipt
requested, properly insured, is recommended.  As an alternative to delivery by
mail, holders may wish to consider using an overnight or hand delivery service.
In all cases, sufficient time should be allowed to ensure timely delivery.  For
a description of the guaranteed delivery procedures, see Instruction 2 of the
Letter of Transmittal.

     THIS NOTICE OF GUARANTEED DELIVERY PERTAINS ONLY TO THE ISSUER'S OFFER TO
EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009.  THE ISSUER IS
CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS UNREGISTERED
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES,
SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS REGISTERED 9 5/8%
SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES
B, DUE 2007, RESPECTIVELY. HOLDERS ALSO HOLDING THE ISSUER'S 9 5/8% SENIOR
SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE
2007 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE OFFERS
RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     2.   SIGNATURES ON THIS NOTICE OF GUARANTEED DELIVERY.  If this Notice of
Guaranteed Delivery (or facsimile hereof) is signed by the registered holder(s)
of the Outstanding Notes referred to herein, the signature(s) must correspond
exactly with the name(s) written on the face of the Outstanding Notes without
alteration, enlargement, or any change whatsoever.  If this Notice of Guaranteed
Delivery (or facsimile hereof) is signed by a participant of the DTC whose name
appears on a security position listing as the owner of the Outstanding Notes,
the signature must correspond with the name shown on the security position
listing as the owner of the Outstanding Notes.

     If this Notice of Guaranteed Delivery (or facsimile hereof) is signed by a
person other than the registered holder(s) of any Outstanding Notes listed or a
participant of the DTC, this Notice of Guaranteed Delivery must be accompanied
by appropriate bond powers, signed as the name(s) of the registered holder(s)
appear(s) on the Outstanding Notes or signed as the name(s) of the participant
shown on the DTC's security position listing.

     If this Notice of Guaranteed Delivery (or facsimile hereof) is signed by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation, or other person acting in a fiduciary or representative capacity,
such person should so indicate when signing and submit with the Letter of
Transmittal evidence satisfactory to the Exchange Agent of such person's
authority to so act.

     3.   REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Questions and requests
for assistance and requests for additional copies of the Prospectus and this
Notice of Guaranteed Delivery may be directed to the Exchange Agent at the
address set forth on the cover page hereof.  Holders may also contact their
broker, dealer, commercial bank, trust company or other nominee for assistance
concerning the Exchange Offer.

                                       5

<PAGE>

                                                                   EXHIBIT 99.10
                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                             LETTER OF TRANSMITTAL

                                      FOR

                           TENDER OF ALL OUTSTANDING

                         9 5/8% SENIOR SECURED NOTES,
                             SERIES A, DUE 2007 IN
                            EXCHANGE FOR REGISTERED
                         9 5/8% SENIOR SECURED NOTES,
                              SERIES A, DUE 2007

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M.,
NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.

                PLEASE READ CAREFULLY THE ATTACHED INSTRUCTIONS

If you desire to accept the Exchange Offer, this Letter of Transmittal should be
completed, signed and submitted to the Exchange Agent:

                              THE BANK OF NEW YORK

                            By Mail (registered or
By Courier:               certified mail recommended):          By Hand:

 The Bank of New York          The Bank of New York          101 Barclay St.
   101 Barclay St.          101 Barclay St., Floor 7E   Corporate Trust Services
Corporate Trust Services       New York, NY  10286                Window
        Window                 Attn:  Reorg. Dept.             Ground Level
     Ground Level                                          New York, NY  10286
 New York, NY  10286                                       Attn:  Reorg. Dept.
 Attn:  Reorg. Dept.

            BY FACSIMILE TRANSMISSION (ELIGIBLE INSTITUTIONS ONLY):

                                  212-815-4699

                         Attn:
                              ----------------------

                             Confirm by telephone:

                                 (212) 815-2742

     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SHOWN ABOVE OR
TRANSMISSION VIA A FACSIMILE NUMBER OTHER THAN THE ONE LISTED ABOVE WILL NOT
CONSTITUTE A VALID DELIVERY.  THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF
TRANSMITTAL SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS
COMPLETED.  FOR ANY QUESTIONS REGARDING THIS LETTER OF TRANSMITTAL OR FOR ANY
ADDITIONAL INFORMATION, YOU MAY CONTACT THE EXCHANGE AGENT BY TELEPHONE AT (212)
815-2742.
<PAGE>

     The undersigned hereby acknowledges receipt and review of the prospectus
dated  _________  , 1999 (the "Prospectus") of Lyondell Chemical Company (the
"Issuer"), Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland,
Ltd. (each a "Subsidiary Guarantor") and this Letter of Transmittal which
together constitute the Issuer's offer to exchange (the "Exchange Offer") 9 5/8%
Senior Secured Notes, Series A, Due 2007 (the "New Notes"), the issuance of
which has been registered under the Securities Act of 1933, as amended (the
"Securities Act"), for a like principal amount of issued and outstanding
unregistered 9 5/8% Senior Secured Notes, Series A, Due 2007 (the "Outstanding
Notes").  Capitalized terms used but not defined herein have the respective
meanings given to them in the Prospectus.

     THIS LETTER OF TRANSMITTAL AND RELATED DOCUMENTS PERTAIN ONLY TO THE
ISSUER'S OFFER TO EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007.
THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY.  HOLDERS ALSO HOLDING THE ISSUER'S
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     The Issuer reserves the right, at any time or from time to time, to extend
the period of time during which the Exchange Offer for the Outstanding Notes is
open, at its discretion, in which event the term "Expiration Date" shall mean
the latest date to which such Exchange Offer is extended.  The Issuer reserves
the right to extend such period independently of any other Exchange Offer.   The
Issuer shall notify The Bank of New York (the "Exchange Agent") of any extension
by oral or written notice and shall make a public announcement thereof no later
than 9:00 a.m., New York City time, on the next business day after the
previously scheduled Expiration Date.

     Registered Holders of Exchange Notes on the relevant record date for the
first interest payment date following the consummation of an Exchange Offer will
receive interest accruing from the most recent date to which interest has been
paid on the Outstanding Notes or, if no interest has been paid, from May 17,
1999.  Outstanding Notes accepted for exchange will cease to accrue interest
from and after the date of consummation of an Exchange Offer.  Holders whose
Outstanding Notes are accepted for exchange will not receive any payment in
respect of accrued interest on such Outstanding Notes otherwise payable on any
interest payment date the record date for which occurs on or after consummation
of an Exchange Offer.

     This Letter of Transmittal is to be used by a holder of Outstanding Notes
if

     .    certificates of Outstanding Notes are to be forwarded herewith; or

     .    delivery of Outstanding Notes is to be made by book-entry transfer to
          the account maintained by the Exchange Agent at The Depository Trust
          Company (the "DTC") pursuant to the procedures set forth in the
          Prospectus under the caption "The Exchange Offers--Book-entry
          Transfer" and an "agent's message" is not delivered as described in
          the Prospectus under the caption "The Exchange Offers--Procedures for
          Tendering--Tendering Through DTC's Automated Tender Offer Program."

     Tenders by book-entry transfer may also be made by delivering an agent's
message in lieu of this Letter of Transmittal.  Holders of Outstanding Notes
whose Outstanding Notes are not immediately available, or who are unable to
deliver their Outstanding Notes, this Letter of Transmittal and all other
documents required hereby to the Exchange Agent on or prior to the Expiration
Date for the Exchange Offer, or who are unable to complete the procedure for
book-entry transfer on a timely basis, must tender their Outstanding Notes
according to the guaranteed delivery procedures set forth in the prospectus
under the caption "The Exchange Offers--Guaranteed Delivery Procedures."  See
Instruction 2 of this Letter of Transmittal.  DELIVERY OF DOCUMENTS TO THE BOOK-
ENTRY TRANSFER FACILITY DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

                                       2
<PAGE>

     The term "holder" with respect to an Exchange Offer for Outstanding Notes
means any person in whose name such Outstanding Notes are registered on the
books of Lyondell Chemical Company, any person who holds such Outstanding Notes
and has obtained a properly completed bond power from the registered holder or
any participant in the DTC system whose name appears on a security position
listing as the holder of such Outstanding Notes and who desires to deliver the
Outstanding Notes by book-entry transfer at DTC.  The undersigned has completed,
executed and delivered this Letter of Transmittal to indicate the action the
undersigned desires to take with respect to such Exchange Offer.  Holders who
wish to tender their Outstanding Notes must complete this Letter of Transmittal
in its entirety (unless such Outstanding Notes are to be tendered by book-entry
transfer and an agent's message is delivered in lieu hereof).

     PLEASE READ THE ENTIRE LETTER OF TRANSMITTAL AND THE PROSPECTUS CAREFULLY
BEFORE CHECKING ANY BOX BELOW.  THE INSTRUCTIONS INCLUDED WITH THIS LETTER OF
TRANSMITTAL MUST BE FOLLOWED.  QUESTIONS AND REQUESTS FOR ASSISTANCE OR FOR
ADDITIONAL COPIES OF THE PROSPECTUS AND THIS LETTER OF TRANSMITTAL MAY BE
DIRECTED TO THE EXCHANGE AGENT.

     List below the Outstanding Notes to which this Letter of Transmittal
relates.  If the space below is inadequate, list the title, registered numbers
and principal amounts on a separate signed schedule and affix the list to this
Letter of Transmittal.

<TABLE>
<CAPTION>

                             DESCRIPTION OF OUTSTANDING NOTES TENDERED

    Name(s) and Address(es) of                            Outstanding Note(s) Tendered
 Registered Holder(s) Exactly as    --------------------------------------------------------------------------
              Name(s)                   Title of       Registered       Aggregate Principal      Principal
  Appear(s) on Outstanding Notes         Series        Number(s)*              Amount              Amount
    (Please Fill In, If Blank)                                              Represented          Tendered**
                                                                             by Note(s)
- -------------------------------------------------------------------------------------------------------------
<S>                                    <C>             <C>             <C>                      <C>

                                      Lyondell
                                      Chemical
                                      Company
                                      9 5/8% Senior
                                      Secured
                                      Notes,
                                      Series A,
                                      Due 2007
- -------------------------------------------------------------------------------------------------------------

- -------------------------------------------------------------------------------------------------------------

- -------------------------------------------------------------------------------------------------------------
                                      Total
- -------------------------------------------------------------------------------------------------------------
</TABLE>

*    Need not be completed by book-entry holders.
**   Unless otherwise indicated, any tendering holder of Outstanding Notes will
     be deemed to have tendered the entire aggregate principal amount
     represented by such Outstanding Notes. All tenders must be in integral
     multiples of $1,000.

[ ]  CHECK HERE IF TENDERED OUTSTANDING NOTES ARE ENCLOSED HEREWITH.

                                       3
<PAGE>

[ ] CHECK HERE AND COMPLETE THE FOLLOWING IF TENDERED OUTSTANDING NOTES ARE
    BEING DELIVERED BY BOOK-ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE
    EXCHANGE AGENT WITH THE DTC (FOR USE BY ELIGIBLE INSTITUTIONS ONLY):

Name of Tendering
Institution:
            ---------------------------------------------------------------

Book-entry Facility Account
Number(s):
          -----------------------------------------------------------------

Transaction Code
Number(s):
          -----------------------------------------------------------------

[ ]  CHECK HERE AND COMPLETE THE FOLLOWING IF TENDERED OUTSTANDING NOTES ARE
     BEING DELIVERED PURSUANT TO A NOTICE OF GUARANTEED DELIVERY EITHER ENCLOSED
     HEREWITH OR PREVIOUSLY DELIVERED TO THE EXCHANGE AGENT (COPY ATTACHED) (FOR
     USE BY ELIGIBLE INSTITUTIONS ONLY):

Name(s) of Registered Holder(s)
of Outstanding Notes:
                     -----------------------------------------------------

Date of Execution of Notice of
Guaranteed Delivery:
                    ------------------------------------------------------

Window Ticket Number
(if available):
               -----------------------------------------------------------

Name of Eligible Institution that
Guaranteed Delivery:
                    ------------------------------------------------------

DTC Account Number(s) (if delivered
by book-entry transfer):
                        --------------------------------------------------

Transaction Code Number (if delivered
by book-entry transfer):
                        --------------------------------------------------

Name of Tendering Institution (if
delivered by book-entry transfer):
                                  ----------------------------------------

[ ]  CHECK HERE IF TENDERED OUTSTANDING NOTES ARE BEING DELIVERED BY BOOK-ENTRY
     TRANSFER AND NON-EXCHANGED OUTSTANDING NOTES ARE TO BE RETURNED BY
     CREDITING THE DTC ACCOUNT NUMBER SET FORTH ABOVE (FOR USE BY ELIGIBLE
     INSTITUTIONS ONLY).

[ ]  CHECK HERE AND COMPLETE THE FOLLOWING IF YOU ARE A BROKER-DEALER AND WISH
     TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY
     AMENDMENTS OR SUPPLEMENTS THERETO:

                                       4
<PAGE>

Name:
     ------------------------------------------------------------------
Address:
        ---------------------------------------------------------------

     If the undersigned is not a broker-dealer, the undersigned represents that
it is not engaged in, and does not intend to participate in, a distribution of
New Notes.  If the undersigned is a broker-dealer that will receive New Notes
for its own account in exchange for Outstanding Notes, it represents that the
New Notes are acquired as a result of market-making activities or other trading
activities and it acknowledges that it will deliver a Prospectus in connection
with any resale of such New Notes; however, by so acknowledging and by
delivering a Prospectus, the undersigned will not be deemed to admit that it is
an "underwriter" within the meaning of the Securities Act.


                                       5
<PAGE>

                       SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY.

Ladies and Gentlemen:

     Subject to the terms and conditions of the applicable Exchange Offer, the
undersigned hereby tenders to the Issuer for exchange the principal amount of
Outstanding Notes indicated above.  Subject to and effective upon the
acceptance for exchange of the principal amount of Outstanding Notes tendered in
accordance with this Letter of Transmittal, the undersigned hereby exchanges,
assigns and transfers to, or upon the order of, the Issuer all right, title and
interest in and to the Outstanding Notes tendered for exchange hereby, including
all rights to accrued and unpaid interest thereon as of the Expiration Date.
The undersigned hereby irrevocably constitutes and appoints the Exchange Agent
the true and lawful agent and attorney-in-fact for the undersigned (with full
knowledge that said Exchange Agent also acts as the agent for the Issuer in
connection with the Exchange Offer) with respect to the tendered Outstanding
Notes with full power of substitution to

     .    deliver such Outstanding Notes, or transfer ownership of such
          Outstanding Notes on the account books maintained by the DTC, to the
          Issuer and deliver all accompanying evidences of transfer and
          authenticity; and

     .    present such Outstanding Notes for transfer on the books of the Issuer
          and receive all benefits and otherwise exercise all rights of
          beneficial ownership of such Outstanding Notes, all in accordance with
          the terms of the Exchange Offer.

The power of attorney granted in this paragraph shall be deemed to be
irrevocable and coupled with an interest.

     The undersigned hereby represents and warrants that the undersigned has
full power and authority to tender, exchange, assign and transfer the
Outstanding Notes tendered hereby and to acquire the New Notes issuable upon the
exchange of such tendered Outstanding Notes, and that the Issuer will acquire
good and unencumbered title thereto, free and clear of all liens, restrictions,
charges and encumbrances and not subject to any adverse claim, when the same are
accepted for exchange by the Issuer as contemplated herein.

     The undersigned acknowledges that the Exchange Offer is being made in
reliance upon interpretations set forth in no-action letters issued to third
parties by the staff of the Securities and Exchange Commission (the "SEC"),
including Exxon Capital Holdings Corporation (available April 13, 1988), Morgan
Stanley & Co. Incorporated (available June 5, 1991), Shearman & Sterling
(available July 2, 1993) and similar no-action letters (the "Prior No-Action
Letters"), that the New Notes issued in exchange for Outstanding Notes pursuant
to the Exchange Offer may be offered for resale or resold and otherwise
transferred by holders thereof (other than any such holder that is an
"affiliate" of the Issuer or any Subsidiary Guarantor within the meaning of Rule
405 under the Securities Act), without compliance with the registration and
prospectus delivery provisions of the Securities Act, provided that such New
Notes are acquired in the ordinary course of such holders' business and that
such holders are not engaging in, do not intend to participate in and have no
arrangement or understanding with any person to participate in a distribution of
such New Notes.  The SEC has not, however, considered an Exchange Offer in the
context of a no-action letter and there can be no assurance that the staff of
the SEC would make a similar determination with respect to an Exchange Offer as
in other circumstances.

     The undersigned hereby further represents to the Issuer that

     .    the New Notes to be received are being acquired in the ordinary course
          of business of the person receiving such New Notes, whether or not the
          undersigned;

     .    neither the undersigned nor any such other person has an arrangement
          or understanding with any person to participate in the distribution of
          the Outstanding Notes or the New Notes within the meaning of the
          Securities Act;

                                       6
<PAGE>

     .    neither the holder nor any such other person is an "affiliate," as
          defined in Rule 405 under the Securities Act, of the Issuer or a
          broker-dealer tendering Outstanding Notes acquired directly from the
          Issuer for its own account; and

     .    if the undersigned is not a broker-dealer or is a broker-dealer but
          will not receive New Notes for its own account in exchange for
          Outstanding Notes, the undersigned represents that it is not engaged
          in, and does not intend to participate in, a distribution of New
          Notes.

     If the undersigned is a broker-dealer that will receive New Notes for its
own account in exchange for Outstanding Notes, it represents that the New Notes
are being acquired by it as a result of market-making activities or other
trading activities and it acknowledges that it will deliver a Prospectus in
connection with any resale of such New Notes.  By so acknowledging and by
delivering a Prospectus, however, the undersigned will not be deemed to admit
that it is an "underwriter" within the meaning of the Securities Act.

     The undersigned acknowledges that if the undersigned is tendering
Outstanding Notes in the Exchange Offer with the intention of participating in
any manner in a distribution of the New Notes

     .    the undersigned cannot rely on the position of the staff of the SEC
          set forth in the Prior No-Action Letters and, in the absence of an
          exemption therefrom, must comply with the registration and prospectus
          delivery requirements of the Securities Act in connection with the
          resale transaction of the New Notes, in which case the registration
          statement must contain the selling security holder information
          required by Item 507 or Item 508, as applicable, of Regulation S-K of
          the SEC; and

     .    failure to comply with such requirements in such instance could result
          in the undersigned incurring liability for which the undersigned is
          not indemnified by the Issuer.

     The undersigned will, upon request, execute and deliver any additional
documents deemed by the Exchange Agent or the Issuer to be necessary or
desirable to complete the exchange, assignment and transfer of the Outstanding
Notes tendered hereby, including the transfer of such Outstanding Notes on the
account books maintained by the DTC.

     For purposes of the Exchange Offer, the Issuer shall be deemed to have
accepted for exchange validly tendered Outstanding Notes when, as and if the
Issuer gives oral or written notice thereof to the Exchange Agent.  Any tendered
Outstanding Notes that are not accepted for exchange pursuant to the Exchange
Offer for any reason will be returned, without expense, to the undersigned at
the address shown below or at a different address as may be indicated herein
under "Special Delivery Instructions" as promptly as practicable after the
Expiration Date for such Exchange Offer.

     All authority conferred or agreed to be conferred by this Letter of
Transmittal shall survive the death, incapacity or dissolution of the
undersigned, and every obligation of the undersigned under this Letter of
Transmittal shall be binding upon the successors, assigns, heirs, executors,
administrators, trustees in bankruptcy and legal representatives. This tender
may be withdrawn only in accordance with the procedures set forth in the section
of the Prospectus entitled "The Exchange Offers--Withdrawal of Tenders."

     The undersigned acknowledges that the Issuer's acceptance of properly
tendered Outstanding Notes pursuant to the procedures described under the
caption "The Exchange Offers--Procedures for Tendering" in the Prospectus and in
the instructions hereto will constitute a binding agreement between the
undersigned and the Issuer upon the terms and subject to the conditions of the
Exchange Offer.  The undersigned further agrees that acceptance of any tendered
Outstanding Notes by the Issuer and the issuance of New Notes in exchange
therefor shall constitute performance in full by the Issuer of their obligations
under the registration rights agreement and that the Issuer shall have no
further obligations or liabilities thereunder for the registration of the
Outstanding Notes or the New Notes.

     The Exchange Offer is subject to certain conditions set forth in the
Prospectus under the caption "The Exchange Offers-- Conditions to the Exchange
Offers."  The undersigned recognizes that as a result of these conditions (which
may be waived, in whole or in part, by the Issuer), the Issuer may not be
required to exchange any of the Outstanding

                                       7
<PAGE>

Notes tendered hereby. In such event, the Outstanding Notes not exchanged will
be returned to the undersigned at the address shown below the signature of the
undersigned.

     Unless otherwise indicated under "Special Issuance Instructions," please
issue the New Notes issued in exchange for the Outstanding Notes accepted for
exchange and return any Outstanding Notes not tendered or not exchanged, in the
name(s) of the undersigned (or, in the case of a book-entry delivery of
Outstanding Notes, please credit the account indicated above maintained at the
DTC).  Similarly, unless otherwise indicated under "Special Delivery
Instructions," please mail or deliver the New Notes issued in exchange for the
Outstanding Notes accepted for exchange and any Outstanding Notes not tendered
or not exchanged (and accompanying documents, as appropriate) to the undersigned
at the address shown below the undersigned's signature(s).  In the event that
both "Special Issuance Instructions" and "Special Delivery Instructions" are
completed, please issue the New Notes issued in exchange for the Outstanding
Notes accepted for exchange in the name(s) of, and return any Outstanding Notes
not tendered or not exchanged to, the person(s) so indicated.  The undersigned
recognizes that the Issuer has no obligation pursuant to the "Special Issuance
Instructions" and "Special Delivery Instructions" to transfer any Outstanding
Notes from the name of the registered holder(s) thereof if the Issuer does not
accept for exchange any of the Outstanding Notes so tendered for exchange.

<TABLE>
<S>                                                         <C>
         SPECIAL ISSUANCE INSTRUCTIONS                                  SPECIAL DELIVERY INSTRUCTIONS
           (SEE INSTRUCTIONS 5 AND 6)                                     (SEE INSTRUCTIONS 5 AND 6)

To be completed ONLY (i) if Outstanding Notes in a          To be completed ONLY if Outstanding Notes in a
principal amount not tendered, or New Notes issued in       principal amount not tendered, or New Notes issued, in
exchange for Outstanding Notes accepted for                 exchange for Outstanding Notes accepted for exchange,
exchange, are to be issued in the name of someone           are to be mailed or delivered to someone other than the
other than the undersigned, or (ii) if Outstanding          undersigned, or to the undersigned at an address other
Notes tendered by book-entry transfer which are not         than that shown below the undersigned's signature.
exchanged are to be returned by credit to an account        Mail or deliver New Notes and/or Old Notes to:
maintained at the DTC other than the DTC Account
Number set forth above.  Issue New Notes and/or
Outstanding Notes to:

Name:                                                       Name:
     ---------------------------------------------------         --------------------------------------------------
Address:                                                    Address:
        ------------------------------------------------            -----------------------------------------------
                       (Include Zip Code)                                          (Include Zip Code)

- ---------------------------------------------------------   --------------------------------------------------------
      (Tax Identification or Social Security Number)              (Tax Identification or Social Security Number)

                  (Please Type or Print)                                        (Please Type or Print)
  </TABLE>

[ ] Credit unexchanged Outstanding Notes delivered by book-entry transfer to
    the DTC account number set forth below:

DTC Account Number:
                   --------------------------------------------------------

                                       8
<PAGE>

                                   IMPORTANT
                        PLEASE SIGN HERE WHETHER OR NOT
             OUTSTANDING NOTES ARE BEING PHYSICALLY TENDERED HEREBY
               (Complete Accompanying Substitute Form W-9 Below)

X
 -----------------------------------------------------------------------------
X
 -----------------------------------------------------------------------------
          (Signature(s) of Registered Holder(s) of Outstanding Notes)

Dated ___________, 1999

(The above lines must be signed by the registered holder(s) of Outstanding Notes
as your name(s) appear(s) on the Outstanding Notes or on a security position
listing, or by person(s) authorized to become registered holder(s) by a properly
completed bond power from the registered holder(s), a copy of which must be
transmitted with this Letter of Transmittal.  If Outstanding Notes to which this
Letter of Transmittal relate are held of record by two or more joint holders,
then all such holders must sign this Letter of Transmittal.  If signature is by
a trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary or representative capacity,
then such person must (i) set forth his or her full title below and (ii) unless
waived by the Issuer, submit evidence satisfactory to the Issuer of such
person's authority so to act.  See Instruction 5 regarding the completion of
this Letter of Transmittal, printed below.)

Name(s):
        ----------------------------------------------------------------------
                                   (Please Type or Print)

Capacity (Full Title):
                      --------------------------------------------------------

Address:
        ----------------------------------------------------------------------
                                  (Include Zip Code)

Area Code and Telephone Number:
                               -----------------------------------------------

Taxpayer Identification or Social Security Number:
                                                  ----------------------------

                                       9
<PAGE>

                         MEDALLION SIGNATURE GUARANTEE
                         (IF REQUIRED BY INSTRUCTION 5)

Certain signatures must be guaranteed by an Eligible Institution.

Signature(s) Guaranteed by an
Eligible Institution:
                     -----------------------------------------------------------
                                     (Authorized Signature)

- --------------------------------------------------------------------------------
                                    (Title)

- --------------------------------------------------------------------------------
                                 (Name of Firm)

- --------------------------------------------------------------------------------
                         (Address, Including Zip Code)

- --------------------------------------------------------------------------------
                        (Area Code and Telephone Number)

Dated:                  , 1999
      ------------------

                                      10
<PAGE>

                     INSTRUCTIONS TO LETTER OF TRANSMITTAL
         FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

          DELIVERY OF THIS LETTER OF TRANSMITTAL AND OUTSTANDING NOTES OR
AGENT'S MESSAGE AND BOOK-ENTRY CONFIRMATIONS.   All physically delivered
Outstanding Notes or any confirmation of a book-entry transfer to the Exchange
Agent's account at the DTC of Outstanding Notes tendered by book-entry transfer
(a "Book-entry Confirmation"), as well as a properly completed and duly executed
copy of this Letter of Transmittal or facsimile hereof (or an agent's message in
lieu hereof), and any other documents required by this Letter of Transmittal
must be received by the Exchange Agent at its address set forth herein on or
prior to 5:00 p.m., New York City time, on the Expiration Date for the Exchange
Offer, or the tendering holder must comply with the guaranteed delivery
procedures set forth below.  Outstanding Notes tendered hereby must be in
denominations of principal amount of $1,000 and any integral multiple thereof.
THE METHOD OF DELIVERY OF THE TENDERED OUTSTANDING NOTES, THIS LETTER OF
TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE
ELECTION AND RISK OF THE HOLDER AND, EXCEPT AS OTHERWISE PROVIDED BELOW, THE
DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED OR CONFIRMED BY THE
EXCHANGE AGENT.  INSTEAD OF DELIVERY BY MAIL, IT IS RECOMMENDED THAT THE HOLDER
USE AN OVERNIGHT OR HAND DELIVERY SERVICE.  IN ALL CASES, SUFFICIENT TIME SHOULD
BE ALLOWED TO ENSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE EXPIRATION DATE.
NO LETTER OF TRANSMITTAL OR OUTSTANDING NOTES SHOULD BE SENT TO THE ISSUER.

     THIS LETTER OF TRANSMITTAL AND RELATED DOCUMENTS PERTAIN ONLY TO THE
ISSUER'S OFFER TO EXCHANGE ITS 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007.
THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY.  HOLDERS ALSO HOLDING THE ISSUER'S
9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     All questions as to the validity, form, eligibility (including time of
receipt) or acceptance of tendered Outstanding Notes and withdrawal of tendered
Outstanding Notes will be determined by the Issuer in its sole discretion, which
determination will be final and binding.  The Issuer reserves the absolute right
to reject any and all Outstanding Notes not properly tendered or any Outstanding
Notes the Issuer's acceptance of which would, in the opinion of counsel for the
Issuer, be unlawful.  The Issuer also reserves the right to waive any defects,
irregularities or conditions of tender as to particular Outstanding Notes.  The
Issuer's interpretation of the terms and conditions of an Exchange Offer
(including the instructions in this Letter of Transmittal) shall be final and
binding on all parties.  Unless waived, any defects or irregularities in
connection with tenders of Outstanding Notes must be cured within such time as
the Issuer shall determine.  Neither the Issuer, the Exchange Agent nor any
other person shall be under any duty to give notification of defects or
irregularities with respect to tenders of Outstanding Notes, nor shall any of
them incur any liability for failure to give such notification.  Tenders of
Outstanding Notes will not be deemed to have been made until such defects or
irregularities have been cured or waived.  Any Outstanding Notes received by the
Exchange Agent that are not properly tendered and as to which the defects or
irregularities have not been cured or waived will be returned by the Exchange
Agent to the tendering holders of Outstanding Notes, unless otherwise provided
in this Letter of Transmittal, as soon as practicable following the Expiration
Date.  See "The Exchange Offers" section of the Prospectus.

          2. GUARANTEED DELIVERY PROCEDURES.  Holders who wish to tender their
Outstanding Notes and (a) whose Outstanding Notes are not immediately available,
or (b) who cannot deliver their Outstanding Notes, this Letter of Transmittal or
any other documents required hereby to the Exchange Agent prior to the
applicable Expiration Date or (c) who are unable to comply with the applicable
procedures under the DTC's Automated Tender Offer Program on a timely basis,
must tender their Outstanding Notes according to the guaranteed delivery
procedures set forth in the Prospectus.

                                      11
<PAGE>

     Pursuant to such procedures:

     .    such tender must be made by or through a financial institution
          (including most banks, savings and loan associations and brokerage
          houses) that is a participant in the Securities Transfer Agents
          Medallion Program, the New York Stock Exchange Medallion Program or
          the Stock Exchanges Medallion Program approved by the Securities
          Transfer Association Inc. (an "Eligible Institution");

     .    prior to the applicable Expiration Date, the Exchange Agent must have
          received from the Eligible Institution a properly completed and duly
          executed Notice of Guaranteed Delivery (by facsimile transmission,
          mail or hand delivery) or a properly transmitted agent's message and
          Notice of Guaranteed Delivery setting forth the name and address of
          the holder of the Outstanding Notes, the registration number(s) of
          such Outstanding Notes and the total principal amount of Outstanding
          Notes tendered, stating that the tender is being made thereby and
          guaranteeing that, within five New York Stock Exchange trading days
          after such Expiration Date, this Letter of Transmittal (or facsimile
          hereof or an agent's message in lieu hereof) together with the
          Outstanding Notes in proper form for transfer (or a Book-entry
          Confirmation) and any other documents required by this Letter of
          Transmittal will be deposited by the Eligible Institution with the
          Exchange Agent; and

     .    this Letter of Transmittal (or a facsimile hereof or an agent's
          message in lieu hereof) together with the certificates for all
          physically tendered Outstanding Notes in proper form for transfer (or
          Book-entry Confirmation, as the case may be) and all other documents
          required hereby are received by the Exchange Agent within five New
          York Stock Exchange trading days after such Expiration Date.

     Any holder of Outstanding Notes who wishes to tender Outstanding Notes
pursuant to the guaranteed delivery procedures described above must ensure that
the Exchange Agent receives the Notice of Guaranteed Delivery prior to 5:00
p.m., New York City time, on the applicable Expiration Date.  Upon request of
the Exchange Agent, a Notice of Guaranteed Delivery will be sent to holders who
wish to tender their Outstanding Notes according to the guaranteed delivery
procedures set forth above.  See "The Exchange Offers--Guaranteed Delivery
Procedures" section of the prospectus.

     3. TENDER BY HOLDER. Only a registered holder of Outstanding Notes may
tender such Outstanding Notes in the Exchange Offer. Any beneficial holder of
Outstanding Notes who is not the registered holder and who wishes to tender
should arrange with the registered holder to execute and deliver this Letter of
Transmittal on his behalf or must, prior to completing and executing this Letter
of Transmittal and delivering his Outstanding Notes, either make appropriate
arrangements to register ownership of the Outstanding Notes in such holder's
name or obtain a properly completed bond power from the registered holder.

     4. PARTIAL TENDERS (NOT APPLICABLE TO HOLDERS WHO TENDER BY BOOK-ENTRY
TRANSFER).  Tenders of Outstanding Notes will be accepted only in integral
multiples of $1,000.  If less than the entire principal amount of any
Outstanding Notes is tendered, the tendering holder should fill in the principal
amount tendered in the third column of the box entitled "Description of
Outstanding Notes Tendered" above.  The entire principal amount of Outstanding
Notes delivered to the Exchange Agent will be deemed to have been tendered
unless otherwise indicated.  If the entire principal amount of all Outstanding
Notes is not tendered, then Outstanding Notes for the principal amount of
Outstanding Notes not tendered and New Notes issued in exchange for any
Outstanding Notes accepted will be returned to the holder as promptly as
practicable after the Outstanding Notes are accepted for exchange.

     5. SIGNATURES ON THIS LETTER OF TRANSMITTAL; BOND POWERS AND ENDORSEMENTS;
MEDALLION GUARANTEE OF SIGNATURES. If this Letter of Transmittal (or facsimile
hereof) is signed by the record holder(s) of the Outstanding Notes tendered
hereby, the signature(s) must correspond exactly with the name(s) as written on
the face of the Outstanding Notes without alteration, enlargement or any change
whatsoever. If this Letter of Transmittal (or facsimile hereof) is signed by a
participant in the DTC, the signature must correspond with the name as it
appears on the security position listing as the holder of the Outstanding Notes.

                                      12
<PAGE>

     If any tendered Outstanding Notes are owned of record by two or more joint
owners, all of such owners must sign this Letter of Transmittal.

     If this Letter of Transmittal (or facsimile hereof) is signed by the
registered holder(s) of Outstanding Notes listed and tendered hereby and the New
Notes issued in exchange therefor are to be issued (or any untendered principal
amount of Outstanding Notes is to be reissued) to the registered holder(s), then
said holder(s) need not and should not endorse any tendered Outstanding Notes,
nor provide a separate bond power.  In any other case, such holder(s) must
either properly endorse the Outstanding Notes tendered or transmit a properly
completed separate bond power with this Letter of Transmittal, with the
signatures on the endorsement or bond power guaranteed by an Eligible
Institution.

     If this Letter of Transmittal (or facsimile hereof) or any Outstanding
Notes or bond powers are signed by trustees, executors, administrators,
guardians, attorneys-in-fact, officers of corporations or others acting in a
fiduciary or representative capacity, such persons should so indicate when
signing, and, unless waived by the Issuer, evidence satisfactory to the Issuer
of their authority to act must be submitted with this Letter of Transmittal.

     NO SIGNATURE GUARANTEE IS REQUIRED IF (I) THIS LETTER OF TRANSMITTAL (OR
FACSIMILE HEREOF) IS SIGNED BY THE REGISTERED HOLDER(S) OF THE OUTSTANDING NOTES
TENDERED HEREIN (OR BY A PARTICIPANT IN THE DTC WHOSE NAME APPEARS ON A SECURITY
POSITION LISTING AS THE OWNER OF THE TENDERED OUTSTANDING NOTES) AND THE NEW
NOTES ARE TO BE ISSUED DIRECTLY TO SUCH REGISTERED HOLDER(S) (OR, IF SIGNED BY A
PARTICIPANT IN THE DTC, DEPOSITED TO SUCH PARTICIPANT'S ACCOUNT AT THE DTC) AND
NEITHER THE BOX ENTITLED "SPECIAL DELIVERY INSTRUCTIONS" NOR THE BOX ENTITLED
"SPECIAL REGISTRATION INSTRUCTIONS" HAS BEEN COMPLETED, OR (II) SUCH OUTSTANDING
NOTES ARE TENDERED FOR THE ACCOUNT OF AN ELIGIBLE INSTITUTION.  IN ALL OTHER
CASES, ALL SIGNATURES ON THIS LETTER OF TRANSMITTAL (OR FACSIMILE HEREOF) MUST
BE GUARANTEED BY AN ELIGIBLE INSTITUTION.

     6.  SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS.  Tendering holders should
indicate, in the applicable box or boxes, the name and address to which New
Notes or substitute Outstanding Notes for principal amounts not tendered or not
accepted for exchange are to be issued or sent, if different from the name and
address of the person signing this Letter of Transmittal.  In the case of
issuance in a different name, the taxpayer identification or social security
number of the person named must also be indicated.  Holders tendering
Outstanding Notes by book-entry transfer may request that Outstanding Notes not
exchanged be credited to such account maintained at the DTC as such noteholder
may designate hereon.  If no such instructions are given, such Outstanding Notes
not exchanged will be returned to the name and address (or account number) of
the person signing this Letter of Transmittal.

     7.  TRANSFER TAXES.  The Issuer will pay all transfer taxes, if any,
applicable to the exchange of Outstanding Notes pursuant to an Exchange Offer.
If, however, New Notes or Outstanding Notes for principal amounts not tendered
or accepted for exchange are to be delivered to, or are to be registered or
issued in the name of, any person other than the registered holder of the
Outstanding Notes tendered hereby, or if tendered Outstanding Notes are
registered in the name of any person other than the person signing this Letter
of Transmittal, or if a transfer tax is imposed for any reason other than the
exchange of Outstanding Notes pursuant to an Exchange Offer, then the amount of
any such transfer taxes (whether imposed on the registered holder or any other
persons) will be payable by the tendering holder.  If satisfactory evidence of
payment of such taxes or exemption therefrom is not submitted with this Letter
of Transmittal, the amount of such transfer taxes will be billed directly to
such tendering holder and the Exchange Agent will retain possession of an amount
of Exchange Notes with a face amount at least equal to the amount of such
transfer taxes due by such tendering holder pending receipt by the Exchange
Agent of the amount of such taxes.

     8.  TAX IDENTIFICATION NUMBER.  Federal income tax law requires that a
holder of any Outstanding Notes or New Notes must provide the Issuer (as payor)
with its correct taxpayer identification number ("TIN"), which, in the case of a
holder who is an individual is his or her social security number.  If the Issuer
is not provided with the correct TIN, the holder or payee may be subject to a
$50 penalty imposed by Internal Revenue Service and backup withholding of 31% on
interest payments on the New Notes.

     To prevent backup withholding, each tendering holder and each prospective
holder must provide such holder's correct TIN by completing the Substitute Form
W-9 set forth herein, certifying that the TIN provided is correct (or that

                                      13
<PAGE>

such holder is awaiting a TIN), and that (i) the holder has not been notified by
the Internal Revenue Service that such holder is subject to backup withholding
as a result of failure to report all interest or dividends or (ii) the Internal
Revenue Service has notified the holder that such holder is no longer subject to
backup withholding. If the New Notes will be registered in more than one name or
will not be in the name of the actual owner, consult the instructions on
Internal Revenue Service Form W-9, which may be obtained from the Exchange
Agent, for information on which TIN to report.

     Certain foreign individuals and entities will not be subject to backup
withholding or information reporting if they submit a Form W-8, signed under
penalties of perjury, attesting to their foreign status.  A Form W-8 can be
obtained from the Exchange Agent.

     If such holder does not have a TIN, such holder should consult the
instructions on Form W-9 concerning applying for a TIN, check the box in Part 3
of the Substitute Form W-9, write "applied for" in lieu of its TIN and sign and
date the form and the Certificate of Awaiting Taxpayer Identification Number.
Checking this box, writing "applied for" on the form and signing such
certificate means that such holder has already applied for a TIN or that such
holder intends to apply for one in the near future.  If such holder does not
provide its TIN to the Issuer within 60 days, backup withholding will begin and
continue until such holder furnishes its TIN to the Issuer.

     The Issuer reserves the right in its sole discretion to take whatever steps
are necessary to comply with the Issuer's obligations regarding backup
withholding.

     9.  VALIDITY OF TENDERS.  All questions as to the validity, form,
eligibility (including time of receipt), acceptance and withdrawal of tendered
Outstanding Notes will be determined by the Issuer in its sole discretion, which
determination will be final and binding.  The Issuer reserves the absolute right
to reject any and all Outstanding Notes not properly tendered or any Outstanding
Notes the Issuer's acceptance of which might, in the opinion of the Issuer or
its counsel, be unlawful.  The Issuer also reserves the absolute right to waive
any conditions of an Exchange Offer or defects or irregularities of tenders as
to particular Outstanding Notes.  The Issuer's interpretation of the terms and
conditions of an Exchange Offer (including this Letter of Transmittal and the
instructions hereto) shall be final and binding on all parties.  Unless waived,
any defects or irregularities in connection with tenders of Outstanding Notes
must be cured within such time as the Issuer shall determine.  Neither the
Issuer, the Exchange Agent nor any other person shall be under any duty to give
notification of defects or irregularities with respect to tenders of Outstanding
Notes nor shall any of them incur any liability for failure to give such
notification.

     10.  WAIVER OF CONDITIONS.  The Issuer reserves the absolute right to
waive, in whole or part, any of the conditions to an Exchange Offer set forth in
the Prospectus.

     11.  NO CONDITIONAL TENDER.  No alternative, conditional, irregular or
contingent tender of Outstanding Notes will be accepted.

     12.  MUTILATED, LOST, STOLEN OR DESTROYED OUTSTANDING NOTES.  Any holder
whose Outstanding Notes have been mutilated, lost, stolen or destroyed should
contact the Exchange Agent at the address indicated above for further
instructions.  This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, stolen or destroyed
Outstanding Notes have been followed.

     13.  REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Requests for assistance
or for additional copies of the Prospectus or this Letter of Transmittal may be
directed to the Exchange Agent at the address or telephone number set forth on
the cover page of this Letter of Transmittal.  Holders may also contact their
broker, dealer, commercial bank, trust company or other nominee for assistance
concerning an Exchange Offer.

     14.  WITHDRAWAL.  Tenders may be withdrawn only pursuant to the limited
withdrawal rights set forth in the Prospectus under the caption "The Exchange
Offers--Withdrawal of Tenders."

IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE HEREOF OR
AN AGENT'S MESSAGE IN LIEU THEREOF (TOGETHER WITH THE OUTSTANDING NOTES
DELIVERED BY BOOK-ENTRY TRANSFER OR IN ORIGINAL HARD COPY FORM)

                                      14
<PAGE>

MUST BE RECEIVED BY THE EXCHANGE AGENT, OR THE NOTICE OF GUARANTEED DELIVERY
MUST BE RECEIVED BY THE EXCHANGE AGENT, PRIOR TO THE EXPIRATION DATE.

<TABLE>
<S>                             <C>                                                           <C>
         Substitute             Part 1 -- Please Provide Your Tin in the Box at Right          _______________________________
          Form W-9                     and Certify By Signing and Dating Below                      Social Security Number
                                                                                                              or
                                                                                                ______________________________
                                                                                                Employer Identification number

- ------------------------------------------------------------------------------------------------------------------------------
                                Part 2 -- Certification -- Under penalties of                             Part 3 --
                                perjury, I certify that:

                                (1)  The number shown on this form is my correct         Awaiting TIN   [ ]
                                Taxpayer Identification Number (or I have checked the
- -----------------------------   box in part 3 and executed the certificate of
Name                            awaiting taxpayer identification number below) and

- -----------------------------   (2)  I am not subject to back withholding either         Please Complete the Certificate of Awaiting
Address (Number and Street)     because I have not been notified by the Internal         Taxpayer Identification Number below.
                                Revenue Service ("IRS") that I am subject to backup
- -----------------------------   withholding as a result of failure to report all
City, State and Zip Code        interest or dividends, or because the IRS has
                                notified me that I am no longer subject to backup
                                withholding.
                             ----------------------------------------------------------------------------------------------------
Department of the Treasury
Internal Revenue Service

Payor's Request for Taxpayer    Certificate Instructions -- You must cross out item (2) in Part 2 above if you have been notified by
Identification Number (TIN)     the IRS that you are subject to backup withholding because of underreporting interest or dividends
                                on your tax return.  However, if after being notified by the IRS that you are subject to backup
                                withholding you received another notification from the IRS stating that you are no longer subject to
                                backup withholding, do not cross out item (2).

                                SIGNATURE_________________________________ DATE ________________________, 1999
</TABLE>

   FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
       OF 31% OF ANY PAYMENTS MADE TO YOU WITH RESPECT TO THE NEW NOTES.

                                      15
<PAGE>

          YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED
                  THE BOX IN PART 3 OF THE SUBSTITUTE FORM W-9

               CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

I certify under penalties of perjury that a taxpayer identification number has
not been issued to me, and either (a) I have mailed or delivered an application
to receive a taxpayer identification number to the appropriate Internal Revenue
Service Center or Social Security Administration Office or (b) I intend to mail
or deliver an application in the near future. I understand that if I do not
provide a taxpayer identification number to the payor within 60 days, 31% of all
reportable payments made to me thereafter will be withheld until I provide a
number.


- ---------------------------------------      ------------------------, 1999
                Signature                               Date

                                      16

<PAGE>

                                                                   EXHIBIT 99.11
                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                             LETTER OF TRANSMITTAL

                                      FOR

                           TENDER OF ALL OUTSTANDING

                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007
                          IN EXCHANGE FOR REGISTERED
                         9 7/8% SENIOR SECURED NOTES,
                              SERIES B, DUE 2007

THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M.,
NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.

                PLEASE READ CAREFULLY THE ATTACHED INSTRUCTIONS

If you desire to accept the Exchange Offer, this Letter of Transmittal should be
completed, signed and submitted to the Exchange Agent:

                              THE BANK OF NEW YORK

<TABLE>
<CAPTION>
<S>                                      <C>                            <C>
                                        By Mail (registered or
           By Courier:              certified mail recommended):           By Hand:

      The Bank of New York              The Bank of New York          101 Barclay St.
         101 Barclay St.             101 Barclay St., Floor 7E   Corporate Trust Services
 Corporate Trust Services Window        New York, NY  10286                Window
          Ground Level                  Attn:  Reorg. Dept.             Ground Level
       New York, NY  10286                                           New York, NY  10286
       Attn:  Reorg. Dept.                                           Attn:  Reorg. Dept.
</TABLE>

            BY FACSIMILE TRANSMISSION (ELIGIBLE INSTITUTIONS ONLY):

                                  212-815-4699

                         Attn:
                              ----------------------

                             Confirm by telephone:

                                 (212) 815-2742

     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SHOWN ABOVE OR
TRANSMISSION VIA A FACSIMILE NUMBER OTHER THAN THE ONE LISTED ABOVE WILL NOT
CONSTITUTE A VALID DELIVERY.  THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF
TRANSMITTAL SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS
COMPLETED.  FOR ANY QUESTIONS REGARDING THIS LETTER OF TRANSMITTAL OR FOR ANY
ADDITIONAL INFORMATION, YOU MAY CONTACT THE EXCHANGE AGENT BY TELEPHONE AT (212)
815-2742.
<PAGE>

     The undersigned hereby acknowledges receipt and review of the prospectus
dated  _________  , 1999 (the "Prospectus") of Lyondell Chemical Company (the
"Issuer"), Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland,
Ltd. (each a "Subsidiary Guarantor") and this Letter of Transmittal which
together constitute the Issuer's offer to exchange (the "Exchange Offer") 9 7/8%
Senior Secured Notes, Series B, Due 2007 (the "New Notes"), the issuance of
which has been registered under the Securities Act of 1933, as amended (the
"Securities Act"), for a like principal amount of issued and outstanding
unregistered 9 7/8% Senior Secured Notes, Series B, Due 2007 (the "Outstanding
Notes").  Capitalized terms used but not defined herein have the respective
meanings given to them in the Prospectus.

     THIS LETTER OF TRANSMITTAL AND RELATED DOCUMENTS PERTAIN ONLY TO THE
ISSUER'S OFFER TO EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007.
THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY.  HOLDERS ALSO HOLDING THE ISSUER'S
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     The Issuer reserves the right, at any time or from time to time, to extend
the period of time during which the Exchange Offer for the Outstanding Notes is
open, at its discretion, in which event the term "Expiration Date" shall mean
the latest date to which such Exchange Offer is extended.  The Issuer reserves
the right to extend such period independently of any other Exchange Offer.   The
Issuer shall notify The Bank of New York (the "Exchange Agent") of any extension
by oral or written notice and shall make a public announcement thereof no later
than 9:00 a.m., New York City time, on the next business day after the
previously scheduled Expiration Date.

     Registered Holders of Exchange Notes on the relevant record date for the
first interest payment date following the consummation of an Exchange Offer will
receive interest accruing from the most recent date to which interest has been
paid on the Outstanding Notes or, if no interest has been paid, from May 17,
1999.  Outstanding Notes accepted for exchange will cease to accrue interest
from and after the date of consummation of an Exchange Offer.  Holders whose
Outstanding Notes are accepted for exchange will not receive any payment in
respect of accrued interest on such Outstanding Notes otherwise payable on any
interest payment date the record date for which occurs on or after consummation
of an Exchange Offer.

     This Letter of Transmittal is to be used by a holder of Outstanding Notes
if

     .    certificates of Outstanding Notes are to be forwarded herewith; or

     .    if delivery of Outstanding Notes is to be made by book-entry transfer
          to the account maintained by the Exchange Agent at The Depository
          Trust Company (the "DTC") pursuant to the procedures set forth in the
          Prospectus under the caption "The Exchange Offers--Book-entry
          Transfer" and an "agent's message" is not delivered as described in
          the Prospectus under the caption "The Exchange Offers--Procedures for
          Tendering--Tendering Through DTC's Automated Tender Offer Program."

     Tenders by book-entry transfer may also be made by delivering an agent's
message in lieu of this Letter of Transmittal.  Holders of Outstanding Notes
whose Outstanding Notes are not immediately available, or who are unable to
deliver their Outstanding Notes, this Letter of Transmittal and all other
documents required hereby to the Exchange Agent on or prior to the Expiration
Date for the Exchange Offer, or who are unable to complete the procedure for
book-entry transfer on a timely basis, must tender their Outstanding Notes
according to the guaranteed delivery procedures set forth in the prospectus
under the caption "The Exchange Offers--Guaranteed Delivery Procedures."  See
Instruction 2 of this Letter of Transmittal.  DELIVERY OF DOCUMENTS TO THE BOOK-
ENTRY TRANSFER FACILITY DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

                                       2
<PAGE>

     The term "holder" with respect to an Exchange Offer for Outstanding Notes
means any person in whose name such Outstanding Notes are registered on the
books of Lyondell Chemical Company, any person who holds such Outstanding Notes
and has obtained a properly completed bond power from the registered holder or
any participant in the DTC system whose name appears on a security position
listing as the holder of such Outstanding Notes and who desires to deliver the
Outstanding Notes by book-entry transfer at DTC.  The undersigned has completed,
executed and delivered this Letter of Transmittal to indicate the action the
undersigned desires to take with respect to such Exchange Offer.  Holders who
wish to tender their Outstanding Notes must complete this Letter of Transmittal
in its entirety (unless such Outstanding Notes are to be tendered by book-entry
transfer and an agent's message is delivered in lieu hereof).

     PLEASE READ THE ENTIRE LETTER OF TRANSMITTAL AND THE PROSPECTUS CAREFULLY
BEFORE CHECKING ANY BOX BELOW.  THE INSTRUCTIONS INCLUDED WITH THIS LETTER OF
TRANSMITTAL MUST BE FOLLOWED.  QUESTIONS AND REQUESTS FOR ASSISTANCE OR FOR
ADDITIONAL COPIES OF THE PROSPECTUS AND THIS LETTER OF TRANSMITTAL MAY BE
DIRECTED TO THE EXCHANGE AGENT.

     List below the Outstanding Notes to which this Letter of Transmittal
relates.  If the space below is inadequate, list the title, registered numbers
and principal amounts on a separate signed schedule and affix the list to this
Letter of Transmittal.

<TABLE>
<CAPTION>

                             DESCRIPTION OF OUTSTANDING NOTES TENDERED

                                                       Outstanding Note(s) Tendered
    Name(s) and Address(es) of         --------------------------------------------------------------
 Registered Holder(s) Exactly as                                   Aggregate Principal
             Name(s)                                                      Amount           Principal
  Appear(s) on Outstanding Notes        Title of     Registered        Represented           Amount
    (Please Fill In, If Blank)           Series      Number(s)*         by Note(s)         Tendered**
- -----------------------------------------------------------------------------------------------------
<S>                                   <C>           <C>          <C>                      <C>
                                      Lyondell
                                      Chemical
                                      Company
                                      9 7/8% Senior
                                      Secured
                                      Notes,
                                      Series B,
                                      Due 2007
- -----------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------
                                      Total
- ----------------------------------------------------------------------------------------------------
</TABLE>

*    Need not be completed by book-entry holders.
**   Unless otherwise indicated, any tendering holder of Outstanding Notes will
     be deemed to have tendered the entire aggregate principal amount
     represented by such Outstanding Notes. All tenders must be in integral
     multiples of $1,000.

[ ]  CHECK HERE IF TENDERED OUTSTANDING NOTES ARE ENCLOSED HEREWITH.


                                       3
<PAGE>

[ ] CHECK HERE AND COMPLETE THE FOLLOWING IF TENDERED OUTSTANDING NOTES ARE
    BEING DELIVERED BY BOOK-ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE
    EXCHANGE AGENT WITH THE DTC (FOR USE BY ELIGIBLE INSTITUTIONS ONLY):

Name of Tendering
Institution:
            -------------------------------------------------------------------

Book-entry Facility Account
Number(s):
          ---------------------------------------------------------------------

Transaction Code
Number(s):
          ---------------------------------------------------------------------

[ ]  CHECK HERE AND COMPLETE THE FOLLOWING IF TENDERED OUTSTANDING NOTES ARE
     BEING DELIVERED PURSUANT TO A NOTICE OF GUARANTEED DELIVERY EITHER ENCLOSED
     HEREWITH OR PREVIOUSLY DELIVERED TO THE EXCHANGE AGENT (COPY ATTACHED) (FOR
     USE BY ELIGIBLE INSTITUTIONS ONLY):

Name(s) of Registered Holder(s)
of Outstanding Notes:
                     ----------------------------------------------------------

Date of Execution of Notice of
Guaranteed Delivery:
                    -----------------------------------------------------------

Window Ticket Number
(if available):
               ----------------------------------------------------------------

Name of Eligible Institution that
Guaranteed Delivery:
                    -----------------------------------------------------------

DTC Account Number(s) (if delivered
by book-entry transfer):
                        -------------------------------------------------------

Transaction Code Number (if delivered
by book-entry transfer):
                        -------------------------------------------------------

Name of Tendering Institution (if
delivered by book-entry transfer):
                                  ---------------------------------------------

[ ]  CHECK HERE IF TENDERED OUTSTANDING NOTES ARE BEING DELIVERED BY BOOK-ENTRY
     TRANSFER AND NON-EXCHANGED OUTSTANDING NOTES ARE TO BE RETURNED BY
     CREDITING THE DTC ACCOUNT NUMBER SET FORTH ABOVE (FOR USE BY ELIGIBLE
     INSTITUTIONS ONLY).

[ ]  CHECK HERE AND COMPLETE THE FOLLOWING IF YOU ARE A BROKER-DEALER AND WISH
     TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY
     AMENDMENTS OR SUPPLEMENTS THERETO:

                                       4
<PAGE>

Name:
     --------------------------------------------------------------------------
Address:
        -----------------------------------------------------------------------

     If the undersigned is not a broker-dealer, the undersigned represents that
it is not engaged in, and does not intend to participate in, a distribution of
New Notes.  If the undersigned is a broker-dealer that will receive New Notes
for its own account in exchange for Outstanding Notes, it represents that the
New Notes are acquired as a result of market-making activities or other trading
activities and it acknowledges that it will deliver a Prospectus in connection
with any resale of such New Notes; however, by so acknowledging and by
delivering a Prospectus, the undersigned will not be deemed to admit that it is
an "underwriter" within the meaning of the Securities Act.

                                       5
<PAGE>

                       SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY.

Ladies and Gentlemen:

     Subject to the terms and conditions of the applicable Exchange Offer, the
undersigned hereby tenders to the Issuer for exchange the principal amount of
Outstanding Notes indicated above.  Subject to and effective upon the
acceptance for exchange of the principal amount of Outstanding Notes tendered in
accordance with this Letter of Transmittal, the undersigned hereby exchanges,
assigns and transfers to, or upon the order of, the Issuer all right, title and
interest in and to the Outstanding Notes tendered for exchange hereby, including
all rights to accrued and unpaid interest thereon as of the Expiration Date.
The undersigned hereby irrevocably constitutes and appoints the Exchange Agent
the true and lawful agent and attorney-in-fact for the undersigned (with full
knowledge that said Exchange Agent also acts as the agent for the Issuer in
connection with the Exchange Offer) with respect to the tendered Outstanding
Notes with full power of substitution to

     .    deliver such Outstanding Notes, or transfer ownership of such
          Outstanding Notes on the account books maintained by the DTC, to the
          Issuer and deliver all accompanying evidences of transfer and
          authenticity; and

     .    present such Outstanding Notes for transfer on the books of the Issuer
          and receive all benefits and otherwise exercise all rights of
          beneficial ownership of such Outstanding Notes, all in accordance with
          the terms of the Exchange Offer.

The power of attorney granted in this paragraph shall be deemed to be
irrevocable and coupled with an interest.

     The undersigned hereby represents and warrants that the undersigned has
full power and authority to tender, exchange, assign and transfer the
Outstanding Notes tendered hereby and to acquire the New Notes issuable upon the
exchange of such tendered Outstanding Notes, and that the Issuer will acquire
good and unencumbered title thereto, free and clear of all liens, restrictions,
charges and encumbrances and not subject to any adverse claim, when the same are
accepted for exchange by the Issuer as contemplated herein.

     The undersigned acknowledges that the Exchange Offer is being made in
reliance upon interpretations set forth in no-action letters issued to third
parties by the staff of the Securities and Exchange Commission (the "SEC"),
including Exxon Capital Holdings Corporation (available April 13, 1988), Morgan
Stanley & Co. Incorporated (available June 5, 1991), Shearman & Sterling
(available July 2, 1993) and similar no-action letters (the "Prior No-Action
Letters"), that the New Notes issued in exchange for Outstanding Notes pursuant
to the Exchange Offer may be offered for resale or resold and otherwise
transferred by holders thereof (other than any such holder that is an
"affiliate" of the Issuer or any Subsidiary Guarantor within the meaning of Rule
405 under the Securities Act), without compliance with the registration and
prospectus delivery provisions of the Securities Act, provided that such New
Notes are acquired in the ordinary course of such holders' business and that
such holders are not engaging in, do not intend to participate in and have no
arrangement or understanding with any person to participate in a distribution of
such New Notes.  The SEC has not, however, considered an Exchange Offer in the
context of a no-action letter and there can be no assurance that the staff of
the SEC would make a similar determination with respect to an Exchange Offer as
in other circumstances.

     The undersigned hereby further represents to the Issuer that

     .    the New Notes to be received are being acquired in the ordinary course
          of business of the person receiving such New Notes, whether or not the
          undersigned;

     .    neither the undersigned nor any such other person has an arrangement
          or understanding with any person to participate in the distribution of
          the Outstanding Notes or the New Notes within the meaning of the
          Securities Act;

                                       6
<PAGE>

     .    neither the holder nor any such other person is an "affiliate," as
          defined in Rule 405 under the Securities Act, of the Issuer or a
          broker-dealer tendering Outstanding Notes acquired directly from the
          Issuer for its own account; and

     .    if the undersigned is not a broker-dealer or is a broker-dealer but
          will not receive New Notes for its own account in exchange for
          Outstanding Notes, the undersigned represents that it is not engaged
          in, and does not intend to participate in, a distribution of New
          Notes.

     If the undersigned is a broker-dealer that will receive New Notes for its
own account in exchange for Outstanding Notes, it represents that the New Notes
are being acquired by it as a result of market-making activities or other
trading activities and it acknowledges that it will deliver a Prospectus in
connection with any resale of such New Notes.  By so acknowledging and by
delivering a Prospectus, however, the undersigned will not be deemed to admit
that it is an "underwriter" within the meaning of the Securities Act.

     The undersigned acknowledges that if the undersigned is tendering
Outstanding Notes in the Exchange Offer with the intention of participating in
any manner in a distribution of the New Notes

     .    the undersigned cannot rely on the position of the staff of the SEC
          set forth in the Prior No-Action Letters and, in the absence of an
          exemption therefrom, must comply with the registration and prospectus
          delivery requirements of the Securities Act in connection with the
          resale transaction of the New Notes, in which case the registration
          statement must contain the selling security holder information
          required by Item 507 or Item 508, as applicable, of Regulation S-K of
          the SEC; and

     .    failure to comply with such requirements in such instance could result
          in the undersigned incurring liability for which the undersigned is
          not indemnified by the Issuer.

     The undersigned will, upon request, execute and deliver any additional
documents deemed by the Exchange Agent or the Issuer to be necessary or
desirable to complete the exchange, assignment and transfer of the Outstanding
Notes tendered hereby, including the transfer of such Outstanding Notes on the
account books maintained by the DTC.

     For purposes of the Exchange Offer, the Issuer shall be deemed to have
accepted for exchange validly tendered Outstanding Notes when, as and if the
Issuer gives oral or written notice thereof to the Exchange Agent.  Any tendered
Outstanding Notes that are not accepted for exchange pursuant to the Exchange
Offer for any reason will be returned, without expense, to the undersigned at
the address shown below or at a different address as may be indicated herein
under "Special Delivery Instructions" as promptly as practicable after the
Expiration Date for such Exchange Offer.

     All authority conferred or agreed to be conferred by this Letter of
Transmittal shall survive the death, incapacity or dissolution of the
undersigned, and every obligation of the undersigned under this Letter of
Transmittal shall be binding upon the successors, assigns, heirs, executors,
administrators, trustees in bankruptcy and legal representatives. This tender
may be withdrawn only in accordance with the procedures set forth in the section
of the Prospectus entitled "The Exchange Offers--Withdrawal of Tenders."

     The undersigned acknowledges that the Issuer's acceptance of properly
tendered Outstanding Notes pursuant to the procedures described under the
caption "The Exchange Offers--Procedures for Tendering" in the Prospectus and in
the instructions hereto will constitute a binding agreement between the
undersigned and the Issuer upon the terms and subject to the conditions of the
Exchange Offer.  The undersigned further agrees that acceptance of any tendered
Outstanding Notes by the Issuer and the issuance of New Notes in exchange
therefor shall constitute performance in full by the Issuer of their obligations
under the registration rights agreement and that the Issuer shall have no
further obligations or liabilities thereunder for the registration of the
Outstanding Notes or the New Notes.

     The Exchange Offer is subject to certain conditions set forth in the
Prospectus under the caption "The Exchange Offers-- Conditions to the Exchange
Offers."  The undersigned recognizes that as a result of these conditions (which
may be waived, in whole or in part, by the Issuer), the Issuer may not be
required to exchange any of the Outstanding

                                       7
<PAGE>

Notes tendered hereby. In such event, the Outstanding Notes not exchanged will
be returned to the undersigned at the address shown below the signature of the
undersigned.

     Unless otherwise indicated under "Special Issuance Instructions," please
issue the New Notes issued in exchange for the Outstanding Notes accepted for
exchange and return any Outstanding Notes not tendered or not exchanged, in the
name(s) of the undersigned (or, in the case of a book-entry delivery of
Outstanding Notes, please credit the account indicated above maintained at the
DTC).  Similarly, unless otherwise indicated under "Special Delivery
Instructions," please mail or deliver the New Notes issued in exchange for the
Outstanding Notes accepted for exchange and any Outstanding Notes not tendered
or not exchanged (and accompanying documents, as appropriate) to the undersigned
at the address shown below the undersigned's signature(s).  In the event that
both "Special Issuance Instructions" and "Special Delivery Instructions" are
completed, please issue the New Notes issued in exchange for the Outstanding
Notes accepted for exchange in the name(s) of, and return any Outstanding Notes
not tendered or not exchanged to, the person(s) so indicated.  The undersigned
recognizes that the Issuer has no obligation pursuant to the "Special Issuance
Instructions" and "Special Delivery Instructions" to transfer any Outstanding
Notes from the name of the registered holder(s) thereof if the Issuer does not
accept for exchange any of the Outstanding Notes so tendered for exchange.

<TABLE>
<S>                                                         <C>
          SPECIAL ISSUANCE INSTRUCTIONS                                  SPECIAL DELIVERY INSTRUCTIONS
           (SEE INSTRUCTIONS 5 AND 6)                                      (SEE INSTRUCTIONS 5 AND 6)

 To be completed ONLY (i) if Outstanding Notes in a         To be completed ONLY if Outstanding Notes in a
 principal amount not tendered, or New Notes issued in      principal amount not tendered, or New Notes issued, in
 exchange for Outstanding Notes accepted for                exchange for Outstanding Notes accepted for exchange,
 exchange, are to be issued in the name of someone          are to be mailed or delivered to someone other than the
 other than the undersigned, or (ii) if Outstanding         undersigned, or to the undersigned at an address other
 Notes tendered by book-entry transfer which are not        than that shown below the undersigned's signature.
 exchanged are to be returned by credit to an account       Mail or deliver New Notes and/or Old Notes to:
 maintained at the DTC other than the DTC Account
 Number set forth above.  Issue New Notes and/or
 Outstanding Notes to:

Name:                                                       Name:
     ----------------------------------------------------        ---------------------------------------------------
Address:                                                    Address:
        -------------------------------------------------           ------------------------------------------------

- ---------------------------------------------------------   --------------------------------------------------------
                   (Include Zip Code)                                           (Include Zip Code)

- ---------------------------------------------------------   --------------------------------------------------------
     (Tax Identification or Social Security Number)               (Tax Identification or Social Security Number)

                (Please Type or Print)                                         (Please Type or Print)
</TABLE>

[ ]  Credit unexchanged Outstanding Notes delivered by book-entry transfer to
     the DTC account number set forth below:

DTC Account Number:
                   ---------------------------------------------------------

                                       8
<PAGE>

                                   IMPORTANT
                        PLEASE SIGN HERE WHETHER OR NOT
             OUTSTANDING NOTES ARE BEING PHYSICALLY TENDERED HEREBY
               (Complete Accompanying Substitute Form W-9 Below)

X
 ------------------------------------------------------------------------------
X
 ------------------------------------------------------------------------------
          (Signature(s) of Registered Holder(s) of Outstanding Notes)

Dated ___________, 1999

(The above lines must be signed by the registered holder(s) of Outstanding Notes
as your name(s) appear(s) on the Outstanding Notes or on a security position
listing, or by person(s) authorized to become registered holder(s) by a properly
completed bond power from the registered holder(s), a copy of which must be
transmitted with this Letter of Transmittal.  If Outstanding Notes to which this
Letter of Transmittal relate are held of record by two or more joint holders,
then all such holders must sign this Letter of Transmittal.  If signature is by
a trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary or representative capacity,
then such person must (i) set forth his or her full title below and (ii) unless
waived by the Issuer, submit evidence satisfactory to the Issuer of such
person's authority so to act.  See Instruction 5 regarding the completion of
this Letter of Transmittal, printed below.)

Name(s):
        -----------------------------------------------------------------------
                             (Please Type or Print)
Capacity (Full Title):
                      ---------------------------------------------------------
Address:
        -----------------------------------------------------------------------

- -------------------------------------------------------------------------------
                               (Include Zip Code)

Area Code and Telephone Number:
                               ------------------------------------------------

Taxpayer Identification or Social Security Number:
                                                  -----------------------------

                                       9
<PAGE>

                         MEDALLION SIGNATURE GUARANTEE
                         (IF REQUIRED BY INSTRUCTION 5)

Certain signatures must be guaranteed by an Eligible Institution.

Signature(s) Guaranteed by an
Eligible Institution:
                     --------------------------------------------------------
                                  (Authorized Signature)

- -------------------------------------------------------------------------------
                                    (Title)

- -------------------------------------------------------------------------------
                                 (Name of Firm)

- -------------------------------------------------------------------------------
                         (Address, Including Zip Code)

- -------------------------------------------------------------------------------
                        (Area Code and Telephone Number)

Dated:                        , 1999
      ------------------------

                                       10
<PAGE>

                     INSTRUCTIONS TO LETTER OF TRANSMITTAL
         FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

     1.  DELIVERY OF THIS LETTER OF TRANSMITTAL AND OUTSTANDING NOTES OR
AGENT'S MESSAGE AND BOOK-ENTRY CONFIRMATIONS.   All physically delivered
Outstanding Notes or any confirmation of a book-entry transfer to the Exchange
Agent's account at the DTC of Outstanding Notes tendered by book-entry transfer
(a "Book-entry Confirmation"), as well as a properly completed and duly executed
copy of this Letter of Transmittal or facsimile hereof (or an agent's message in
lieu hereof), and any other documents required by this Letter of Transmittal
must be received by the Exchange Agent at its address set forth herein on or
prior to 5:00 p.m., New York City time, on the Expiration Date for the Exchange
Offer, or the tendering holder must comply with the guaranteed delivery
procedures set forth below.  Outstanding Notes tendered hereby must be in
denominations of principal amount of $1,000 and any integral multiple thereof.
THE METHOD OF DELIVERY OF THE TENDERED OUTSTANDING NOTES, THIS LETTER OF
TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE
ELECTION AND RISK OF THE HOLDER AND, EXCEPT AS OTHERWISE PROVIDED BELOW, THE
DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED OR CONFIRMED BY THE
EXCHANGE AGENT.  INSTEAD OF DELIVERY BY MAIL, IT IS RECOMMENDED THAT THE HOLDER
USE AN OVERNIGHT OR HAND DELIVERY SERVICE.  IN ALL CASES, SUFFICIENT TIME SHOULD
BE ALLOWED TO ENSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE EXPIRATION DATE.
NO LETTER OF TRANSMITTAL OR OUTSTANDING NOTES SHOULD BE SENT TO THE ISSUER.

     THIS LETTER OF TRANSMITTAL AND RELATED DOCUMENTS PERTAIN ONLY TO THE
ISSUER'S OFFER TO EXCHANGE ITS 9 7/8% SENIOR SECURED NOTES, SERIES B, DUE 2007.
THE ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR
SUBORDINATED NOTES DUE 2009, RESPECTIVELY.  HOLDERS ALSO HOLDING THE ISSUER'S
9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 10 7/8% SENIOR SUBORDINATED
NOTES DUE 2009 WHO WISH TO PARTICIPATE IN THE SEPARATE, INDEPENDENT EXCHANGE
OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND RETURN THE APPLICABLE
DOCUMENTATION RELATING TO SUCH NOTES.

     All questions as to the validity, form, eligibility (including time of
receipt) or acceptance of tendered Outstanding Notes and withdrawal of tendered
Outstanding Notes will be determined by the Issuer in its sole discretion, which
determination will be final and binding.  The Issuer reserves the absolute right
to reject any and all Outstanding Notes not properly tendered or any Outstanding
Notes the Issuer's acceptance of which would, in the opinion of counsel for the
Issuer, be unlawful.  The Issuer also reserves the right to waive any defects,
irregularities or conditions of tender as to particular Outstanding Notes.  The
Issuer's interpretation of the terms and conditions of an Exchange Offer
(including the instructions in this Letter of Transmittal) shall be final and
binding on all parties.  Unless waived, any defects or irregularities in
connection with tenders of Outstanding Notes must be cured within such time as
the Issuer shall determine.  Neither the Issuer, the Exchange Agent nor any
other person shall be under any duty to give notification of defects or
irregularities with respect to tenders of Outstanding Notes, nor shall any of
them incur any liability for failure to give such notification.  Tenders of
Outstanding Notes will not be deemed to have been made until such defects or
irregularities have been cured or waived.  Any Outstanding Notes received by the
Exchange Agent that are not properly tendered and as to which the defects or
irregularities have not been cured or waived will be returned by the Exchange
Agent to the tendering holders of Outstanding Notes, unless otherwise provided
in this Letter of Transmittal, as soon as practicable following the Expiration
Date.  See "The Exchange Offers" section of the Prospectus.

     2.  GUARANTEED DELIVERY PROCEDURES.  Holders who wish to tender their
Outstanding Notes and (a) whose Outstanding Notes are not immediately available,
or (b) who cannot deliver their Outstanding Notes, this Letter of Transmittal or
any other documents required hereby to the Exchange Agent prior to the
applicable Expiration Date or (c) who are unable to comply with the applicable
procedures under the DTC's Automated Tender Offer Program on a timely basis,
must tender their Outstanding Notes according to the guaranteed delivery
procedures set forth in the Prospectus.

                                       11
<PAGE>

     Pursuant to such procedures:

     .    such tender must be made by or through a financial institution
          (including most banks, savings and loan associations and brokerage
          houses) that is a participant in the Securities Transfer Agents
          Medallion Program, the New York Stock Exchange Medallion Program or
          the Stock Exchanges Medallion Program approved by the Securities
          Transfer Association Inc. (an "Eligible Institution");

     .    prior to the applicable Expiration Date, the Exchange Agent must have
          received from the Eligible Institution a properly completed and duly
          executed Notice of Guaranteed Delivery (by facsimile transmission,
          mail or hand delivery) or a properly transmitted agent's message and
          Notice of Guaranteed Delivery setting forth the name and address of
          the holder of the Outstanding Notes, the registration number(s) of
          such Outstanding Notes and the total principal amount of Outstanding
          Notes tendered, stating that the tender is being made thereby and
          guaranteeing that, within five New York Stock Exchange trading days
          after such Expiration Date, this Letter of Transmittal (or facsimile
          hereof or an agent's message in lieu hereof) together with the
          Outstanding Notes in proper form for transfer (or a Book-entry
          Confirmation) and any other documents required by this Letter of
          Transmittal will be deposited by the Eligible Institution with the
          Exchange Agent; and

     .    this Letter of Transmittal (or a facsimile hereof or an agent's
          message in lieu hereof) together with the certificates for all
          physically tendered Outstanding Notes in proper form for transfer (or
          Book-entry Confirmation, as the case may be) and all other documents
          required hereby are received by the Exchange Agent within five New
          York Stock Exchange trading days after such Expiration Date.

     Any holder of Outstanding Notes who wishes to tender Outstanding Notes
pursuant to the guaranteed delivery procedures described above must ensure that
the Exchange Agent receives the Notice of Guaranteed Delivery prior to 5:00
p.m., New York City time, on the applicable Expiration Date.  Upon request of
the Exchange Agent, a Notice of Guaranteed Delivery will be sent to holders who
wish to tender their Outstanding Notes according to the guaranteed delivery
procedures set forth above.  See "The Exchange Offers--Guaranteed Delivery
Procedures" section of the prospectus.

     3.  TENDER BY HOLDER.  Only a registered holder of Outstanding Notes may
tender such Outstanding Notes in the Exchange Offer.  Any beneficial holder of
Outstanding Notes who is not the registered holder and who wishes to tender
should arrange with the registered holder to execute and deliver this Letter of
Transmittal on his behalf or must, prior to completing and executing this Letter
of Transmittal and delivering his Outstanding Notes, either make appropriate
arrangements to register ownership of the Outstanding Notes in such holder's
name or obtain a properly completed bond power from the registered holder.

     4.  PARTIAL TENDERS (NOT APPLICABLE TO HOLDERS WHO TENDER BY BOOK-ENTRY
TRANSFER).  Tenders of Outstanding Notes will be accepted only in integral
multiples of $1,000.  If less than the entire principal amount of any
Outstanding Notes is tendered, the tendering holder should fill in the principal
amount tendered in the third column of the box entitled "Description of
Outstanding Notes Tendered" above.  The entire principal amount of Outstanding
Notes delivered to the Exchange Agent will be deemed to have been tendered
unless otherwise indicated.  If the entire principal amount of all Outstanding
Notes is not tendered, then Outstanding Notes for the principal amount of
Outstanding Notes not tendered and New Notes issued in exchange for any
Outstanding Notes accepted will be returned to the holder as promptly as
practicable after the Outstanding Notes are accepted for exchange.

     5.  SIGNATURES ON THIS LETTER OF TRANSMITTAL; BOND POWERS AND
ENDORSEMENTS; MEDALLION GUARANTEE OF SIGNATURES.  If this Letter of Transmittal
(or facsimile hereof) is signed by the record holder(s) of the Outstanding Notes
tendered hereby, the signature(s) must correspond exactly with the name(s) as
written on the face of the Outstanding Notes without alteration, enlargement or
any change whatsoever.  If this Letter of Transmittal (or facsimile hereof) is
signed by a participant in the DTC, the signature must correspond with the name
as it appears on the security position listing as the holder of the Outstanding
Notes.

                                       12
<PAGE>

     If any tendered Outstanding Notes are owned of record by two or more joint
owners, all of such owners must sign this Letter of Transmittal.

     If this Letter of Transmittal (or facsimile hereof) is signed by the
registered holder(s) of Outstanding Notes listed and tendered hereby and the New
Notes issued in exchange therefor are to be issued (or any untendered principal
amount of Outstanding Notes is to be reissued) to the registered holder(s), then
said holder(s) need not and should not endorse any tendered Outstanding Notes,
nor provide a separate bond power.  In any other case, such holder(s) must
either properly endorse the Outstanding Notes tendered or transmit a properly
completed separate bond power with this Letter of Transmittal, with the
signatures on the endorsement or bond power guaranteed by an Eligible
Institution.

     If this Letter of Transmittal (or facsimile hereof) or any Outstanding
Notes or bond powers are signed by trustees, executors, administrators,
guardians, attorneys-in-fact, officers of corporations or others acting in a
fiduciary or representative capacity, such persons should so indicate when
signing, and, unless waived by the Issuer, evidence satisfactory to the Issuer
of their authority to act must be submitted with this Letter of Transmittal.

     NO SIGNATURE GUARANTEE IS REQUIRED IF (I) THIS LETTER OF TRANSMITTAL (OR
FACSIMILE HEREOF) IS SIGNED BY THE REGISTERED HOLDER(S) OF THE OUTSTANDING NOTES
TENDERED HEREIN (OR BY A PARTICIPANT IN THE DTC WHOSE NAME APPEARS ON A SECURITY
POSITION LISTING AS THE OWNER OF THE TENDERED OUTSTANDING NOTES) AND THE NEW
NOTES ARE TO BE ISSUED DIRECTLY TO SUCH REGISTERED HOLDER(S) (OR, IF SIGNED BY A
PARTICIPANT IN THE DTC, DEPOSITED TO SUCH PARTICIPANT'S ACCOUNT AT THE DTC) AND
NEITHER THE BOX ENTITLED "SPECIAL DELIVERY INSTRUCTIONS" NOR THE BOX ENTITLED
"SPECIAL REGISTRATION INSTRUCTIONS" HAS BEEN COMPLETED, OR (II) SUCH OUTSTANDING
NOTES ARE TENDERED FOR THE ACCOUNT OF AN ELIGIBLE INSTITUTION.  IN ALL OTHER
CASES, ALL SIGNATURES ON THIS LETTER OF TRANSMITTAL (OR FACSIMILE HEREOF) MUST
BE GUARANTEED BY AN ELIGIBLE INSTITUTION.

     6.  SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS.  Tendering holders should
indicate, in the applicable box or boxes, the name and address to which New
Notes or substitute Outstanding Notes for principal amounts not tendered or not
accepted for exchange are to be issued or sent, if different from the name and
address of the person signing this Letter of Transmittal.  In the case of
issuance in a different name, the taxpayer identification or social security
number of the person named must also be indicated.  Holders tendering
Outstanding Notes by book-entry transfer may request that Outstanding Notes not
exchanged be credited to such account maintained at the DTC as such noteholder
may designate hereon.  If no such instructions are given, such Outstanding Notes
not exchanged will be returned to the name and address (or account number) of
the person signing this Letter of Transmittal.

     7.  TRANSFER TAXES.  The Issuer will pay all transfer taxes, if any,
applicable to the exchange of Outstanding Notes pursuant to an Exchange Offer.
If, however, New Notes or Outstanding Notes for principal amounts not tendered
or accepted for exchange are to be delivered to, or are to be registered or
issued in the name of, any person other than the registered holder of the
Outstanding Notes tendered hereby, or if tendered Outstanding Notes are
registered in the name of any person other than the person signing this Letter
of Transmittal, or if a transfer tax is imposed for any reason other than the
exchange of Outstanding Notes pursuant to an Exchange Offer, then the amount of
any such transfer taxes (whether imposed on the registered holder or any other
persons) will be payable by the tendering holder.  If satisfactory evidence of
payment of such taxes or exemption therefrom is not submitted with this Letter
of Transmittal, the amount of such transfer taxes will be billed directly to
such tendering holder and the Exchange Agent will retain possession of an amount
of Exchange Notes with a face amount at least equal to the amount of such
transfer taxes due by such tendering holder pending receipt by the Exchange
Agent of the amount of such taxes.

     8.  TAX IDENTIFICATION NUMBER.  Federal income tax law requires that a
holder of any Outstanding Notes or New Notes must provide the Issuer (as payor)
with its correct taxpayer identification number ("TIN"), which, in the case of a
holder who is an individual is his or her social security number.  If the Issuer
is not provided with the correct TIN, the holder or payee may be subject to a
$50 penalty imposed by Internal Revenue Service and backup withholding of 31% on
interest payments on the New Notes.

     To prevent backup withholding, each tendering holder and each prospective
holder must provide such holder's correct TIN by completing the Substitute Form
W-9 set forth herein, certifying that the TIN provided is correct (or that

                                       13
<PAGE>

such holder is awaiting a TIN), and that (i) the holder has not been notified by
the Internal Revenue Service that such holder is subject to backup withholding
as a result of failure to report all interest or dividends or (ii) the Internal
Revenue Service has notified the holder that such holder is no longer subject to
backup withholding. If the New Notes will be registered in more than one name or
will not be in the name of the actual owner, consult the instructions on
Internal Revenue Service Form W-9, which may be obtained from the Exchange
Agent, for information on which TIN to report.

     Certain foreign individuals and entities will not be subject to backup
withholding or information reporting if they submit a Form W-8, signed under
penalties of perjury, attesting to their foreign status.  A Form W-8 can be
obtained from the Exchange Agent.

     If such holder does not have a TIN, such holder should consult the
instructions on Form W-9 concerning applying for a TIN, check the box in Part 3
of the Substitute Form W-9, write "applied for" in lieu of its TIN and sign and
date the form and the Certificate of Awaiting Taxpayer Identification Number.
Checking this box, writing "applied for" on the form and signing such
certificate means that such holder has already applied for a TIN or that such
holder intends to apply for one in the near future.  If such holder does not
provide its TIN to the Issuer within 60 days, backup withholding will begin and
continue until such holder furnishes its TIN to the Issuer.

     The Issuer reserves the right in its sole discretion to take whatever steps
are necessary to comply with the Issuer's obligations regarding backup
withholding.

     9.  VALIDITY OF TENDERS.  All questions as to the validity, form,
eligibility (including time of receipt), acceptance and withdrawal of tendered
Outstanding Notes will be determined by the Issuer in its sole discretion, which
determination will be final and binding.  The Issuer reserves the absolute right
to reject any and all Outstanding Notes not properly tendered or any Outstanding
Notes the Issuer's acceptance of which might, in the opinion of the Issuer or
its counsel, be unlawful.  The Issuer also reserves the absolute right to waive
any conditions of an Exchange Offer or defects or irregularities of tenders as
to particular Outstanding Notes.  The Issuer's interpretation of the terms and
conditions of an Exchange Offer (including this Letter of Transmittal and the
instructions hereto) shall be final and binding on all parties.  Unless waived,
any defects or irregularities in connection with tenders of Outstanding Notes
must be cured within such time as the Issuer shall determine.  Neither the
Issuer, the Exchange Agent nor any other person shall be under any duty to give
notification of defects or irregularities with respect to tenders of Outstanding
Notes nor shall any of them incur any liability for failure to give such
notification.

     10.  WAIVER OF CONDITIONS.  The Issuer reserves the absolute right to
waive, in whole or part, any of the conditions to an Exchange Offer set forth in
the Prospectus.

     11.  NO CONDITIONAL TENDER.  No alternative, conditional, irregular or
contingent tender of Outstanding Notes will be accepted.

     12.  MUTILATED, LOST, STOLEN OR DESTROYED OUTSTANDING NOTES.  Any holder
whose Outstanding Notes have been mutilated, lost, stolen or destroyed should
contact the Exchange Agent at the address indicated above for further
instructions.  This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, stolen or destroyed
Outstanding Notes have been followed.

     13.  REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES.  Requests for assistance
or for additional copies of the Prospectus or this Letter of Transmittal may be
directed to the Exchange Agent at the address or telephone number set forth on
the cover page of this Letter of Transmittal.  Holders may also contact their
broker, dealer, commercial bank, trust company or other nominee for assistance
concerning an Exchange Offer.

     14.  WITHDRAWAL.  Tenders may be withdrawn only pursuant to the limited
withdrawal rights set forth in the Prospectus under the caption "The Exchange
Offers--Withdrawal of Tenders."

IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE HEREOF OR
AN AGENT'S MESSAGE IN LIEU THEREOF (TOGETHER WITH THE OUTSTANDING NOTES
DELIVERED BY BOOK-ENTRY TRANSFER OR IN ORIGINAL HARD COPY FORM)

                                       14
<PAGE>

MUST BE RECEIVED BY THE EXCHANGE AGENT, OR THE NOTICE OF GUARANTEED DELIVERY
MUST BE RECEIVED BY THE EXCHANGE AGENT, PRIOR TO THE EXPIRATION DATE.

<TABLE>
<S>                             <C>                                                            <C>
         Substitute             Part 1 -- Please Provide Your Tin in the Box at Right          _______________________________
          Form W-9                     and Certify By Signing and Dating Below                      Social Security Number
                                                                                                              or
                                                                                                ______________________________
                                                                                                Employer Identification number

- ----------------------------------------------------------------------------------------------------------------------------------
                                Part 2 -- Certification -- Under penalties of                             Part 3 --
                                perjury, I certify that:

                                (1)  The number shown on this form is my correct         Awaiting TIN   [ ]
- -----------------------------   Taxpayer Identification Number (or I have checked the
Name                            box in part 3 and executed the certificate of
                                awaiting taxpayer identification number below) and
- -----------------------------   (2)  I am not subject to back withholding either         Please Complete the Certificate of Awaiting
Address (Number and Street)     because I have not been notified by the Internal         Taxpayer Identification Number below.
                                Revenue Service ("IRS") that I am subject to backup
- -----------------------------   withholding as a result of failure to report all
City, State and Zip Code        interest or dividends, or because the IRS has
                                notified me that I am no longer subject to backup
                                withholding.

                             -----------------------------------------------------------------------------------------------------
Department of the Treasury
Internal Revenue Service

Payor's Request for Taxpayer    Certificate Instructions -- You must cross out item (2) in Part 2 above if you have been notified by
Identification Number (TIN)     the IRS that you are subject to backup withholding because of underreporting interest or dividends
                                on your tax return.  However, if after being notified by the IRS that you are subject to backup
                                withholding you received another notification from the IRS stating that you are no longer subject to
                                backup withholding, do not cross out item (2).

                                SIGNATURE_________________________________ DATE ________________________, 1999
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

   FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
       OF 31% OF ANY PAYMENTS MADE TO YOU WITH RESPECT TO THE NEW NOTES.

                                       15
<PAGE>

          YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED
                  THE BOX IN PART 3 OF THE SUBSTITUTE FORM W-9

               CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

I certify under penalties of perjury that a taxpayer identification number has
not been issued to me, and either (a) I have mailed or delivered an application
to receive a taxpayer identification number to the appropriate Internal Revenue
Service Center or Social Security Administration Office or (b) I intend to mail
or deliver an application in the near future. I understand that if I do not
provide a taxpayer identification number to the payor within 60 days, 31% of all
reportable payments made to me thereafter will be withheld until I provide a
number.

                                                                       , 1999
- -----------------------------------     -------------------------------
                Signature                             Date

                                       16

<PAGE>

                                                                   EXHIBIT 99.12
                                    FORM OF

                           LYONDELL CHEMICAL COMPANY

                             LETTER OF TRANSMITTAL

                                      FOR

                           TENDER OF ALL OUTSTANDING


                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009
                          IN EXCHANGE FOR REGISTERED
                          10 7/8% SENIOR SUBORDINATED
                                NOTES DUE 2009


- --------------------------------------------------------------------------------
THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON
____________, 1999, UNLESS EXTENDED (THE "EXPIRATION DATE"). OUTSTANDING NOTES
TENDERED IN THE EXCHANGE OFFER MAY BE WITHDRAWN AT ANY TIME PRIOR TO 5:00 P.M.,
NEW YORK CITY TIME, ON THE EXPIRATION DATE FOR THE EXCHANGE OFFER.
- --------------------------------------------------------------------------------

                PLEASE READ CAREFULLY THE ATTACHED INSTRUCTIONS

If you desire to accept the Exchange Offer, this Letter of Transmittal should be
completed, signed and submitted to the Exchange Agent:

                             THE BANK OF NEW YORK

<TABLE>
<CAPTION>
<S>                                <C>                                      <C>
            By Courier:             By Mail (registered or certified              By Hand:
                                           mail recommended):
       The Bank of New York                The Bank of New York                 101 Barclay St.
         101 Barclay St.                101 Barclay St., Floor 7E       Corporate Trust Services Window
 Corporate Trust Services Window           New York, NY  10286                   Ground Level
           Ground Level                    Attn:  Reorg. Dept.                New York, NY  10286
       New York, NY  10286                                                    Attn:  Reorg. Dept.
       Attn:  Reorg. Dept.
</TABLE>

            BY FACSIMILE TRANSMISSION (ELIGIBLE INSTITUTIONS ONLY):

                                 212-815-4699
                        Attn: ________________________

                             Confirm by telephone:

                                (212) 815-2742

     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN AS SHOWN ABOVE OR
TRANSMISSION VIA A FACSIMILE NUMBER OTHER THAN THE ONE LISTED ABOVE WILL NOT
CONSTITUTE A VALID DELIVERY.  THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF
TRANSMITTAL SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS
COMPLETED.  FOR ANY QUESTIONS REGARDING THIS LETTER OF TRANSMITTAL OR FOR ANY
ADDITIONAL INFORMATION, YOU MAY CONTACT THE EXCHANGE AGENT BY TELEPHONE
AT (212)815-2742.
<PAGE>

     The undersigned hereby acknowledges receipt and review of the prospectus
dated _____________, 1999 (the "Prospectus") of Lyondell Chemical Company (the
"Issuer"), Lyondell Chemical Worldwide, Inc. and Lyondell Chemical Nederland,
Ltd. (each a "Subsidiary Guarantor") and this Letter of Transmittal which
together constitute the Issuer's offer to exchange (the "Exchange Offer")
10 7/8% Senior Subordinated Notes Due 2009 (the "New Notes"), the issuance of
which has been registered under the Securities Act of 1933, as amended (the
"Securities Act"), for a like principal amount of issued and outstanding
unregistered 10 7/8% Senior Subordinated Notes Due 2009 (the "Outstanding
Notes"). Capitalized terms used but not defined herein have the respective
meanings given to them in the Prospectus.

     THIS LETTER OF TRANSMITTAL AND RELATED DOCUMENTS PERTAIN ONLY TO THE
ISSUER'S OFFER TO EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009. THE
ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007, RESPECTIVELY. HOLDERS ALSO HOLDING THE
ISSUER'S 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007 WHO WISH TO PARTICIPATE IN THE SEPARATE,
INDEPENDENT EXCHANGE OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND
RETURN THE APPLICABLE DOCUMENTATION RELATING TO SUCH NOTES.

     The Issuer reserves the right, at any time or from time to time, to extend
the period of time during which the Exchange Offer for the Outstanding Notes is
open, at its discretion, in which event the term "Expiration Date" shall mean
the latest date to which such Exchange Offer is extended. The Issuer reserves
the right to extend such period independently of any other Exchange Offer. The
Issuer shall notify The Bank of New York (the "Exchange Agent") of any extension
by oral or written notice and shall make a public announcement thereof no later
than 9:00 a.m., New York City time, on the next business day after the
previously scheduled Expiration Date.

     Registered Holders of Exchange Notes on the relevant record date for the
first interest payment date following the consummation of an Exchange Offer will
receive interest accruing from the most recent date to which interest has been
paid on the Outstanding Notes or, if no interest has been paid, from May 17,
1999. Outstanding Notes accepted for exchange will cease to accrue interest from
and after the date of consummation of an Exchange Offer. Holders whose
Outstanding Notes are accepted for exchange will not receive any payment in
respect of accrued interest on such Outstanding Notes otherwise payable on any
interest payment date the record date for which occurs on or after consummation
of an Exchange Offer.

     This Letter of Transmittal is to be used by a holder of Outstanding Notes
if

     .    certificates of Outstanding Notes are to be forwarded herewith; or

     .    if delivery of Outstanding Notes is to be made by book-entry transfer
          to the account maintained by the Exchange Agent at The Depository
          Trust Company (the "DTC") pursuant to the procedures set forth in the
          Prospectus under the caption "The Exchange Offers--Book-entry
          Transfer" and an "agent's message" is not delivered as described in
          the Prospectus under the caption "The Exchange Offers--Procedures for
          Tendering--Tendering Through DTC's Automated Tender Offer Program."

     Tenders by book-entry transfer may also be made by delivering an agent's
message in lieu of this Letter of Transmittal.  Holders of Outstanding Notes
whose Outstanding Notes are not immediately available, or who are unable to
deliver their Outstanding Notes, this Letter of Transmittal and all other
documents required hereby to the Exchange Agent on or prior to the Expiration
Date for the Exchange Offer, or who are unable to complete the procedure for
book-entry transfer on a timely basis, must tender their Outstanding Notes
according to the guaranteed delivery procedures set forth in the prospectus
under the caption "The Exchange Offers--Guaranteed Delivery Procedures."  See
Instruction 2 of this Letter of Transmittal.  DELIVERY OF DOCUMENTS TO THE BOOK-
ENTRY TRANSFER FACILITY DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE AGENT.

                                       2
<PAGE>

     The term "holder" with respect to an Exchange Offer for Outstanding Notes
means any person in whose name such Outstanding Notes are registered on the
books of Lyondell Chemical Company, any person who holds such Outstanding Notes
and has obtained a properly completed bond power from the registered holder or
any participant in the DTC system whose name appears on a security position
listing as the holder of such Outstanding Notes and who desires to deliver the
Outstanding Notes by book-entry transfer at DTC.  The undersigned has completed,
executed and delivered this Letter of Transmittal to indicate the action the
undersigned desires to take with respect to such Exchange Offer.  Holders who
wish to tender their Outstanding Notes must complete this Letter of Transmittal
in its entirety (unless such Outstanding Notes are to be tendered by book-entry
transfer and an agent's message is delivered in lieu hereof).

     PLEASE READ THE ENTIRE LETTER OF TRANSMITTAL AND THE PROSPECTUS CAREFULLY
BEFORE CHECKING ANY BOX BELOW. THE INSTRUCTIONS INCLUDED WITH THIS LETTER OF
TRANSMITTAL MUST BE FOLLOWED. QUESTIONS AND REQUESTS FOR ASSISTANCE OR FOR
ADDITIONAL COPIES OF THE PROSPECTUS AND THIS LETTER OF TRANSMITTAL MAY BE
DIRECTED TO THE EXCHANGE AGENT.

     List below the Outstanding Notes to which this Letter of Transmittal
relates. If the space below is inadequate, list the title, registered numbers
and principal amounts on a separate signed schedule and affix the list to this
Letter of Transmittal.

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------
                                 DESCRIPTION OF OUTSTANDING NOTES TENDERED
- -------------------------------------------------------------------------------------------------------
<S>                                   <C>             <C>          <C>                      <C>
    Name(s) and Address(es) of                         Outstanding Note(s) Tendered
 Registered Holder(s) Exactly as          -------------------------------------------------------------
             Name(s)                      Title of      Registered    Aggregate Principal     Principal
  Appear(s) on Outstanding Notes          Series        Number(s)*    Amount                  Amount
    (Please Fill In, If Blank)                                        Represented             Tendered**
                                                                      by Note(s)
- -------------------------------------------------------------------------------------------------------
                                          Lyondell
                                          Chemical
                                          Company
                                          10 7/8%
                                          Senior
                                          Subordinated
                                          Notes Due
                                          2009
                                          -------------------------------------------------------------
                                          -------------------------------------------------------------
                                          -------------------------------------------------------------
                                          -------------------------------------------------------------
                                          Total
- -------------------------------------------------------------------------------------------------------
</TABLE>
*    Need not be completed by book-entry holders.
**   Unless otherwise indicated, any tendering holder of Outstanding Notes will
     be deemed to have tendered the entire aggregate principal amount
     represented by such Outstanding Notes. All tenders must be in integral
     multiples of $1,000.

[_]  CHECK HERE IF TENDERED OUTSTANDING NOTES ARE ENCLOSED HEREWITH.


                                       3
<PAGE>

[_]  CHECK HERE AND COMPLETE THE FOLLOWING IF TENDERED OUTSTANDING NOTES ARE
     BEING DELIVERED BY BOOK-ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY
     THE EXCHANGE AGENT WITH THE DTC (FOR USE BY ELIGIBLE INSTITUTIONS ONLY):

Name of Tendering
Institution:_________________________________________________________________

Book-entry Facility Account
Number(s):___________________________________________________________________

Transaction Code
Number(s):___________________________________________________________________

[_]  CHECK HERE AND COMPLETE THE FOLLOWING IF TENDERED OUTSTANDING NOTES ARE
     BEING DELIVERED PURSUANT TO A NOTICE OF GUARANTEED DELIVERY EITHER ENCLOSED
     HEREWITH OR PREVIOUSLY DELIVERED TO THE EXCHANGE AGENT (COPY ATTACHED) (FOR
     USE BY ELIGIBLE INSTITUTIONS ONLY):

Name(s) of Registered Holder(s)
of Outstanding Notes:________________________________________________________

Date of Execution of Notice of
Guaranteed Delivery:_________________________________________________________

Window Ticket Number
(if available):______________________________________________________________

Name of Eligible Institution that
Guaranteed Delivery:_________________________________________________________

DTC Account Number(s) (if delivered
by book-entry transfer):_____________________________________________________

Transaction Code Number (if delivered
by book-entry transfer):_____________________________________________________

Name of Tendering Institution (if
delivered by book-entry transfer):___________________________________________

[_]  CHECK HERE IF TENDERED OUTSTANDING NOTES ARE BEING DELIVERED BY BOOK-ENTRY
     TRANSFER AND NON-EXCHANGED OUTSTANDING NOTES ARE TO BE RETURNED BY
     CREDITING THE DTC ACCOUNT NUMBER SET FORTH ABOVE (FOR USE BY ELIGIBLE
     INSTITUTIONS ONLY).

[_]  CHECK HERE AND COMPLETE THE FOLLOWING IF YOU ARE A BROKER-DEALER AND WISH
     TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY
     AMENDMENTS OR SUPPLEMENTS THERETO:

                                       4
<PAGE>

Name:________________________________________________________________________
Address:_____________________________________________________________________

     If the undersigned is not a broker-dealer, the undersigned represents that
it is not engaged in, and does not intend to participate in, a distribution of
New Notes.  If the undersigned is a broker-dealer that will receive New Notes
for its own account in exchange for Outstanding Notes, it represents that the
New Notes are acquired as a result of market-making activities or other trading
activities and it acknowledges that it will deliver a Prospectus in connection
with any resale of such New Notes; however, by so acknowledging and by
delivering a Prospectus, the undersigned will not be deemed to admit that it is
an "underwriter" within the meaning of the Securities Act.

                                       5
<PAGE>

                       SIGNATURES MUST BE PROVIDED BELOW
             PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY.

Ladies and Gentlemen:

     Subject to the terms and conditions of the applicable Exchange Offer, the
undersigned hereby tenders to the Issuer for exchange the principal amount of
Outstanding Notes indicated above.  Subject to and effective upon the
acceptance for exchange of the principal amount of Outstanding Notes tendered in
accordance with this Letter of Transmittal, the undersigned hereby exchanges,
assigns and transfers to, or upon the order of, the Issuer all right, title and
interest in and to the Outstanding Notes tendered for exchange hereby, including
all rights to accrued and unpaid interest thereon as of the Expiration Date.
The undersigned hereby irrevocably constitutes and appoints the Exchange Agent
the true and lawful agent and attorney-in-fact for the undersigned (with full
knowledge that said Exchange Agent also acts as the agent for the Issuer in
connection with the Exchange Offer) with respect to the tendered Outstanding
Notes with full power of substitution to

     .    deliver such Outstanding Notes, or transfer ownership of such
          Outstanding Notes on the account books maintained by the DTC, to the
          Issuer and deliver all accompanying evidences of transfer and
          authenticity; and

     .    present such Outstanding Notes for transfer on the books of the Issuer
          and receive all benefits and otherwise exercise all rights of
          beneficial ownership of such Outstanding Notes, all in accordance with
          the terms of the Exchange Offer. The power of attorney granted in this
          paragraph shall be deemed to be irrevocable and coupled with an
          interest.

     The undersigned hereby represents and warrants that the undersigned has
full power and authority to tender, exchange, assign and transfer the
Outstanding Notes tendered hereby and to acquire the New Notes issuable upon the
exchange of such tendered Outstanding Notes, and that the Issuer will acquire
good and unencumbered title thereto, free and clear of all liens, restrictions,
charges and encumbrances and not subject to any adverse claim, when the same are
accepted for exchange by the Issuer as contemplated herein.

     The undersigned acknowledges that the Exchange Offer is being made in
reliance upon interpretations set forth in no-action letters issued to third
parties by the staff of the Securities and Exchange Commission (the "SEC"),
including Exxon Capital Holdings Corporation (available April 13, 1988), Morgan
Stanley & Co. Incorporated (available June 5, 1991), Shearman & Sterling
(available July 2, 1993) and similar no-action letters (the "Prior No-Action
Letters"), that the New Notes issued in exchange for Outstanding Notes pursuant
to the Exchange Offer may be offered for resale or resold and otherwise
transferred by holders thereof (other than any such holder that is an
"affiliate" of the Issuer or any Subsidiary Guarantor within the meaning of Rule
405 under the Securities Act), without compliance with the registration and
prospectus delivery provisions of the Securities Act, provided that such New
Notes are acquired in the ordinary course of such holders' business and that
such holders are not engaging in, do not intend to participate in and have no
arrangement or understanding with any person to participate in a distribution of
such New Notes. The SEC has not, however, considered an Exchange Offer in the
context of a no-action letter and there can be no assurance that the staff of
the SEC would make a similar determination with respect to an Exchange Offer as
in other circumstances.

     The undersigned hereby further represents to the Issuer that

     .    the New Notes to be received are being acquired in the ordinary course
          of business of the person receiving such New Notes, whether or not the
          undersigned;

     .    neither the undersigned nor any such other person has an arrangement
          or understanding with any person to participate in the distribution of
          the Outstanding Notes or the New Notes within the meaning of the
          Securities Act;

                                       6
<PAGE>

     .    neither the holder nor any such other person is an "affiliate," as
          defined in Rule 405 under the Securities Act, of the Issuer or a
          broker-dealer tendering Outstanding Notes acquired directly from the
          Issuer for its own account; and

     .    if the undersigned is not a broker-dealer or is a broker-dealer but
          will not receive New Notes for its own account in exchange for
          Outstanding Notes, the undersigned represents that it is not engaged
          in, and does not intend to participate in, a distribution of New
          Notes. If the undersigned is a broker-dealer that will receive New
          Notes for its own account in exchange for Outstanding Notes, it
          represents that the New Notes are being acquired by it as a result of
          market-making activities or other trading activities and it
          acknowledges that it will deliver a Prospectus in connection with any
          resale of such New Notes. By so acknowledging and by delivering a
          Prospectus, however, the undersigned will not be deemed to admit that
          it is an "underwriter" within the meaning of the Securities Act.

     The undersigned acknowledges that if the undersigned is tendering
Outstanding Notes in the Exchange Offer with the intention of participating in
any manner in a distribution of the New Notes

     .    the undersigned cannot rely on the position of the staff of the SEC
          set forth in the Prior No-Action Letters and, in the absence of an
          exemption therefrom, must comply with the registration and prospectus
          delivery requirements of the Securities Act in connection with the
          resale transaction of the New Notes, in which case the registration
          statement must contain the selling security holder information
          required by Item 507 or Item 508, as applicable, of Regulation S-K of
          the SEC; and

     .    failure to comply with such requirements in such instance could result
          in the undersigned incurring liability for which the undersigned is
          not indemnified by the Issuer.

     The undersigned will, upon request, execute and deliver any additional
documents deemed by the Exchange Agent or the Issuer to be necessary or
desirable to complete the exchange, assignment and transfer of the Outstanding
Notes tendered hereby, including the transfer of such Outstanding Notes on the
account books maintained by the DTC.

     For purposes of the Exchange Offer, the Issuer shall be deemed to have
accepted for exchange validly tendered Outstanding Notes when, as and if the
Issuer gives oral or written notice thereof to the Exchange Agent.  Any tendered
Outstanding Notes that are not accepted for exchange pursuant to the Exchange
Offer for any reason will be returned, without expense, to the undersigned at
the address shown below or at a different address as may be indicated herein
under "Special Delivery Instructions" as promptly as practicable after the
Expiration Date for such Exchange Offer.

     All authority conferred or agreed to be conferred by this Letter of
Transmittal shall survive the death, incapacity or dissolution of the
undersigned, and every obligation of the undersigned under this Letter of
Transmittal shall be binding upon the successors, assigns, heirs, executors,
administrators, trustees in bankruptcy and legal representatives. This tender
may be withdrawn only in accordance with the procedures set forth in the section
of the Prospectus entitled "The Exchange Offers--Withdrawal of Tenders."

     The undersigned acknowledges that the Issuer's acceptance of properly
tendered Outstanding Notes pursuant to the procedures described under the
caption "The Exchange Offers--Procedures for Tendering" in the Prospectus and in
the instructions hereto will constitute a binding agreement between the
undersigned and the Issuer upon the terms and subject to the conditions of the
Exchange Offer.  The undersigned further agrees that acceptance of any tendered
Outstanding Notes by the Issuer and the issuance of New Notes in exchange
therefor shall constitute performance in full by the Issuer of their obligations
under the registration rights agreement and that the Issuer shall have no
further obligations or liabilities thereunder for the registration of the
Outstanding Notes or the New Notes.

     The Exchange Offer is subject to certain conditions set forth in the
Prospectus under the caption "The Exchange Offers-- Conditions to the Exchange
Offers." The undersigned recognizes that as a result of these conditions (which
may be waived, in whole or in part, by the Issuer), the Issuer may not be
required to exchange any of the Outstanding Notes tendered hereby. In such
event, the Outstanding Notes not exchanged will be returned to the undersigned
at the address shown below the signature of the undersigned.

                                       7
<PAGE>

     Unless otherwise indicated under "Special Issuance Instructions," please
issue the New Notes issued in exchange for the Outstanding Notes accepted for
exchange and return any Outstanding Notes not tendered or not exchanged, in the
name(s) of the undersigned (or, in the case of a book-entry delivery of
Outstanding Notes, please credit the account indicated above maintained at the
DTC). Similarly, unless otherwise indicated under "Special Delivery
Instructions," please mail or deliver the New Notes issued in exchange for the
Outstanding Notes accepted for exchange and any Outstanding Notes not tendered
or not exchanged (and accompanying documents, as appropriate) to the undersigned
at the address shown below the undersigned's signature(s). In the event that
both "Special Issuance Instructions" and "Special Delivery Instructions" are
completed, please issue the New Notes issued in exchange for the Outstanding
Notes accepted for exchange in the name(s) of, and return any Outstanding Notes
not tendered or not exchanged to, the person(s) so indicated. The undersigned
recognizes that the Issuer has no obligation pursuant to the "Special Issuance
Instructions" and "Special Delivery Instructions" to transfer any Outstanding
Notes from the name of the registered holder(s) thereof if the Issuer does not
accept for exchange any of the Outstanding Notes so tendered for exchange.

<TABLE>
<S>                                                              <C>
- ----------------------------------------------------              -------------------------------------------------------
            SPECIAL ISSUANCE INSTRUCTIONS                                       SPECIAL DELIVERY INSTRUCTIONS
              (SEE INSTRUCTIONS 5 AND 6)                                           (SEE INSTRUCTIONS 5 AND 6)

To be completed ONLY (i) if Outstanding Notes in a                To be completed ONLY if Outstanding Notes in a
principal amount not tendered, or New Notes issued in             principal amount not tendered, or New Notes issued, in
exchange for Outstanding Notes accepted for                       exchange for Outstanding Notes accepted for exchange,
exchange, are to be issued in the name of someone                 are to be mailed or delivered to someone other than the
other than the undersigned, or (ii) if Outstanding                undersigned, or to the undersigned at an address other
Notes tendered by book-entry transfer which are not               than that shown below the undersigned's signature.
exchanged are to be returned by credit to an account              Mail or deliver New Notes and/or Old Notes to:
maintained at the DTC other than the DTC Account
Number set forth above.  Issue New Notes and/or
Outstanding Notes to:

Name:_______________________________________________              Name:__________________________________________________
Address:____________________________________________              Address:_______________________________________________
- ----------------------------------------------------              -------------------------------------------------------
               (Include Zip Code)                                                        (Include Zip Code)

- ----------------------------------------------------              -------------------------------------------------------
   (Tax Identification or Social Security Number)                       (Tax Identification or Social Security Number)
              (Please Type or Print)                                                (Please Type or Print)
- ----------------------------------------------------              -------------------------------------------------------
</TABLE>
[_]  Credit unexchanged Outstanding Notes delivered by book-entry transfer to
     the DTC account number set forth below:

DTC Account Number:

- --------------------------------------------------------------------------------

                                       8
<PAGE>

                                   IMPORTANT
                        PLEASE SIGN HERE WHETHER OR NOT
            OUTSTANDING NOTES ARE BEING PHYSICALLY TENDERED HEREBY
               (Complete Accompanying Substitute Form W-9 Below)

X_____________________________________________________________________________

X_____________________________________________________________________________
          (Signature(s) of Registered Holder(s) of Outstanding Notes)

Dated ___________, 1999

(The above lines must be signed by the registered holder(s) of Outstanding Notes
as your name(s) appear(s) on the Outstanding Notes or on a security position
listing, or by person(s) authorized to become registered holder(s) by a properly
completed bond power from the registered holder(s), a copy of which must be
transmitted with this Letter of Transmittal. If Outstanding Notes to which this
Letter of Transmittal relate are held of record by two or more joint holders,
then all such holders must sign this Letter of Transmittal. If signature is by a
trustee, executor, administrator, guardian, attorney-in-fact, officer of a
corporation or other person acting in a fiduciary or representative capacity,
then such person must (i) set forth his or her full title below and (ii) unless
waived by the Issuer, submit evidence satisfactory to the Issuer of such
person's authority so to act. See Instruction 5 regarding the completion of this
Letter of Transmittal, printed below.)

Name(s):________________________________________________________________________
                                (Please Type or Print)

Capacity (Full Title):__________________________________________________________

Address:________________________________________________________________________
________________________________________________________________________________
                                  (Include Zip Code)

Area Code and Telephone Number:_________________________________________________

Taxpayer Identification or Social Security Number:______________________________

                                       9
<PAGE>

                         MEDALLION SIGNATURE GUARANTEE
                        (IF REQUIRED BY INSTRUCTION 5)

Certain signatures must be guaranteed by an Eligible Institution.

Signature(s) Guaranteed by an
Eligible Institution:___________________________________________________________
                              (Authorized Signature)

________________________________________________________________________________
                                     (Title)

________________________________________________________________________________
                                  (Name of Firm)

________________________________________________________________________________
                            (Address, Including Zip Code)

________________________________________________________________________________
                           (Area Code and Telephone Number)

Dated:____________________________________________________________________, 1999

                                       10
<PAGE>

                     INSTRUCTIONS TO LETTER OF TRANSMITTAL
        FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER

     1.   DELIVERY OF THIS LETTER OF TRANSMITTAL AND OUTSTANDING NOTES OR
AGENT'S MESSAGE AND BOOK-ENTRY CONFIRMATIONS. All physically delivered
Outstanding Notes or any confirmation of a book-entry transfer to the Exchange
Agent's account at the DTC of Outstanding Notes tendered by book-entry transfer
(a "Book-entry Confirmation"), as well as a properly completed and duly executed
copy of this Letter of Transmittal or facsimile hereof (or an agent's message in
lieu hereof), and any other documents required by this Letter of Transmittal
must be received by the Exchange Agent at its address set forth herein on or
prior to 5:00 p.m., New York City time, on the Expiration Date for the Exchange
Offer, or the tendering holder must comply with the guaranteed delivery
procedures set forth below. Outstanding Notes tendered hereby must be in
denominations of principal amount of $1,000 and any integral multiple thereof.
THE METHOD OF DELIVERY OF THE TENDERED OUTSTANDING NOTES, THIS LETTER OF
TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE
ELECTION AND RISK OF THE HOLDER AND, EXCEPT AS OTHERWISE PROVIDED BELOW, THE
DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED OR CONFIRMED BY THE
EXCHANGE AGENT. INSTEAD OF DELIVERY BY MAIL, IT IS RECOMMENDED THAT THE HOLDER
USE AN OVERNIGHT OR HAND DELIVERY SERVICE. IN ALL CASES, SUFFICIENT TIME SHOULD
BE ALLOWED TO ENSURE DELIVERY TO THE EXCHANGE AGENT BEFORE THE EXPIRATION DATE.
NO LETTER OF TRANSMITTAL OR OUTSTANDING NOTES SHOULD BE SENT TO THE ISSUER.

     THIS LETTER OF TRANSMITTAL AND RELATED DOCUMENTS PERTAIN ONLY TO THE
ISSUER'S OFFER TO EXCHANGE ITS 10 7/8% SENIOR SUBORDINATED NOTES DUE 2009. THE
ISSUER IS CONCURRENTLY MAKING SEPARATE, INDEPENDENT OFFERS TO EXCHANGE ITS
UNREGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007 FOR A LIKE KIND AND PRINCIPAL AMOUNT OF ITS
REGISTERED 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007, RESPECTIVELY. HOLDERS ALSO HOLDING THE
ISSUER'S 9 5/8% SENIOR SECURED NOTES, SERIES A, DUE 2007 AND 9 7/8% SENIOR
SECURED NOTES, SERIES B, DUE 2007 WHO WISH TO PARTICIPATE IN THE SEPARATE,
INDEPENDENT EXCHANGE OFFERS RELATING TO SUCH NOTES WILL NEED TO COMPLETE AND
RETURN THE APPLICABLE DOCUMENTATION RELATING TO SUCH NOTES.

     All questions as to the validity, form, eligibility (including time of
receipt) or acceptance of tendered Outstanding Notes and withdrawal of tendered
Outstanding Notes will be determined by the Issuer in its sole discretion, which
determination will be final and binding. The Issuer reserves the absolute right
to reject any and all Outstanding Notes not properly tendered or any Outstanding
Notes the Issuer's acceptance of which would, in the opinion of counsel for the
Issuer, be unlawful. The Issuer also reserves the right to waive any defects,
irregularities or conditions of tender as to particular Outstanding Notes. The
Issuer's interpretation of the terms and conditions of an Exchange Offer
(including the instructions in this Letter of Transmittal) shall be final and
binding on all parties. Unless waived, any defects or irregularities in
connection with tenders of Outstanding Notes must be cured within such time as
the Issuer shall determine. Neither the Issuer, the Exchange Agent nor any other
person shall be under any duty to give notification of defects or irregularities
with respect to tenders of Outstanding Notes, nor shall any of them incur any
liability for failure to give such notification. Tenders of Outstanding Notes
will not be deemed to have been made until such defects or irregularities have
been cured or waived. Any Outstanding Notes received by the Exchange Agent that
are not properly tendered and as to which the defects or irregularities have not
been cured or waived will be returned by the Exchange Agent to the tendering
holders of Outstanding Notes, unless otherwise provided in this Letter of
Transmittal, as soon as practicable following the Expiration Date. See "The
Exchange Offers" section of the Prospectus.

     2.   GUARANTEED DELIVERY PROCEDURES. Holders who wish to tender their
Outstanding Notes and (a) whose Outstanding Notes are not immediately available,
or (b) who cannot deliver their Outstanding Notes, this Letter of Transmittal or
any other documents required hereby to the Exchange Agent prior to the
applicable Expiration Date or (c) who are unable to comply with the applicable
procedures under the DTC's Automated Tender Offer Program on a timely basis,
must tender their Outstanding Notes according to the guaranteed delivery
procedures set forth in the Prospectus.

                                       11
<PAGE>

     Pursuant to such procedures:

     .    such tender must be made by or through a financial institution
          (including most banks, savings and loan associations and brokerage
          houses) that is a participant in the Securities Transfer Agents
          Medallion Program, the New York Stock Exchange Medallion Program or
          the Stock Exchanges Medallion Program approved by the Securities
          Transfer Association Inc. (an "Eligible Institution");

     .    prior to the applicable Expiration Date, the Exchange Agent must have
          received from the Eligible Institution a properly completed and duly
          executed Notice of Guaranteed Delivery (by facsimile transmission,
          mail or hand delivery) or a properly transmitted agent's message and
          Notice of Guaranteed Delivery setting forth the name and address of
          the holder of the Outstanding Notes, the registration number(s) of
          such Outstanding Notes and the total principal amount of Outstanding
          Notes tendered, stating that the tender is being made thereby and
          guaranteeing that, within five New York Stock Exchange trading days
          after such Expiration Date, this Letter of Transmittal (or facsimile
          hereof or an agent's message in lieu hereof) together with the
          Outstanding Notes in proper form for transfer (or a Book-entry
          Confirmation) and any other documents required by this Letter of
          Transmittal will be deposited by the Eligible Institution with the
          Exchange Agent; and

     .    this Letter of Transmittal (or a facsimile hereof or an agent's
          message in lieu hereof) together with the certificates for all
          physically tendered Outstanding Notes in proper form for transfer (or
          Book-entry Confirmation, as the case may be) and all other documents
          required hereby are received by the Exchange Agent within five New
          York Stock Exchange trading days after such Expiration Date.

     Any holder of Outstanding Notes who wishes to tender Outstanding Notes
pursuant to the guaranteed delivery procedures described above must ensure that
the Exchange Agent receives the Notice of Guaranteed Delivery prior to 5:00
p.m., New York City time, on the applicable Expiration Date. Upon request of the
Exchange Agent, a Notice of Guaranteed Delivery will be sent to holders who wish
to tender their Outstanding Notes according to the guaranteed delivery
procedures set forth above. See "The Exchange Offers--Guaranteed Delivery
Procedures" section of the prospectus.

     3.   TENDER BY HOLDER. Only a registered holder of Outstanding Notes may
tender such Outstanding Notes in the Exchange Offer. Any beneficial holder of
Outstanding Notes who is not the registered holder and who wishes to tender
should arrange with the registered holder to execute and deliver this Letter of
Transmittal on his behalf or must, prior to completing and executing this Letter
of Transmittal and delivering his Outstanding Notes, either make appropriate
arrangements to register ownership of the Outstanding Notes in such holder's
name or obtain a properly completed bond power from the registered holder.

     4.   PARTIAL TENDERS (NOT APPLICABLE TO HOLDERS WHO TENDER BY BOOK-ENTRY
TRANSFER). Tenders of Outstanding Notes will be accepted only in integral
multiples of $1,000. If less than the entire principal amount of any Outstanding
Notes is tendered, the tendering holder should fill in the principal amount
tendered in the third column of the box entitled "Description of Outstanding
Notes Tendered" above. The entire principal amount of Outstanding Notes
delivered to the Exchange Agent will be deemed to have been tendered unless
otherwise indicated. If the entire principal amount of all Outstanding Notes is
not tendered, then Outstanding Notes for the principal amount of Outstanding
Notes not tendered and New Notes issued in exchange for any Outstanding Notes
accepted will be returned to the holder as promptly as practicable after the
Outstanding Notes are accepted for exchange.

     5.   SIGNATURES ON THIS LETTER OF TRANSMITTAL; BOND POWERS AND
ENDORSEMENTS; MEDALLION GUARANTEE OF SIGNATURES. If this Letter of Transmittal
(or facsimile hereof) is signed by the record holder(s) of the Outstanding Notes
tendered hereby, the signature(s) must correspond exactly with the name(s) as
written on the face of the Outstanding Notes without alteration, enlargement or
any change whatsoever. If this Letter of Transmittal (or facsimile hereof) is
signed by a participant in the DTC, the signature must correspond with the name
as it appears on the security position listing as the holder of the Outstanding
Notes.

                                       12
<PAGE>

     If any tendered Outstanding Notes are owned of record by two or more joint
owners, all of such owners must sign this Letter of Transmittal.

     If this Letter of Transmittal (or facsimile hereof) is signed by the
registered holder(s) of Outstanding Notes listed and tendered hereby and the New
Notes issued in exchange therefor are to be issued (or any untendered principal
amount of Outstanding Notes is to be reissued) to the registered holder(s), then
said holder(s) need not and should not endorse any tendered Outstanding Notes,
nor provide a separate bond power. In any other case, such holder(s) must either
properly endorse the Outstanding Notes tendered or transmit a properly completed
separate bond power with this Letter of Transmittal, with the signatures on the
endorsement or bond power guaranteed by an Eligible Institution.

     If this Letter of Transmittal (or facsimile hereof) or any Outstanding
Notes or bond powers are signed by trustees, executors, administrators,
guardians, attorneys-in-fact, officers of corporations or others acting in a
fiduciary or representative capacity, such persons should so indicate when
signing, and, unless waived by the Issuer, evidence satisfactory to the Issuer
of their authority to act must be submitted with this Letter of Transmittal.

     NO SIGNATURE GUARANTEE IS REQUIRED IF (I) THIS LETTER OF TRANSMITTAL (OR
FACSIMILE HEREOF) IS SIGNED BY THE REGISTERED HOLDER(S) OF THE OUTSTANDING NOTES
TENDERED HEREIN (OR BY A PARTICIPANT IN THE DTC WHOSE NAME APPEARS ON A SECURITY
POSITION LISTING AS THE OWNER OF THE TENDERED OUTSTANDING NOTES) AND THE NEW
NOTES ARE TO BE ISSUED DIRECTLY TO SUCH REGISTERED HOLDER(S) (OR, IF SIGNED BY A
PARTICIPANT IN THE DTC, DEPOSITED TO SUCH PARTICIPANT'S ACCOUNT AT THE DTC) AND
NEITHER THE BOX ENTITLED "SPECIAL DELIVERY INSTRUCTIONS" NOR THE BOX ENTITLED
"SPECIAL REGISTRATION INSTRUCTIONS" HAS BEEN COMPLETED, OR (II) SUCH OUTSTANDING
NOTES ARE TENDERED FOR THE ACCOUNT OF AN ELIGIBLE INSTITUTION. IN ALL OTHER
CASES, ALL SIGNATURES ON THIS LETTER OF TRANSMITTAL (OR FACSIMILE HEREOF) MUST
BE GUARANTEED BY AN ELIGIBLE INSTITUTION.

     6.   SPECIAL ISSUANCE AND DELIVERY INSTRUCTIONS. Tendering holders should
indicate, in the applicable box or boxes, the name and address to which New
Notes or substitute Outstanding Notes for principal amounts not tendered or not
accepted for exchange are to be issued or sent, if different from the name and
address of the person signing this Letter of Transmittal. In the case of
issuance in a different name, the taxpayer identification or social security
number of the person named must also be indicated. Holders tendering Outstanding
Notes by book-entry transfer may request that Outstanding Notes not exchanged be
credited to such account maintained at the DTC as such noteholder may designate
hereon. If no such instructions are given, such Outstanding Notes not exchanged
will be returned to the name and address (or account number) of the person
signing this Letter of Transmittal.

     7.   TRANSFER TAXES. The Issuer will pay all transfer taxes, if any,
applicable to the exchange of Outstanding Notes pursuant to an Exchange Offer.
If, however, New Notes or Outstanding Notes for principal amounts not tendered
or accepted for exchange are to be delivered to, or are to be registered or
issued in the name of, any person other than the registered holder of the
Outstanding Notes tendered hereby, or if tendered Outstanding Notes are
registered in the name of any person other than the person signing this Letter
of Transmittal, or if a transfer tax is imposed for any reason other than the
exchange of Outstanding Notes pursuant to an Exchange Offer, then the amount of
any such transfer taxes (whether imposed on the registered holder or any other
persons) will be payable by the tendering holder. If satisfactory evidence of
payment of such taxes or exemption therefrom is not submitted with this Letter
of Transmittal, the amount of such transfer taxes will be billed directly to
such tendering holder and the Exchange Agent will retain possession of an amount
of Exchange Notes with a face amount at least equal to the amount of such
transfer taxes due by such tendering holder pending receipt by the Exchange
Agent of the amount of such taxes.

     8.   TAX IDENTIFICATION NUMBER. Federal income tax law requires that a
holder of any Outstanding Notes or New Notes must provide the Issuer (as payor)
with its correct taxpayer identification number ("TIN"), which, in the case of a
holder who is an individual is his or her social security number. If the Issuer
is not provided with the correct TIN, the holder or payee may be subject to a
$50 penalty imposed by Internal Revenue Service and backup withholding of 31% on
interest payments on the New Notes.

     To prevent backup withholding, each tendering holder and each prospective
holder must provide such holder's correct TIN by completing the Substitute Form
W-9 set forth herein, certifying that the TIN provided is correct (or that

                                       13
<PAGE>

such holder is awaiting a TIN), and that (i) the holder has not been notified by
the Internal Revenue Service that such holder is subject to backup withholding
as a result of failure to report all interest or dividends or (ii) the Internal
Revenue Service has notified the holder that such holder is no longer subject to
backup withholding. If the New Notes will be registered in more than one name or
will not be in the name of the actual owner, consult the instructions on
Internal Revenue Service Form W-9, which may be obtained from the Exchange
Agent, for information on which TIN to report.

     Certain foreign individuals and entities will not be subject to backup
withholding or information reporting if they submit a Form W-8, signed under
penalties of perjury, attesting to their foreign status. A Form W-8 can be
obtained from the Exchange Agent.

     If such holder does not have a TIN, such holder should consult the
instructions on Form W-9 concerning applying for a TIN, check the box in Part 3
of the Substitute Form W-9, write "applied for" in lieu of its TIN and sign and
date the form and the Certificate of Awaiting Taxpayer Identification Number.
Checking this box, writing "applied for" on the form and signing such
certificate means that such holder has already applied for a TIN or that such
holder intends to apply for one in the near future. If such holder does not
provide its TIN to the Issuer within 60 days, backup withholding will begin and
continue until such holder furnishes its TIN to the Issuer.

     The Issuer reserves the right in its sole discretion to take whatever steps
are necessary to comply with the Issuer's obligations regarding backup
withholding.

     9.   VALIDITY OF TENDERS. All questions as to the validity, form,
eligibility (including time of receipt), acceptance and withdrawal of tendered
Outstanding Notes will be determined by the Issuer in its sole discretion, which
determination will be final and binding. The Issuer reserves the absolute right
to reject any and all Outstanding Notes not properly tendered or any Outstanding
Notes the Issuer's acceptance of which might, in the opinion of the Issuer or
its counsel, be unlawful. The Issuer also reserves the absolute right to waive
any conditions of an Exchange Offer or defects or irregularities of tenders as
to particular Outstanding Notes. The Issuer's interpretation of the terms and
conditions of an Exchange Offer (including this Letter of Transmittal and the
instructions hereto) shall be final and binding on all parties. Unless waived,
any defects or irregularities in connection with tenders of Outstanding Notes
must be cured within such time as the Issuer shall determine. Neither the
Issuer, the Exchange Agent nor any other person shall be under any duty to give
notification of defects or irregularities with respect to tenders of Outstanding
Notes nor shall any of them incur any liability for failure to give such
notification.

     10.  WAIVER OF CONDITIONS. The Issuer reserves the absolute right to waive,
in whole or part, any of the conditions to an Exchange Offer set forth in the
Prospectus.

     11.  NO CONDITIONAL TENDER. No alternative, conditional, irregular or
contingent tender of Outstanding Notes will be accepted.

     12.  MUTILATED, LOST, STOLEN OR DESTROYED OUTSTANDING NOTES. Any holder
whose Outstanding Notes have been mutilated, lost, stolen or destroyed should
contact the Exchange Agent at the address indicated above for further
instructions. This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, stolen or destroyed
Outstanding Notes have been followed.

     13.  REQUESTS FOR ASSISTANCE OR ADDITIONAL COPIES. Requests for assistance
or for additional copies of the Prospectus or this Letter of Transmittal may be
directed to the Exchange Agent at the address or telephone number set forth on
the cover page of this Letter of Transmittal. Holders may also contact their
broker, dealer, commercial bank, trust company or other nominee for assistance
concerning an Exchange Offer.

     14.  WITHDRAWAL. Tenders may be withdrawn only pursuant to the limited
withdrawal rights set forth in the Prospectus under the caption "The Exchange
Offers--Withdrawal of Tenders."

IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE HEREOF OR
AN AGENT'S MESSAGE IN LIEU THEREOF (TOGETHER WITH THE OUTSTANDING NOTES
DELIVERED BY BOOK-ENTRY TRANSFER OR IN ORIGINAL HARD COPY FORM)

                                       14
<PAGE>

MUST BE RECEIVED BY THE EXCHANGE AGENT, OR THE NOTICE OF GUARANTEED DELIVERY
MUST BE RECEIVED BY THE EXCHANGE AGENT, PRIOR TO THE EXPIRATION DATE.

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>                                                      <C>
         Substitute             Part 1 -- Please Provide Your Tin in the Box at Right          _______________________________
          Form W-9                     and Certify By Signing and Dating Below                      Social Security Number
                                                                                                              or
                                                                                                ______________________________
                                                                                                Employer Identification number

- ------------------------------------------------------------------------------------------------------------------------------------
                                Part 2 -- Certification -- Under penalties of                   Part 3 --
                                perjury, I certify that:

                                (1)  The number shown on this form is my correct                Awaiting TIN   [_]
                                     Taxpayer Identification Number (or I have checked the
                                     box in part 3 and executed the certificate of
- -----------------------------        awaiting taxpayer identification number below) and
Name                            (2)  I am not subject to back withholding either                Please Complete the Certificate of
                                     because I have not been notified by the Internal           Awaiting Taxpayer Identification
- -----------------------------        Revenue Service ("IRS") that I am subject to backup        Number below.
Address (Number and Street)          withholding as a result of failure to report all
                                     interest or dividends, or because the IRS has
- -----------------------------        notified me that I am no longer subject to backup
City, State and Zip Code             withholding.
                                     -----------------------------------------------------------------------------------------------
    Department of the Treasury
     Internal Revenue Service
  Payor's Request for Taxpayer       Certificate Instructions -- You must cross out item (2) in Part 2 above if you have been
   Identification Number (TIN)       notified by the IRS that you are subject to backup withholding because of underreporting
                                     interest or dividends on your tax return. However, if after being notified by the IRS that you
                                     are subject to backup withholding you received another notification from the IRS stating that
                                     you are no longer subject to backup withholding, do not cross out item (2).

                                     SIGNATURE_________________________________ DATE ________________________, 1999
- ------------------------------------------------------------------------------------------------------------------------------------
                             FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
                                 OF 31% OF ANY PAYMENTS MADE TO YOU WITH RESPECT TO THE NEW NOTES.
</TABLE>

                                       15
<PAGE>

          YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED
                 THE BOX IN PART 3 OF THE SUBSTITUTE FORM W-9

- --------------------------------------------------------------------------------

            CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER

     I certify under penalties of perjury that a taxpayer identification number
has not been issued to me, and either (a) I have mailed or delivered an
application to receive a taxpayer identification number to the appropriate
Internal Revenue Service Center or Social Security Administration Office or (b)
I intend to mail or deliver an application in the near future. I understand that
if I do not provide a taxpayer identification number to the payor within 60
days, 31% of all reportable payments made to me thereafter will be withheld
until I provide a number.

___________________________                      _______________________, 1999
         Signature                                           Date

- --------------------------------------------------------------------------------

                                       16


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