ENGELHARD CORP
424B3, 1996-07-29
PRIMARY SMELTING & REFINING OF NONFERROUS METALS
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<PAGE>
This  Prospectus Supplement relates to an effective registration statement under
the Securities Act  of 1933,  and is subject  to completion  or amendment.  This
preliminary  prospectus  supplement and  the  accompanying prospectus  shall not
constitute an offer to  sell or the  solicitation of an offer  to buy nor  shall
there  be any sale of these securities  in any jurisdiction in which such offer,
solicitation or sale would  be unlawful prior  to registration or  qualification
under the securities laws of such jurisdiction.
<PAGE>
                   Subject To Completion dated July 26, 1996
Prospectus Supplement
(To Prospectus dated July 18, 1996)
 
Engelhard Corporation
                                                              [LOGO]
$150,000,000
    % NOTES DUE            , 2001
INTEREST PAYABLE          AND
Issue price:    %
$100,000,000
    % NOTES DUE            , 2006
INTEREST PAYABLE          AND
Issue price:    %
 
Interest on the   % Notes due           , 2001 (the "2001 Notes") and on the   %
Notes due           , 2006 (the "2006 Notes") (collectively, the "Notes") is
payable semi-annually on           and           of each year, commencing    ,
1997. The 2001 Notes will not be redeemable prior to maturity and will not be
subject to any sinking fund. The 2006 Notes may be redeemed at any time at the
option of Engelhard Corporation ("Engelhard" or the "Company"), in whole or in
part, at a redemption price equal to the greater of (i) 100% of their principal
amount and (ii) the sum of the present values of the remaining scheduled
payments of principal and interest thereon discounted, on a semi-annual basis,
at the Treasury Yield (as defined herein) plus      basis points, together with
accrued interest, if any, to the date of redemption. See "Description of
Notes--Optional Redemption" herein.
 
Each series of Notes will be represented by a Global Security registered in the
name of The Depository Trust Company (the "Depositary") or its nominee. Interest
in the Global Securities will be shown on, and transfers thereof will be
effected only through, records maintained by the Depositary (with respect to
beneficial interests of participants) or by participants or persons that hold
interests through participants (with respect to beneficial interests of
beneficial owners). Except as described in the accompanying Prospectus, Notes in
certificated form will not be issued. See "Description of Securities-- Global
Securities" in the accompanying Prospectus.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS TO WHICH IT
RELATES. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                           PRICE TO            UNDERWRITING        PROCEEDS TO
                                                           PUBLIC (1)          DISCOUNT (2)        COMPANY (1)(3)
<S>                                                        <C>                 <C>                 <C>
- ---------------------------------------------------------------------------------------------------------------------
Per 2001 Note                                                               %                   %                   %
- ---------------------------------------------------------------------------------------------------------------------
Total                                                      $                   $                   $
- ---------------------------------------------------------------------------------------------------------------------
Per 2006 Note                                                               %                   %                   %
- ---------------------------------------------------------------------------------------------------------------------
Total                                                      $                   $                   $
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
(1) Plus accrued interest, if any, from July  , 1996.
 
(2) The Company has agreed to indemnify the Underwriters against certain
    liabilities, including liabilities under the Securities Act of 1933, as
    amended. See "Underwriting" herein.
 
(3) Before deducting expenses payable by the Company estimated at $270,000.
 
Each series of the Notes is offered, subject to prior sale, when, as and if
accepted by the Underwriters and subject to approval of certain legal matters by
Brown & Wood LLP, counsel for the Underwriters. It is expected that delivery of
the Notes will be made in book-entry form only on or about            , 1996
through the facilities of the Depositary, against payment therefor in
immediately available funds.
 
J.P. Morgan & Co.
                              Merrill Lynch & Co.
                                                               Smith Barney Inc.
July   , 1996
<PAGE>
IN CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE NOTES OFFERED
HEREBY AT A LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET.
SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
No dealer, salesman or any other person has been authorized to give any
information or to make any representations other than those contained or
incorporated by reference in this Prospectus Supplement and the accompanying
Prospectus, and, if given or made, such information or representations must not
be relied upon as having been authorized by the Company or by any Underwriter.
This Prospectus Supplement and the accompanying Prospectus do not constitute an
offer to sell or the solicitation of an offer to buy the Notes by anyone in any
jurisdiction in which such offer or solicitation is not authorized or in which
the person making such offer or solicitation is not qualified to do so or to any
person to whom it is unlawful to make such offer or solicitation. Neither the
delivery of this Prospectus Supplement or the Prospectus nor any sale made
hereunder and thereunder shall, under any circumstances, create any implication
that there has been no change in the affairs of the Company since the date
hereof or thereof or that the information contained or incorporated by reference
herein or therein is correct as of any time subsequent to the date of such
information.
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
                                                PROSPECTUS SUPPLEMENT
The Company................................................................................................        S-3
Recent Developments........................................................................................        S-4
Capitalization.............................................................................................        S-6
Ratio of Earnings to Fixed Charges.........................................................................        S-6
Use of Proceeds............................................................................................        S-6
Selected Pro Forma Financial Information...................................................................        S-7
Selected Historical Financial Information..................................................................        S-9
Description of Notes.......................................................................................       S-10
Underwriting...............................................................................................       S-12
Legal Opinions.............................................................................................       S-12
 
                                                PROSPECTUS
Available Information......................................................................................          2
Incorporation of Certain Documents by Reference............................................................          2
The Company................................................................................................          3
Use of Proceeds............................................................................................          4
Ratio of Earnings to Fixed Charges.........................................................................          4
Description of Securities..................................................................................          4
Description of Capital Stock...............................................................................         12
Plan of Distribution.......................................................................................         13
Legal Matters..............................................................................................         14
Experts....................................................................................................         14
</TABLE>
 
                                      S-2
<PAGE>
                                  THE COMPANY
 
Engelhard develops, manufactures and markets technology-based specialty chemical
products and engineered materials for a wide spectrum of industrial customers,
provides services to precious and base metals customers and markets
energy-related services. The Company operates on a worldwide basis with
corporate and operating headquarters and principal manufacturing facilities and
mineral reserves in the United States and with other operations conducted in the
European Community, the Russian Federation and the Asia-Pacific region.
 
The Company's businesses are organized into three segments-Catalysts and
Chemicals, Pigments and Additives, and Engineered Materials and Industrial
Commodities Management (formerly Precious Metals Management).
 
The Catalysts and Chemicals segment comprises three principal product groups:
the Environmental Technologies Group, consisting of Automotive Emission Systems,
Heavy Duty Power Systems and Process Emission Systems, serving the automotive,
light and heavy duty truck, aircraft, off-road vehicle, power generation and
process industries; the Petroleum Catalysts Group, serving the petroleum
refining industries; and the Chemical Catalysts Group, serving the chemical,
petrochemical, pharmaceutical and food processing industries. Environmental
technology catalysts are used in applications such as the abatement of carbon
monoxide, oxides of nitrogen and hydrocarbons from gasoline, diesel and
alternate fueled vehicle exhaust gases to meet emission control standards. These
catalysts are also used for the removal of odors, fumes and pollutants generated
by a variety of process industries including but not limited to the painting of
automobiles, appliances and other equipment; printing processes; the manufacture
of nitric acid and tires, in the curing of polymers; and power generation
sources. The petroleum refining catalyst products consist of a variety of
catalysts and processes used in the petroleum refining industry. The principal
products are zeolitic fluid cracking catalysts which are widely used to provide
economies in petroleum processing. The chemical catalysts products consist of
catalysts and sorbents used in the production of a variety of products or
intermediates, including synthetic fibers, fragrances, antibiotics, vitamins,
polymers, plastics, detergents, fuels and lube oils, solvents, oleochemicals and
edible products.
 
The Pigments and Additives segment comprises two principal product groups: the
Paper Pigments and Chemicals Group, serving the paper industry, and the
Specialty Minerals and Colors Group, serving the plastics, coatings, paint and
allied industries. Paper pigments and chemicals products consist primarily of
coating and extender pigments. Specialty minerals and colors products are used
as pigments and extenders for a variety of purposes in the manufacture of
plastic, rubber, ink, ceramic, adhesive products and in paint.
 
The Engineered Materials and Industrial Commodities Management segment includes
the Engineered Materials Group, serving a broad spectrum of industries, and the
Industrial Commodities Management Group, which is responsible for precious and
base metals sourcing and dealing, for managing the precious and base metals
requirements of the Company and its customers, and for power marketing. The
products of the Engineered Materials Group consist primarily of metal-based
materials such as temperature-sensing devices, precious metals coating and
electroplating materials, conductive pastes and powders and brazing alloys. In
June 1995, the Company formed a 50/50 joint venture with CLAL, a Paris-based
precious metal fabricator. The joint venture combined most of the assets of the
Engineered Materials business with CLAL. The Industrial Commodities Management
Group is responsible for procuring precious and base metals to meet the
requirements of the Company's operations and its customers. The Industrial
Commodities Management Group also engages in precious and base metals dealing
operations with industrial consumers, dealers, central banks, miners and
refiners. It also participates in refining of precious metals and marketing of
energy-related services.
 
Engelhard was organized under the laws of the State of Delaware in 1938. The
Company's address is 101 Wood Avenue, Iselin, New Jersey 08830, and its
telephone number is (908) 205-6000. Unless otherwise indicated or the context
otherwise requires, all references to "Engelhard" or the "Company" herein shall
be deemed to refer to Engelhard Corporation and its consolidated subsidiaries.
 
                                      S-3
<PAGE>
                              RECENT DEVELOPMENTS
 
Net earnings for the three months ended June 30, 1996 increased 9% to $40.1
million from $36.7 million for same period in 1995. Net earnings per share of
Common Stock for the period increased 9% to 28 cents from 26 cents for the same
period a year ago. Net sales for the three months ended June 30, 1996 were up 9%
to $783.9 million from $721.1 million for the same period in 1995. Sales gains
were achieved in all three of Engelhard's business segments. Net earnings for
the six months ended June 30, 1996 were $72.6 million, or 51 cents per share, an
increase of 13% from $64.3 million, or 45 cents per share, for the same period
in 1995. Net sales for the same period were up 10% to $1.56 billion from $1.42
billion for the same period in 1995. Total operating earnings for the three
months ended June 30, 1996 rose 9% to $70.0 million from $64.4 million for the
same period in 1995. The Catalysts and Chemicals segment generated a 24%
increase in operating earnings for the second quarter of 1996 to $34.1 million,
with all three businesses in that segment reporting increased earnings. This
segment also was aided by increased raw material yields resulting from operating
efficiencies. Sales and profitability for auto emission control catalysts were
up as a result of continuing strong customer demand for newer, advanced
technologies. Solid sales increases of fluid cracking catalysts in the United
States and Asia Pacific combined with lower expenses led to increased earnings
from the Company's petroleum catalysts business. In the chemical catalysts
business, higher volumes in almost all product segments and a favorable product
mix contributed to higher profits. Second quarter operating earnings in the
Pigments and Additives segment were flat at $22.8 million. Excluding the
earnings from The Mearl Corporation, earnings in the Pigments and Additives
segment were down 5%. Increased revenues and profits from speciality mineral
products sold to the paint, plastics and inks markets were more than offset by
lower earnings from paper pigments. Continued weak economic conditions in the
paper industry drove the decline. In the Engineered Materials and Industrial
Commodities Management segment, second quarter operating earnings declined 9% to
$13.0 million primarily because results for the 1996 quarter exclude sales and
earnings associated with the businesses placed in a joint venture with CLAL in
June 1995. Sales and earnings increased for industrial commodities management
and for the metal-fabrication businesses that remain part of Engelhard.
Contributing factors to the gains were improved operating efficiencies and
higher business activity. Increased financing costs and lower equity earnings in
the quarter were offset by favorable corporate expenses. Corporate expenses
included an after-tax, non-recurring positive net impact of less than 0.5 cents
per share resulting from an insurance recovery, which was largely offset by a
provision for legal fees related to defending an existing lawsuit.
 
Engelhard has been advised that the Securities and Exchange Commission has
issued a formal order of investigation in connection with trading in Engelhard's
stock during portions of 1995 following certain public announcements by
Engelhard, which has been the subject of a pending securities class action
litigation since late 1995. Such class action claims that Engelhard and certain
of its officers and directors made false statements and omissions and traded on
nonpublic information.
 
On May 31, 1996, the Company consummated the acquisition (the "Mearl
Acquisition") of The Mearl Corporation, a New Jersey corporation ("Mearl"), from
the stockholders of Mearl pursuant to a Stock Purchase Agreement (the "Purchase
Agreement") dated as of April 22, 1996, as amended and restated as of May 15,
1996.
 
The purchase price for the Mearl Acquisition was $272.7 million in cash. The
purchase price is subject to certain post-closing adjustments. The Company
initially financed the acquisition with bank borrowings. See "Use of Proceeds"
herein.
 
Mearl manufactures and supplies the automotive, cosmetic and industrial markets
with pearlescent pigments. Mearl also manufactures and supplies iridescent film
and other products, including natural pearl essence, lightweight concrete and
associated machinery, mica and high-purity silica sand, to a variety of markets.
It currently operates eight manufacturing facilities, two research and
development laboratories, a domestic sales and administration office and six
foreign sales offices. In 1995, Mearl had sales of approximately $134 million
and operating earnings of approximately $22 million.
 
                                      S-4
<PAGE>
The Mearl Acquisition represents a strategic expansion of one of Engelhard's
core businesses, Pigments and Additives, which accounted for 36% of Engelhard's
operating earnings in 1995. The Company's operating earnings in this segment
have grown from $55 million in 1993 to $91 million in 1995. The expansion of
this segment will provide value to both Engelhard and Mearl, as Mearl is strong
in automotive finishes and cosmetics with significant manufacturing know-how and
color styling expertise in the pearlescent pigments business while Engelhard is
strong in industrial markets including paper, plastics, and paints and coatings.
The Mearl Acquisition will allow Engelhard to enter new, high-margin, high
growth markets in the Pigments and Additives segment with existing and new
products, further penetrate existing and emerging international markets and
diversify Engelhard's product offerings. The expansion of the markets and
industries served by the Pigments and Additives business will make it less
likely that any single cyclical market would dominate the operating performance
of the Company in this segment.

Following the Mearl Acquisition, Engelhard began developing a plan to integrate
Mearl into the Company to optimize the synergistic benefits of the combined
businesses inclusive of sales, technology and costs. Due to the recent nature of
the acquisition and the complexity of Mearl's operations, Engelhard has not yet
completed this plan. Management expects to have an approved plan completed
during October 1996 and anticipates that the plan could result in additional
costs for some site shutdowns as well as for employee severance and relocation.
Additional costs associated with this plan, if any, will increase the cost of
the acquisition and result in additional goodwill.
 
                                      S-5
<PAGE>
                                 CAPITALIZATION
 
The following table sets forth (a) the pro forma consolidated capitalization of
the Company at March 31, 1996 reflecting the Mearl Acquisition and short-term
borrowings incurred to finance the Mearl Acquisition and (b) as adjusted to
reflect the sale of the Notes offered hereby and application of net proceeds
therefrom to repay the indebtedness incurred in connection with the Mearl
Acquisition. See "Use of Proceeds" herein.
 
<TABLE>
<CAPTION>
                                                                                              MARCH 31, 1996
                                                                                        --------------------------
                                                                                                        PRO FORMA,
                                                                                           PRO FORMA   AS ADJUSTED
                                                                                        ------------  ------------
                                                                                              (IN THOUSANDS)
<S>                                                                                     <C>           <C>
Cash                                                                                    $     45,069        45,069
                                                                                        ------------  ------------
                                                                                        ------------  ------------
Short-term debt                                                                         $    217,133  $    217,133
Long-term debt                                                                                     -             -
  Bank borrowings (1)                                                                        250,000             -
  Medium-Term Notes due 2000                                                                 100,000       100,000
  10% Notes due 2000 (2)                                                                      99,850        99,850
  2001 Notes                                                                                       -       150,000
  2006 Notes                                                                                       -       100,000
  Other                                                                                       25,799        25,799
                                                                                        ------------  ------------
  Total long-term debt                                                                       475,649       475,649
Total Debt                                                                                   692,782       692,782
                                                                                        ------------  ------------
                                                                                        ------------  ------------
Total Net Debt                                                                               647,713       647,713
                                                                                        ------------  ------------
                                                                                        ------------  ------------
Shareholders' equity                                                                         748,825       748,825
Total capitalization                                                                    $  1,441,607  $  1,441,607
</TABLE>
 
- --------------
 
(1) Represents $250,000 of short-term bank borrowings which have been classified
    as long-term debt for balance sheet purposes.
 
(2) The 10% Notes due 2000 were redeemed at par on July 15, 1996.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
The following table sets forth the ratio of earnings to fixed charges for the
Company for the periods indicated. In the calculation of the Company's ratio of
earnings to fixed charges, "earnings" consist of income from continuing
operations before income taxes and fixed charges (excluding capitalized
interest) and "fixed charges" consist of interest expense, including the
interest portion of rental obligations deemed representative of the interest
factor.
 
<TABLE>
<CAPTION>
  THREE MONTHS ENDED                         YEAR ENDED DECEMBER 31,
- -----------------------  ---------------------------------------------------------------
    MARCH 31, 1996          1995         1994         1993         1992         1991
- -----------------------     -----        -----        -----        -----        -----
<S>                      <C>          <C>          <C>          <C>          <C>
            5.28               6.05         6.79          (a)         7.26         5.45
</TABLE>
 
- --------------
 
(a) For fiscal 1993, earnings were insufficient to cover fixed charges by
    approximately $8.3 million. Earnings in 1993 were negatively impacted by a
    charge of approximately $148 million for the realignment and consolidation
    of businesses and environmental matters. Without such charge, the ratio of
    earnings to fixed charges for fiscal 1993 would have been 7.14.
 
                                USE OF PROCEEDS
 
The net proceeds from the sale of the Notes are estimated to be $      million.
The Company expects to use the net proceeds from the sale of the Notes to repay
a portion of the Company's borrowings incurred to finance the Mearl Acquisition.
The indebtedness to be repaid with the proceeds of the Notes was incurred
pursuant to a ninety day bridge financing and bears interest at a rate based on
LIBOR over the applicable term of the borrowings.
 
                                      S-6
<PAGE>
                    SELECTED PRO FORMA FINANCIAL INFORMATION
 
The unaudited pro forma consolidated income statement data set forth below is
based on historical financial information for the Company for the year ended
December 31, 1995 and for the three months ended March 31, 1996 and historical
financial information for Mearl for the year ended December 31, 1995 and for the
three months ended March 31, 1996. The unaudited pro forma consolidated balance
sheet data set forth below is based on historical financial information for the
Company as of March 31, 1996 and historical financial information for Mearl as
of March 31, 1996. The unaudited pro forma consolidated financial information
reflects the Mearl Acquisition and short-term borrowings (of which $250 million
has been classified as long-term debt for balance sheet purposes) incurred to
finance the Mearl Acquisition as if such transactions had occurred as of January
1, 1995 and accounted for by the purchase method of accounting. Potential future
cost savings, if any, from combining the operations of the Company and Mearl are
not reflected in the unaudited pro forma consolidated statement of income
information. The unaudited pro forma adjustments are based upon available
information and upon certain assumptions that the Company believes are
reasonable. The unaudited pro forma consolidated financial information does not
purport to be indicative of the Company's financial condition or results of
operations that would actually have been achieved had the Mearl Acquisition and
the borrowings incurred to finance the Mearl Acquisition been completed on the
dates set forth above, or that may be obtained in the future. The unaudited pro
forma consolidated financial information should be read in conjunction with the
pro forma financial statements contained in the Company's Current Report on Form
8-K/A filed July 12, 1996 and the historical financial statements and related
notes of the Company included in its Annual Report on Form 10-K for the year
ended December 31, 1995, and in its Quarterly Reports on Form 10-Q for the
quarter ended March 31, 1996, and of Mearl included in the Company's Current
Report on Form 8-K/A filed July 12, 1996, each of which is incorporated herein
by reference.
 
<TABLE>
<CAPTION>
                                          YEAR ENDED DECEMBER 31, 1995                    THREE MONTHS ENDED MARCH 31, 1996
                                 -----------------------------------------------  -------------------------------------------------
                                                         PRO FORMA                                         PRO FORMA
                                  ENGELHARD      MEARL  ADJUSTMENTS    PRO FORMA   ENGELHARD       MEARL  ADJUSTMENTS    PRO FORMA
                                 ----------  ---------  ------------  ----------  -----------  ---------  ------------  -----------
                                                             ($ IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                              <C>         <C>        <C>           <C>         <C>          <C>        <C>           <C>
INCOME STATEMENT DATA
  Net sales                      $2,840,077  $ 134,417  $    5,382(1) $2,979,876   $ 774,740   $  33,739   $     805(1)  $ 809,284
  Cost of sales                   2,379,474     79,340           -     2,458,814     664,895      20,038           -       684,933
  Selling, administrative and
   other expenses                   244,660     33,391       4,700(2)    282,751      53,860       8,071       1,200(2)     63,131
  Equity in earnings (losses)
   of affiliates                        695          -           -           695        (927)          -           -          (927)
  Net interest expense               31,326      4,836      19,800(3)     55,962       9,257       1,139       5,000(3)     15,666
  Other income                            -      5,382      (5,382)(1)          -          -         805        (805)(1)          -
  Income tax expense (benefit)       47,791      9,295      (7,500)(4)     49,586     12,976       2,225      (1,900)(4)     13,301
  Net earnings                      137,521     12,937     (17,000)      133,458      32,555       3,071      (4,300)       31,326
  Net earnings per share         $     0.96                           $     0.93   $    0.23                             $    0.22
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                MARCH 31, 1996
                                                               -------------------------------------------------
                                                                                      PRO FORMA
                                                                ENGELHARD      MEARL  ADJUSTMENTS      PRO FORMA
                                                               ----------  ---------  --------------  ----------
                                                                               ($ IN THOUSANDS)
<S>                                                            <C>         <C>        <C>             <C>
BALANCE SHEET DATA
  Cash                                                         $   38,364  $  16,705  $ (10,000)(7)   $   45,069
  Receivables                                                     288,471     30,124          -          318,595
  Inventories                                                     244,602     47,382      5,200(5)       297,184
  Other current assets                                             51,491      5,031          -           56,522
                                                               ----------  ---------  --------------  ----------
    Total current assets                                          622,928     99,242     (4,800)         717,370
  Investments                                                     223,106          -          -          223,106
  Property, plant and equipment, net                              617,111     62,706          -          679,817
  Other noncurrent assets                                         219,225     33,529    118,880 (5)(6    371,634
                                                               ----------  ---------  --------------  ----------
    Total assets                                               $1,682,370  $ 195,477  $ 114,080       $1,991,927
                                                               ----------  ---------  --------------  ----------
                                                               ----------  ---------  --------------  ----------
  Short-term bank borrowings                                   $  203,483  $       -  $  13,650 (5)(7 $  217,133
  Accounts payable                                                124,700      5,852                     130,552
  Other current liabilities                                       192,710     10,511          -          203,221
                                                               ----------  ---------  --------------  ----------
    Total current liabilities                                     520,893     16,363     13,650          550,906
  Long-term debt                                                  211,521     42,000    222,128 (5)(6    475,649
  Other noncurrent liabilities                                    201,131      7,016      8,400(5)       216,547
  Shareholders' equity                                            748,825    130,090   (130,098)(5)      748,825
                                                               ----------  ---------  --------------  ----------
    Total liabilities and shareholders' equity                 $1,682,370  $ 195,477  $ 114,080       $1,991,927
                                                               ----------  ---------  --------------  ----------
                                                               ----------  ---------  --------------  ----------
</TABLE>
 
                                      S-7
<PAGE>
- ------------------
 
(1)  Represents a reclassification to conform Mearl to Engelhard's financial
     statement presentation.
 
(2)  Represents amortization of goodwill.
 
(3)  Represents an adjustment to interest expense to reflect Engelhard's cost of
     financing the acquisition.
 
(4)  Represents an adjustment to the income tax provision to reflect the impact
     of the pro forma adjustments.
 
(5)  Reflects the acquisition of the common stock of Mearl by the Company.
 
<TABLE>
<S>                                                                    <C>
Purchase price:
  Short-term bank borrowings ($250,000 to be refinanced long term)     $  272,650
  Estimated expenses                                                        1,000
                                                                       ----------
                                                                       $  273,650
                                                                       ----------
                                                                       ----------
Net assets acquired:
  Book value as of March 31, 1996                                      $  130,098
  Adjustment of net assets to fair value
    Inventories                                                             5,200
    Deferred income taxes                                                   1,200
    Pension/postretirement liabilities                                     (8,400)
  Goodwill                                                                145,552
                                                                       ----------
                                                                       $  273,650
                                                                       ----------
                                                                       ----------
</TABLE>
 
     These fair value adjustments represent a preliminary allocation based on
     currently available information. Future changes are not expected to be
     material.
 
(6)  Represents a reclassification of $27,872 in notes receivable to notes
     payable pursuant to two advances previously made by Mearl on February 10,
     1989 and March 10, 1993 to its majority shareholder, the Estate of H.
     Martin, in the amount of $12,872 and $15,000, respectively.
 
(7)  Reflects use of excess cash of Mearl to pay down short-term borrowings.
 
                                      S-8
<PAGE>
                   SELECTED HISTORICAL FINANCIAL INFORMATION
 
The following table sets forth selected financial information for the Company
for each of the fiscal years in the five year period ended December 31, 1995 and
as of, and for the three month periods ended, March 31, 1996 and 1995
respectively. The selected financial information for the five year periods have
been derived from the Company's audited consolidated financial statements. Such
information is contained in and should be read in conjunction with the
consolidated financial statements and accompanying notes included in the
Company's Annual Reports on Form 10-K for such years, incorporated herein by
reference. The selected financial information for and at the three month period
below has been derived from the Company's unaudited interim financial
statements, which in the opinion of the Company's management include all
adjustments, consisting only of normal recurring adjustments, which the Company
considers necessary for a fair presentation of the financial position and
results of operations of the Company for these periods. Operating results and
balance sheet information as of, and for the three months, ended March 31, 1996
are not necessarily indicative of the operating results or financial condition
that may be expected for the full year. The three month information is contained
in and should be read in conjunction with the Company's Quarterly Report on Form
10-Q for such periods, incorporated herein by reference.
 
<TABLE>
<CAPTION>
                                     THREE MONTHS
                                   ENDED MARCH 31,                              YEARS ENDED DECEMBER 31,
                              --------------------------  --------------------------------------------------------------------
                                     1996          1995          1995          1994          1993          1992          1991
                              ------------  ------------  ------------  ------------  ------------  ------------  ------------
                                                        ($ IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)*
<S>                           <C>           <C>           <C>           <C>           <C>           <C>           <C>
INCOME STATEMENT DATA
  Net sales                   $   774,740   $   694,455   $ 2,840,077   $ 2,385,802   $ 2,150,865   $ 2,399,749   $ 2,436,356
  Cost of sales                   664,895       582,505     2,379,474     1,970,563     1,794,438     2,033,012     2,078,397
  Selling, administrative
   and other expenses              53,860        65,409       244,660       244,611       213,018       224,093       223,756
  Special charge (credit)               -             -             -        (8,000)      148,000             -             -
  Equity in earnings
   (losses) of affiliates            (927)         (639)          695           632         3,433         7,445         5,024
  Interest expense, net             9,527         8,072        31,326        21,954        13,696        16,231        21,658
  Net earnings                     32,555        27,609       137,521       117,980           672        10,617        87,942
  Net earnings per share(s)          0.23          0.19          0.96          0.82             -          0.07          0.58
BALANCE SHEET DATA
  Working capital             $   102,035   $    64,222   $   106,534   $    73,938   $    53,843   $   179,233   $   197,451
  Property, plant and
   equipment, net                 617,111       548,685       609,540       540,361       494,440       514,422       510,016
  Total assets                  1,682,370     1,506,925     1,645,575     1,440,759     1,279,098     1,287,737     1,256,111
  Long-term debt                  211,521       111,831       211,533       111,762       112,240       113,941       114,549
  Shareholders' equity            748,825       663,668       737,742       614,735       531,318       647,204       756,614
OTHER DATA
  Cash dividends paid per
   share                      $      0.09   $      0.08   $      0.35   $      0.30   $      0.28   $      0.25   $      0.22
  Return on average
   shareholders' equity(s)           20.0 %        20.3 %        20.3 %        20.6 %         0.1 %         1.5 %        12.0 %
  Current ratio                       1.2           1.1           1.2           1.1           1.1           1.5           1.5
  Capital spending            $    26,615   $    23,500   $   147,704   $    97,531   $   107,088   $    54,112   $    46,333
  Depreciation, depletion
   and amortization                17,404        16,463        65,450        69,104        68,177        73,798        77,819
  Net cash provided by
   operating activities            23,348        32,041       138,519       114,788       130,362       169,466       135,411
</TABLE>
 
- ------------------
* Reflects the three-for-two stock splits as of June 30, 1995, September 30,
  1993 and September 31, 1992.
 
                                      S-9
<PAGE>
                              DESCRIPTION OF NOTES
 
The following description of the Notes offered hereby supplements, and to the
extent inconsistent replaces, the description of the Securities (as defined in
the accompanying Prospectus) set forth under the heading "Description of
Securities" in the accompanying Prospectus, to which description reference is
hereby made. Capitalized terms used but not defined herein shall have the
meanings assigned to such terms in the accompanying Prospectus.
 
GENERAL
 
Each series of the Notes offered hereby will be unsecured general obligations of
the Company and will constitute a separate series of Debt Securities to be
issued under the Senior Indenture referred to in the accompanying Prospectus.
The 2001 Notes will be limited to $150 million aggregate principal amount, will
mature on          , 2001, will not be redeemable prior to maturity and will not
be subject to any sinking fund. The 2006 Notes will be limited to $100 million
aggregate principal amount, will mature on          , 2006, will be redeemable
prior to Maturity by the Company as provided below and will not be subject to
any sinking fund. Each series of Notes will bear interest at the respective rate
per annum stated on the cover page of this Prospectus Supplement from July   ,
1996 or from the most recent Interest Payment Date to which interest has been
paid or provided for, payable semi-annually in arrears on            and
          of each year (each, an "Interest Payment Date"), commencing          ,
1997, to the Person in whose name the related Note is registered at the close of
business on the preceding           or          , as the case may be (each, a
"Regular Record Date"). Interest on each series of Notes will be computed on the
basis of a 360-day year of twelve 30-day months. The Notes are to be issued only
in registered form without coupons in denominations of $1,000 and integral
multiples thereof.
 
OPTIONAL REDEMPTION
 
The 2006 Notes will be redeemable in whole or in part, at the option of the
Company, upon not less than 30 nor more than 60 days prior written notice, at
any time, at a redemption price equal to the greater of (i) 100% of their
principal amount and (ii) the sum of the present values of the remaining
scheduled payments of principal and interest thereon discounted, on a
semi-annual basis, at the Treasury Yield plus     basis points, together with
accrued interest to the date of redemption; provided, however, that interest
installments due on an Interest Payment Date which is on or prior to the date of
redemption will be payable to holders who are holders of record of such 2006
Notes (or one or more predecessor 2006 Notes) as of the close of business on the
Regular Record Date preceding such Interest Payment Date.
 
"Treasury Yield" means, with respect to any redemption date, the rate per annum
equal to the semi-annual equivalent yield to maturity of the Comparable Treasury
Issue, assuming a price of the Comparable Treasury Issue (expressed as a
percentage of its principal amount) equal to the Comparable Treasury Price for
such redemption date.
 
"Comparable Treasury Issue" means the United States Treasury security selected
by the Independent Investment Banker as having a maturity most comparable to the
remaining term of the 2006 Notes 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 2006 Notes.
 
"Independent Investment Banker" means J.P. Morgan Securities Inc. or, if such
firm is unwilling or unable to select the Comparable Treasury Issue, an
independent investment banking institution of national standing in the United
States appointed by the Trustee after consultation with the Company.
 
"Comparable Treasury Price" means, with respect to any redemption date, (i) the
average of the bid and asked prices for the Comparable Treasury Issue (expressed
in each case as a percentage of its principal amount) on the third business day
preceding such redemption date, as set forth 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 US Government Securities" or (ii)
if such release (or any successor release) is not published or does not contain
such prices on such business day, the average of the Reference Treasury Dealer
Quotations for such redemption date. "Reference Treasury Dealer Quotations"
means, with respect to each Reference Treasury Dealer
 
                                      S-10
<PAGE>
and any redemption date, the average, as determined by the 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 Trustee by such
Reference Treasury Dealer at 5:00 p.m., New York City time, on the third
business day preceding such redemption date.
 
"Reference Treasury Dealer" means each of J.P. Morgan Securities Inc., Merrill
Lynch Government Securities Inc. and Smith Barney Inc. and their respective
successors; PROVIDED, HOWEVER, that if one of the foregoing ceases to be a
primary U.S. Government securities dealer in New York City (a "Primary Treasury
Dealer") or otherwise fails to provide a Reference Treasury Dealer Quotation,
the Company will substitute therefor another Primary Treasury Dealer.
 
GLOBAL SECURITIES
 
Each series of Notes initially will be issued as Global Securities. See
"Description of Securities-Global Securities" in the accompanying Prospectus for
additional information concerning the Notes, the Indenture, and the book-entry
system. The Depository Trust Company will be the Depositary with respect to the
Notes.
 
SAME-DAY SETTLEMENT AND PAYMENT
 
Settlement for each series of Notes will be made by the Underwriters (as defined
below) in immediately available funds. All payments of principal, premium, if
any, and interest will be made by the Company in immediately available funds to
the Depositary in The City of New York. The Notes will trade in the Depositary's
Same-Day Funds Settlement System until maturity or earlier redemption, as the
case may be, and secondary market trading activity in the Notes will therefore
settle in immediately available funds.
 
                                      S-11
<PAGE>
                                  UNDERWRITING
 
Subject to the terms and conditions set forth in the Company's Underwriting
Agreement Basic Provisions and the Terms Agreement, dated the date hereof
(collectively, the "Underwriting Agreement"), the Company has agreed to sell to
each of the underwriters named below (the "Underwriters"), and each of the
Underwriters has severally agreed to purchase, the principal amount of Notes set
forth opposite its name below:
 
<TABLE>
<CAPTION>
                                                                                     PRINCIPAL AMOUNT OF NOTES
                                                                                   ------------------------------
NAME                                                                                   2001 NOTES      2006 NOTES
- ---------------------------------------------------------------------------------  --------------  --------------
<S>                                                                                <C>             <C>
J.P. Morgan Securities Inc.......................................................  $               $
Merrill Lynch, Pierce, Fenner & Smith Incorporated...............................
Smith Barney Inc.................................................................
                                                                                   --------------  --------------
    Total........................................................................  $  150,000,000  $  100,000,000
                                                                                   --------------  --------------
                                                                                   --------------  --------------
</TABLE>
 
Under the terms and conditions of the Underwriting Agreement, the Underwriters
are obligated to take and pay for all of the Notes if any are taken.
 
The Underwriters propose to offer the Notes directly to the public initially at
the initial public offering price set forth on the cover page of this Prospectus
Supplement and to certain dealers at such price less a concession not in excess
of     % of the principal amount of the 2001 Notes and     % of the principal
amount of the 2006 Notes. The Underwriters may allow, and such dealers may
re-allow, a concession not in excess of     % of the principal amount of the
2001 Notes or     % of the principal amount of the 2006 Notes to certain other
dealers. After the initial public offering, the public offering price and such
concessions may be changed by the Underwriters.
 
The Notes are new issues of securities with no established trading market and
will not be listed on any national securities exchange. The Company has been
advised by the Underwriters that the Underwriters intend to make a market for
the Notes, but are not obligated to do so and may discontinue market making at
any time without notice. No assurance can be given as to the liquidity of the
trading market for the Notes.
 
The Company has agreed to indemnify the Underwriters against certain
liabilities, including liabilities under the Securities Act of 1933, as amended,
or contribute to payments which the Underwriters may be required to make in
respect thereof.
 
In the ordinary course of their respective businesses, the Underwriters and
their affiliates have engaged and may in the future engage in commercial banking
and investment banking transactions with the Company and its affiliates.
 
                                 LEGAL OPINIONS
 
Certain legal matters in connection with the Notes will be passed upon for the
Company by Cahill Gordon & Reindel (a partnership including a professional
corporation), New York, New York, and for the Underwriters by Brown & Wood LLP,
New York, New York.
 
                                      S-12
<PAGE>
                                  $350,000,000
                             ENGELHARD CORPORATION
                                DEBT SECURITIES
 
                               ------------------
 
    Engelhard Corporation ("Engelhard" or the "Company") may offer, from time to
time,  in one or more series, its  unsecured senior debt securities (the "Senior
Debt  Securities")  and   its  unsecured  subordinated   debt  securities   (the
"Subordinated  Debt Securities" and,  together with the  Senior Debt Securities,
the "Debt Securities"). The Debt Securities may be redeemable for,  exchangeable
or  convertible into shares of Common Stock,  par value $1.00 per share ("Common
Stock"), and, to the extent applicable, references herein to the Debt Securities
also include a  reference to  Common Stock  issuable upon  any such  redemption,
conversion  or  exchange.  The Debt  Securities  will have  a  maximum aggregate
offering price of $350,000,000 (or the equivalent thereof in one or more foreign
or composite currencies) and will be offered on terms to be determined by market
conditions at the time of sale. The Debt Securities may be offered separately or
together, in separate series, in  amounts and at prices and  on terms to be  set
forth  in an accompanying prospectus  supplement (a "Prospectus Supplement"). In
addition, the specific  terms of the  Debt Securities in  respect of which  this
Prospectus  is being delivered, and whether  such Debt Securities will be listed
on a  national  securities  exchange,  will be  set  forth  in  an  accompanying
Prospectus Supplement.
 
    The  Senior Debt Securities,  if issued, will rank  equally and ratably with
all other  unsecured and  unsubordinated indebtedness  of the  Company, and  the
Subordinated  Debt Securities, if issued, will  be unsecured and subordinated to
all present and  future Senior  Indebtedness (as  defined) of  the Company.  See
"Description of Securities."
 
                            ------------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
    EXCHANGE  COMMISSION OR ANY  STATE SECURITIES COMMISSION  NOR HAS THE
       SECURITIES AND EXCHANGE  COMMISSION OR  ANY STATE  SECURITIES
            COMMISSION  PASSED UPON THE  ACCURACY OR ADEQUACY OF
                THIS PROSPECTUS. ANY REPRESENTATION TO  THE
                           CONTRARY IS A CRIMINAL OFFENSE.
 
                            ------------------------
 
    The  Debt Securities may be sold directly,  through agents from time to time
or through  underwriters and/or  dealers. If  any agent  of the  Company or  any
underwriter  is involved in  the sale of  the Debt Securities,  the name of such
agent or underwriter and any applicable commission or discount will be set forth
in an accompanying Prospectus Supplement. See "Plan of Distribution."
 
                            ------------------------
 
                 THE DATE OF THIS PROSPECTUS IS JULY 18, 1996.
<PAGE>
    No  dealer, salesman, or  any other person  has been authorized  to give any
information or  to  make  any  representations other  than  those  contained  or
incorporated  by  reference  in this  Prospectus  and,  if given  or  made, such
information or representations must not be relied upon as having been authorized
by the Company or  any underwriter, dealer, or  agent. This Prospectus does  not
constitute an offer to sell or a solicitation of an offer to buy Debt Securities
by  anyone  in  any jurisdiction  in  which  the offer  or  solicitation  is not
authorized or  in which  the person  making  the offer  or solicitation  is  not
qualified  to do so or to any person to whom it is unlawful to make the offer or
solicitation.
 
                             AVAILABLE INFORMATION
 
    The Company is subject to  the informational requirements of the  Securities
Exchange  Act  of  1934, as  amended  (the  "Exchange Act"),  and  in accordance
therewith files reports and other  information with the Securities and  Exchange
Commission  (the  "Commission") relating  to  its business,  financial position,
results of operations and other matters. Such reports and other information  can
be  inspected  and copied  at  the Public  Reference  Section maintained  by the
Commission at Judiciary Plaza,  450 Fifth Street,  N.W., Washington, D.C.  20549
and at its Regional Offices located at Citicorp Center, 500 West Madison Street,
Chicago,  Illinois 60661, and  7 World Trade  Center, 15th Floor,  New York, New
York 10048.  Copies  of such  material  can also  be  obtained from  the  Public
Reference  Section of the Commission at 450 Fifth Street, N.W., Washington, D.C.
20549, at prescribed rates. The Common Stock of the Company is listed on the New
York Stock Exchange and  such material can  also be inspected  at the office  of
such exchange at 20 Broad Street, New York, New York 10005.
 
    The  Company has  filed with  the Commission  a registration  statement (the
"Registration Statement") under  the Securities  Act of 1933,  as amended,  with
respect  to the Debt Securities covered by this Prospectus. This Prospectus does
not contain all the information set forth in the Registration Statement, certain
parts of which are omitted in accordance  with the rules and regulations of  the
Commission.  Reference is made to the Registration Statement and to the exhibits
relating thereto for  further information with  respect to the  Company and  the
Debt Securities covered by this Prospectus.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The  Company hereby  incorporates by reference  herein its  Annual Report on
Form 10-K for the fiscal year ended  December 31, 1995, its Quarterly Report  on
Form  10-Q for the quarter  ended March 31, 1996 and  its Current Report on Form
8-K filed on June 7, 1996, as amended by Form 8-K/A filed on July 12, 1996.  All
documents filed by the Company pursuant to Sections 13(a), 13(c), 14 or 15(d) of
the Exchange Act after the date of this Prospectus and before the termination of
the  offering  of the  securities offered  hereby  shall be  deemed incorporated
herein by reference, and such documents shall be deemed to be a part hereof from
the date  of filing  such documents.  Any  statement contained  herein or  in  a
document  incorporated or deemed to be incorporated by reference herein shall be
deemed to  be modified  or superseded  for purposes  of this  Prospectus to  the
extent  that a  statement contained  herein or  in any  other subsequently filed
document which  also is  or is  deemed to  be incorporated  by reference  herein
modifies  or  supersedes  such  statement. Any  such  statement  so  modified or
superseded shall  not  be  deemed,  except as  so  modified  or  superseded,  to
constitute a part of this Prospectus.
 
    The  Company  will  provide  without  charge to  each  person  to  whom this
Prospectus is delivered, on the  written or oral request  of any such person,  a
copy  of any  or all  of the  above documents  incorporated herein  by reference
(other than exhibits to  such documents, unless  such exhibits are  specifically
incorporated   by   reference   into  such   documents   that   this  Prospectus
incorporates).  Written  or  oral  requests  should  be  directed  to:  Investor
Relations,  Engelhard Corporation, 101 Wood Avenue, Iselin N.J. 08830, telephone
number (908) 205-6000.
 
                                       2
<PAGE>
                                  THE COMPANY
 
    Engelhard develops,  manufactures  and  markets  technology-based  specialty
chemical  products and  engineered materials for  a wide  spectrum of industrial
customers, and  provides services  to  precious and  base metals  customers  and
markets  energy-related services. The Company operates on a worldwide basis with
corporate and operating headquarters and principal manufacturing facilities  and
mineral  reserves in  the United States  with other operations  conducted in the
European Community, the Russian Federation and the Asia-Pacific region.
 
    The Company's businesses are organized into three segments -- Catalysts  and
Chemicals,  Pigments  and  Additives, and  Engineered  Materials  and Industrial
Commodities Management (formerly Precious Metals Management).
 
    The Catalysts  and  Chemicals  segment  comprises  three  principal  product
groups:  the Environmental Technologies Group, consisting of Automotive Emission
Systems, Heavy  Duty Power  Systems and  Process Emission  Systems, serving  the
automotive,  light  and  heavy  duty truck,  aircraft,  off-road  vehicle, power
generation and process  industries; the Petroleum  Catalysts Group, serving  the
petroleum  refining industries;  and the  Chemical Catalysts  Group, serving the
chemical,  petrochemical,   pharmaceutical  and   food  processing   industries.
Environmental  technology  catalysts  are  used  in  applications  such  as  the
abatement of carbon monoxide, oxides of nitrogen and hydrocarbons from gasoline,
diesel and  alternate fueled  vehicle  exhaust gases  to meet  emission  control
standards.  These catalysts are  also used for  the removal of  odors, fumes and
pollutants generated  by  a variety  of  process industries  including  but  not
limited to the painting of automobiles, appliances and other equipment; printing
processes;  the manufacture of nitric acid and tires, in the curing of polymers;
and power generation sources. The  petroleum refining catalyst products  consist
of a variety of catalysts and processes used in the petroleum refining industry.
The  principal products are  zeolitic fluid cracking  catalysts which are widely
used to  provide  economies  in petroleum  processing.  The  chemical  catalysts
products  consist of catalysts and sorbents used  in the production of a variety
of  products   or  intermediates,   including  synthetic   fibers,   fragrances,
antibiotics,  vitamins,  polymers, plastics,  detergents,  fuels and  lube oils,
solvents, oleochemicals and edible products.
 
    The Pigments and Additives segment  comprises two principal product  groups:
the  Paper  Pigments and  Chemicals Group,  serving the  paper industry  and the
Specialty Minerals and Colors Group,  serving the plastics, coatings, paint  and
allied  industries. Paper pigments  and chemicals products  consist primarily of
coating and  extender  pigments.  Specialty minerals  and  colors  kaolin  based
products  are used as  pigments and extenders  for a variety  of purposes in the
manufacture of plastic, rubber, ink, ceramic, adhesive products and in paint.
 
    The Engineered  Materials  and  Industrial  Commodities  Management  segment
includes  the Engineered Materials Group, serving a broad spectrum of industries
and the  Industrial  Commodities  Management Group,  which  is  responsible  for
precious  and base  metals sourcing and  dealing, for managing  the precious and
base metals  requirements  of the  Company  and  its customers,  and  for  power
marketing.  The products of the Engineered  Materials Group consist primarily of
metal-based materials  such  as  temperature-sensing  devices,  precious  metals
coating  and electroplating materials, conductive pastes and powders and brazing
alloys. In June  1995, the Company  formed a  50/50 joint venture  with CLAL,  a
Paris-based  precious metal fabricator.  The joint venture  combined most of the
assets  of  the  Engineered  Materials   business  with  CLAL.  The   Industrial
Commodities  Management  Group is  responsible for  procuring precious  and base
metals to meet the requirements of  the Company's operations and its  customers.
The  Industrial Commodities Management  Group also engages  in precious and base
metals dealing  operations with  industrial consumers,  dealers, central  banks,
miners  and refiners.  It also participates  in refining of  precious metals and
marketing of energy-related services.
 
    Engelhard was organized under the laws of the State of Delaware in 1938. The
Company's address  is  101  Wood  Avenue, Iselin,  New  Jersey  08830,  and  its
telephone number is (908) 205-6000.
 
                                       3
<PAGE>
Unless  otherwise indicated or the context otherwise requires, all references to
"Engelhard" or  the "Company"  herein  shall be  deemed  to refer  to  Engelhard
Corporation and its consolidated subsidiaries.
 
                                USE OF PROCEEDS
 
    Except as otherwise described in the accompanying Prospectus Supplement, the
net  proceeds from the sale  of the Debt Securities will  be used by the Company
for general corporate purposes, which  may include the reduction of  outstanding
indebtedness, working capital increases, capital expenditures and acquisitions.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
    The  following table sets forth  the ratio of earnings  to fixed charges for
the Company for the periods indicated. In the calculation of the Company's ratio
of earnings  to fixed  charges,  "earnings" consist  of income  from  continuing
operations   before  income  taxes  and  fixed  charges  (excluding  capitalized
interest) and  "fixed  charges"  consist  of  interest  expense,  including  the
interest  portion of  rental obligations  deemed representative  of the interest
factor.
 
<TABLE>
<CAPTION>
 THREE MONTHS ENDED                    YEAR ENDED DECEMBER 31,
- ---------------------  -------------------------------------------------------
   MARCH 31, 1996        1995       1994        1993        1992       1991
- ---------------------  ---------  ---------     -----     ---------  ---------
<S>                    <C>        <C>        <C>          <C>        <C>
           5.28             6.05       6.79          (a)       7.26       5.45
</TABLE>
 
(a) For fiscal  1993,  earnings were  insufficient  to cover  fixed  charges  by
    approximately  $8.3 million. Earnings in 1993  were negatively impacted by a
    charge of approximately $148 million  for the realignment and  consolidation
    of  businesses and environmental matters. Without  such charge, the ratio of
    earnings to fixed charges for fiscal 1993 would have been 7.14.
 
                           DESCRIPTION OF SECURITIES
 
    Senior Debt Securities may be issued from time to time in one or more series
under an indenture (the "Senior Indenture"),  between the Company and The  Chase
Manhattan Bank (the "Senior Trustee"). The Senior Indenture has been filed as an
exhibit  to  the Registration  Statement  of which  this  Prospectus is  a part.
Subordinated Debt Securities  may be issued  from time  to time in  one or  more
series under an indenture (the "Subordinated Indenture") between the Company and
a  trustee  to  be  identified  in  the  applicable  Prospectus  Supplement (the
"Subordinated Trustee"). The Subordinated Indenture has been filed as an exhibit
to the Registration  Statement of which  this Prospectus is  a part. The  Senior
Indenture  and the Subordinated Indenture are sometimes referred to collectively
as the "Indentures,"  and the Senior  Trustee and the  Subordinated Trustee  are
sometimes  referred to collectively as the "Trustees." The statements under this
caption are brief summaries of  certain provisions contained in the  Indentures,
do  not purport to be complete and  are qualified in their entirety by reference
to the Indentures, including the definitions therein of certain terms, copies of
which are included or incorporated by reference as exhibits to the  Registration
Statement  of which this Prospectus is a part. Capitalized terms used herein and
not defined shall have the meanings assigned to them in the relevant  Indenture.
The particular terms of the Debt Securities and any variations from such general
provisions  applicable to any series of Debt Securities will be set forth in the
Prospectus Supplement with respect to such series.
 
GENERAL
 
    Each Indenture provides for the issuance  of Debt Securities in one or  more
series  with the same  or various maturities at  par or at  a discount. Any Debt
Securities bearing  no interest  or interest  at a  rate which  at the  time  of
issuance  is  below  market rates  will  be sold  at  a discount  (which  may be
substantial) from their stated principal amount. Federal income tax consequences
and  other  special  considerations  applicable  to  any  such  discounted  Debt
Securities  ("Discounted  Securities")  will  be  described  in  the  Prospectus
Supplement  relating   thereto.  Neither   Indenture   limits  the   amount   of
 
                                       4
<PAGE>
Debt  Securities  that  can  be  issued thereunder.  Reference  is  made  to the
Prospectus Supplement  for  the following  terms,  if applicable,  of  the  Debt
Securities  offered thereby:  (1) the  designation, aggregate  principal amount,
currency or composite currency  and denominations; (2) the  price at which  such
Debt  Securities will be issued; (3) any index, formula or other method used for
determining amounts of principal or interest payable on the Debt Securities; (4)
the maturity date and other dates, if  any, on which principal will be  payable;
(5) the interest rate or rates (which may be fixed or variable), if any, and the
date  or dates  from which interest  will accrue  and on which  interest will be
payable, and the record  dates for the  payment of interest;  (6) the manner  of
paying  principal  or interest;  (7)  the place  or  places where  principal and
interest will be payable; (8) the terms of any mandatory or optional  redemption
by  the Company; (9) the  terms of any repayment at  the option of holders; (10)
whether such Debt Securities are to  be issuable as registered Debt  Securities,
bearer Debt Securities, or both, and whether and upon what terms registered Debt
Securities  may be  exchanged for  bearer Debt  Securities and  vice versa; (11)
whether such Debt Securities are to be represented in whole or in part by a Debt
Security  in  global  form   and,  if  so,  the   identity  of  the   depositary
("Depositary")  for any global Debt Security; (12) any tax indemnity provisions;
(13) if the Debt Securities provide  that payments of principal or interest  may
be  made in a currency other than that in which Debt Securities are denominated,
the manner for determining such payments; (14) the portion of principal  payable
upon  acceleration of  a Discounted Security;  (15) whether and  upon what terms
Debt Securities  may be  defeased; (16)  any events  of default  or  restrictive
covenants  in  addition to  or  in lieu  of those  set  forth in  the applicable
Indenture; (17) provisions  for electronic  issuance of Debt  Securities or  for
Debt  Securities in uncertificated form; (18) the  terms, if any, upon which the
Debt Securities will be convertible into or exchangeable for Common Stock of the
Company; and (19) any additional provisions or other terms not inconsistent with
the provisions of  the applicable  Indenture, including  any terms  that may  be
required   or  advisable  under  United  States  or  other  applicable  laws  or
regulations  or  advisable  in  connection  with  the  marketing  of  the   Debt
Securities.
 
RANKING OF DEBT SECURITIES
 
    The  Senior  Debt Securities  will be  unsecured and  will rank  equally and
ratably with  other  unsecured  and  unsubordinated debt  of  the  Company.  The
Subordinated  Debt Securities  will be  subordinate in  right of  payment to all
Senior Indebtedness  of the  Company. "Senior  Indebtedness" of  the Company  is
defined  to mean the principal of (and premium,  if any) and interest on (a) any
and all indebtedness and obligations  of the Company (including indebtedness  of
others  guaranteed  by  the  Company), whether  or  not  contingent  and whether
outstanding on the  date of  the Subordinated Indenture  or thereafter  created,
incurred or assumed, which (i) are for money borrowed; (ii) are evidenced by any
bond,  note, debenture or similar instrument; (iii) represent the unpaid balance
on the purchase price of any property, business, or asset of any kind; (iv)  are
obligations  of the  Company as  lessee under  any and  all leases  of property,
equipment or other assets required to be capitalized on the balance sheet of the
lessee under  generally accepted  accounting principles;  (v) are  reimbursement
obligations  of  the Company  with respect  to  letters of  credit; and  (b) any
deferrals, amendments, renewals, extensions, modifications and refundings of any
indebtedness or obligations of the types referred to above; provided that Senior
Indebtedness shall  not  include  (i) Subordinated  Debt  Securities;  (ii)  any
indebtedness  or obligation of  the Company which,  by its express  terms or the
express terms of the  instrument creating or evidencing  it, is not superior  in
right  of payment to the Subordinated Debt Securities; or (iii) any indebtedness
or obligation incurred by the Company in connection with the purchase of assets,
materials or services in the ordinary course of business and which constitutes a
trade payable. The Subordinated Indenture does not contain any limitation on the
amount of Senior Indebtedness which may be hereafter incurred by the Company. In
the event of any default in the payment of the principal of, or interest on, any
Senior Indebtedness in an aggregate principal amount of at least $50,000,000  or
any  default permitting the acceleration of  Senior Indebtedness in an aggregate
amount of at least $50,000,000  where notice of such  default has been given  to
the  Company, no  payment with respect  to the  principal of or  interest on the
Subordinated Debt Securities will be made  by the Company unless and until  such
default  has  been cured  or waived.  Upon  any payment  or distribution  of the
Company's  assets   to  creditors   of   the  Company   in  a   liquidation   or
 
                                       5
<PAGE>
dissolution  of  the Company,  or in  a reorganization,  bankruptcy, insolvency,
receivership or  similar proceeding  relating to  the Company  or its  property,
whether  voluntary or involuntary, the holders of Senior Indebtedness will first
be entitled to receive  payment in full  of all amounts  due thereon before  the
holders  of the  Subordinated Debt  Securities will  be entitled  to receive any
payment  upon  the  principal  of  or  premium,  if  any,  or  interest  on  the
Subordinated  Debt Securities. By reason of  such subordination, in the event of
insolvency of the  Company, holders of  Senior Indebtedness of  the Company  may
receive  more,  ratably, and  holders of  the  Subordinated Debt  Securities may
receive  less,  ratably,  than  the   other  creditors  of  the  Company.   Such
subordination will not prevent the occurrence of any Event of Default in respect
of the Subordinated Debt Securities.
 
COVENANTS
 
    The Senior Indenture contains, among others, the covenants summarized below,
which will be applicable (unless waived or amended) so long as any of the Senior
Debt  Securities  are outstanding,  unless  stated otherwise  in  the Prospectus
Supplement.
 
    LIMITATIONS ON LIENS AND ENCUMBRANCES.   The Company covenants that it  will
not  nor will  it permit  any Subsidiary,  directly or  indirectly, to  incur or
create any Lien on any property, assets or stock now owned or hereafter acquired
by the Company or any of  its Subsidiaries without equally and ratably  securing
all  series of  Senior Debt  Securities then  outstanding with  the indebtedness
secured by such Lien, other than: (a) Liens for taxes or assessments and similar
charges either  (i) not  delinquent or  (ii) being  contested in  good faith  by
appropriate  proceedings and as to which the  Company or such Subsidiary, as the
case may be,  shall have set  aside on  its books adequate  reserves; (b)  Liens
incurred or pledges and deposits made in connection with workmen's compensation,
unemployment  insurance,  old-age  pensions  and  social  security  benefits  or
securing the performance  of bids,  tenders, leases, contracts  (other than  for
obligations  incurred in connection with the borrowing of money or the obtaining
of advances or credit), and statutory obligations of like nature, incurred as an
incident  to  and  in  the  ordinary  course  of  business;  (c)  materialmen's,
mechanics',  repairmen's,  employees',  operators'  or  other  similar  Liens or
charges arising in the ordinary  course of business incidental to  construction,
maintenance  or operation of any property of the Company or any Subsidiary which
have not at the time been filed pursuant  to law and any such Liens and  charges
incidental  to construction,  maintenance or  operation of  any property  of the
Company or any Subsidiary, which, although filed, relate to obligations not  yet
due  or  the payment  of  which is  being  withheld as  provided  by law,  or to
obligations  the  validity  of  which  is  being  contested  in  good  faith  by
appropriate   proceedings;   (d)  zoning   restrictions,   easements,  licenses,
reservations, provisions, covenants,  conditions, waivers,  restrictions on  the
use  of property or minor irregularities of title (and with respect to leasehold
interests,  mortgages,  obligations,  Liens  and  other  encumbrances  incurred,
created,  assumed or  permitted to  exist and  arising by,  through or  under or
asserted by a landlord or owner of the leased property, with or without  consent
of  the  lessee), which  will  not individually  or  in the  aggregate interfere
materially with the use  or operation by  the Company or  any Subsidiary of  the
property  affected thereby for the purposes for which such property was acquired
or is held by the Company or  any Subsidiary; (e) Liens created by or  resulting
from  any litigation  or proceeding  which is being  contested in  good faith by
appropriate proceedings and as to which levy and execution have been stayed  and
continue  to be stayed; (f) Liens  consisting of repurchase agreements, swaps or
other obligations entered into  in the ordinary course  of business relating  to
precious  metals purchased,  borrowed or  otherwise held  by the  Company or any
Subsidiary; (g) Liens incidental to the conduct of its business or the ownership
of its  property and  assets which  were  not incurred  in connection  with  the
borrowing  of money or the  obtaining of advances or credit  and which do not in
the aggregate  materially detract  from  the value  of  the property  or  assets
subject  thereto or materially  impair the use  thereof in the  operation of its
business; (h) Liens on property or assets of a Subsidiary to secure  obligations
of  such Subsidiary to the  Company or another Subsidiary;  (i) Liens arising in
connection with letter of credit  trade transactions, provided that the  Company
or  its Subsidiary, as the case may be, discharges within 60 days its obligation
to pay the indebtedness to banks arising from payments made by such banks  under
such  letters of credit; and (j) other Liens, provided that the aggregate of all
 
                                       6
<PAGE>
properties and assets of the Company  and the Subsidiaries which are subject  to
or  affected by such Liens and which would properly be classified as assets on a
consolidated balance  sheet  prepared  in  accordance  with  generally  accepted
accounting  principles  as  in  effect  on  the  date  of  the  Senior Indenture
(including all leases (other than leases of office space and leases of  research
and  development facilities, if any)  that would be required  to be reflected as
capital leases pursuant to such principles) does not at any time have a value on
the books  of  the  Company  and  its Subsidiaries  in  excess  of  25%  of  the
Consolidated  Tangible Net Worth of the  Company and its Subsidiaries calculated
for the quarter most recently ended.
 
    LIMITATIONS ON SALE AND LEASEBACK TRANSACTIONS.  The Company covenants  that
it  will not,  and will  not permit any  Significant Subsidiary  to, directly or
indirectly, sell  or  transfer (other  than  to  the Company  or  a  Significant
Subsidiary)  any Principal Property  with the intention that  the Company or any
Significant Subsidiary take back a  lease thereof which (i)  has a term of  more
than  three years  or (ii)  is renewable at  the option  of the  Company or such
Significant Subsidiary for  an aggregate period  or periods of  more than  three
years  from the  date of  commencement thereof  unless (a)  the Company promptly
gives notice  thereof  to the  Senior  Trustee,  and either  (b)  the  Principal
Property  owned by the Company or  a Significant Subsidiary immediately prior to
such sale could  have been subjected  to a Lien  to secure indebtedness  without
being  required to equally and ratably secure Senior Debt Securities pursuant to
the limitations described under "Limitations  on Liens and Encumbrances" or  (c)
the net proceeds of such sale are applied within 270 days either before or after
the effective date of any such transaction (i) to the retirement of indebtedness
of  the Company or  any Subsidiary (other  than securities of  any series at the
time outstanding) or  (ii) to the  redemption of Senior  Debt Securities of  any
series at the time outstanding, if permissible under the Indenture and the terms
of  Securities of  such series,  at a  redemption price  equal to  the principal
amount thereof plus the then applicable  premium, if any, together with  accrued
interest,  if any,  or (iii)  to the purchase  of property,  securities or other
assets having a value at  least equal to the net  proceeds of such sale, or  (d)
the  Company shall  deliver to the  Senior Trustee for  cancellation Senior Debt
Securities of  any series  at the  time outstanding  in an  aggregate  principal
amount at least equal to the net proceeds of such sale (less any amounts applied
in accordance with clause (c)).
 
    CERTAIN  DEFINITIONS.  The term "Consolidated  Tangible Net Worth" means the
excess of (i) the consolidated net book  value of the assets of the Company  and
its  Subsidiaries (other than  patents, patent rights,  trademarks, trade names,
franchises, copyrights, licenses, permits, goodwill and other intangible  assets
classified  as such in accordance  with generally accepted accounting principles
as in  effect  on  the date  of  the  Senior Indenture)  after  all  appropriate
deductions  in accordance  with generally  accepted accounting  principles as in
effect on  the date  of  the Senior  Indenture (including,  without  limitation,
reserves  for doubtful receivables, obsolescence, depreciation and amortization)
plus the  amount,  if  any,  by  which  the  market  value  of  precious  metals
inventories  and investments exceeds  the carrying value of  those metals on the
consolidated books  of  account  of  the  Company  over  (ii)  the  consolidated
liabilities   (including  tax  and  other  proper  accruals  but  excluding  the
accumulated postretirement benefit obligation resulting from the application  of
the provisions of FAS No. 106 "Employers' Accounting for Postretirement Benefits
Other Than Pensions") of the Company and its Subsidiaries, in each case computed
and  consolidated in accordance with generally accepted accounting principles as
in effect  on the  date  of the  Senior Indenture.  The  term "Lien"  means  any
mortgage,  pledge, security  interest, encumbrance, lien  or charge  of any kind
whatsoever (including any conditional sale  or other title retention  agreement,
any  lease in  the nature thereof,  and the filing  of or agreement  to give any
financing statement under the Uniform Commercial Code of any jurisdiction),  but
in  no event shall  "Lien" include any  defeasance pursuant to  Article 8 of the
Senior Indenture. The term "Principal Property" means, with certain  exceptions,
any  manufacturing  plant or  warehouse owned  at the  date hereof  or hereafter
acquired by the Company  or any Significant Subsidiary  which is located  within
the  United States and  the gross book  value of which  (before deduction of any
applicable  depreciation  reserves)  is  in  excess  of  5%  of  the   Company's
Consolidated Tangible Net Worth. The term
 
                                       7
<PAGE>
"Significant  Subsidiary"  shall  have  the meaning  assigned  to  such  term in
Regulation S-X promulgated  under the Securities  Act of 1933,  as amended.  The
term "Subsidiary" means any corporation, association or other business entity, a
majority  (by number of votes) of the voting stock or control of which is at the
time owned or controlled by the Company or another Subsidiary of the Company.
 
GLOBAL SECURITIES
 
    The Debt Securities of  a series may be  issued in whole or  in part in  the
form  of  one  or more  global  securities  ("Global Securities")  that  will be
deposited with, or  on behalf of,  the Depositary identified  in the  Prospectus
Supplement  relating  to  such  series.  Global  Securities  will  be  issued in
registered form and in either temporary  or permanent form. Unless and until  it
is exchanged in whole or in part for Debt Securities in permanent form, a Global
Security  may not be  transferred except as  a whole by  the Depositary for such
Global Security  to  a nominee  of  such Depositary  or  by a  nominee  of  such
Depositary  to such Depositary or another nominee  of such Depositary or by such
Depositary or any such nominee to a successor of such Depositary or a nominee of
such successor.
 
    The specific  terms  of the  depositary  arrangement with  respect  to  Debt
Securities  of a series will be  described in the Prospectus Supplement relating
to such series. The Company anticipates that the following provisions will apply
to all depositary arrangements.
 
    Upon the  issuance of  a Global  Security, the  Depositary for  such  Global
Security  will credit, on  its book-entry registration  and transfer system, the
respective principal amounts of the  Debt Securities represented by such  Global
Security to the accounts of institutions that have accounts with such Depositary
("Participants").  The  accounts  to  be credited  shall  be  designated  by the
underwriters of such Debt Securities, by certain agents of the Company or by the
Company, if such Debt Securities are  offered and sold directly by the  Company.
Ownership  of  beneficial interests  in  a Global  Security  will be  limited to
Participants or persons that may hold interests through Participants.  Ownership
of  beneficial  interests in  such Global  Security  will be  shown on,  and the
transfer of that ownership will be effected only through, records maintained  by
the  Depositary with respect to Participants'  beneficial interests. The laws of
some states require that certain purchasers of securities take physical delivery
of such securities in definitive form.  Such ownership limits and such laws  may
impair the ability to transfer beneficial interests in a Global Security.
 
    So  long as  the Depositary for  a Global  Security, or its  nominee, is the
holder of such Global Security, such Depositary or such nominee, as the case may
be, will  be  considered  the  sole  owner or  holder  of  the  Debt  Securities
represented  by  such  Global  Security for  all  purposes  under  the Indenture
governing such Debt Securities. Except as set forth below, owners of  beneficial
interests  in a Global Security will not  be entitled to have Debt Securities of
the series represented by such Global  Security registered in their names,  will
not  receive or be entitled  to receive physical delivery  of Debt Securities of
such series in definitive form and will not be considered the owners or  holders
thereof under the Indenture governing such Debt Securities.
 
    Principal,  premium,  if  any,  and  interest  payments  on  Debt Securities
registered in the name of or held by a Depositary or its nominee will be made to
the Depositary or its nominee, as the  case may be, as the registered holder  of
the  Global Security representing such Debt Securities. The Company expects that
the Depositary for Debt Securities of a  series, upon receipt of any payment  of
principal,  premium, if any, or  interest in respect of  a Global Security, will
immediately credit Participants' accounts with payments in amounts proportionate
to their respective beneficial interest in  the principal amount of such  Global
Security  as shown on the  records of such Depositary.  The Company also expects
that payments by Participants to owners  of beneficial interests in such  Global
Security   held  through  such   Participants  will  be   governed  by  standing
instructions and customary practices,  as is now the  case with securities  held
for the accounts of customers in bearer form or registered in "street name," and
will  be  the responsibility  of  such Participants.  None  of the  Company, the
Trustee for such
 
                                       8
<PAGE>
Debt Securities or any  paying agent or any  registrar for such Debt  Securities
will have any responsibility or liability for any aspect of the records relating
to  or payments  made on  account of beneficial  ownership interest  in a Global
Security for such Debt Securities  or for maintaining, supervising or  reviewing
any records relating to such beneficial ownership interests.
 
    If  a Depositary for Debt Securities of a series is at any time unwilling or
unable to continue as a Depositary  and a successor Depositary is not  appointed
by  the Company within 90  days, the Company will  issue Debt Securities of such
series in definitive form in exchange for the Global Security or Debt Securities
representing the  Debt Securities  of such  series represented  by one  or  more
Global Securities.
 
INTEREST AND FOREIGN CURRENCY
 
    Principal,  premium,  if any,  and interest  will be  payable, and  the Debt
Securities will  be transferable,  in  the manner  described in  the  Prospectus
Supplement relating to such Debt Securities. If the principal of, or premium, if
any, or any interest on, any of the Debt Securities is payable in any foreign or
composite  currency,  the  restrictions, elections,  tax  consequences, specific
terms and  other information  with  respect to  such  Debt Securities  and  such
foreign  or composite  currency will be  specified in  the applicable Prospectus
Supplement.
 
CONSOLIDATION, MERGER, SALE OR CONVEYANCE
 
    The Indentures provide that  the Company may not  consolidate with or  merge
into  any other person or transfer all or substantially all of its assets to any
person, unless (i) the person is organized  under the laws of the United  States
or  a  State thereof,  (ii)  the person  assumes  by supplemental  indenture all
obligations  of  the  Company  under  the  applicable  Indenture  and  the  Debt
Securities  and any coupons issued under such Indenture; (iii) immediately after
giving effect to  such transaction,  no Event of  Default, and  no event  which,
after  notice or passage of  time would become an  Event of Default, exists; and
(iv) if, as  a result of  any such transaction,  any property or  assets of  the
Company  would become subject to a  mortgage, pledge, lien, security interest or
other encumbrance which would not be permitted by the Senior Indenture, then the
Company or such person, as the case  may be, secures the Senior Debt  Securities
equally  and ratably with or prior to  all obligations secured by such Lien. The
successor shall be substituted for the Company and thereafter all obligations of
the Company under the applicable Indenture and the Debt Securities issued  under
such Indenture shall terminate.
 
EVENTS OF DEFAULT
 
    The  following  shall  constitute Events  of  Default with  respect  to Debt
Securities of any series: (i) default for a period of 30 days in payment of  any
interest on the Debt Securities of that series when due; (ii) default in payment
of principal of (or premium, if any, on) the Debt Securities of that series when
due  (whether at maturity, upon redemption or  otherwise or in the making of any
required sinking  fund  payment); (iii)  default  in performance  of  any  other
covenant, condition or agreement in the Debt Securities of that series or in the
applicable  Indenture continued for 60 days  after written notice as provided in
the Indenture;  (iv)  a  default  under any  instrument  or  other  evidence  of
indebtedness for money borrowed by the Company (including a default with respect
to Debt Securities of any series other than that series) or under any instrument
(including the applicable Indenture) under which there may be issued or by which
there  may be evidenced  or secured any  indebtedness for money  borrowed by the
Company, which default  shall involve  an amount  in excess  of $50,000,000  and
shall  constitute a failure to pay such  indebtedness when due and payable after
the expiration of any grace period  and shall have resulted in the  acceleration
of  such indebtedness,  if such accelerated  indebtedness is  not discharged, or
such acceleration  is not  annulled,  within 30  days  after written  notice  as
provided  in the Indenture; and (v)  certain events of bankruptcy, insolvency or
reorganization.
 
    If an Event of Default with respect to Debt Securities of any series at  the
time outstanding shall occur and be continuing, the Trustee or the holders of at
least  25% in principal amount of the outstanding Debt Securities of that series
may declare the principal and accrued interest of all of the Debt Securities  of
that series to be due and payable immediately.
 
                                       9
<PAGE>
    Each  Indenture provides  that the  Trustee will,  within 90  days after the
occurrence of a default, give  to holders of the  Debt Securities of the  series
with  respect to  which a  default has occurred  notice of  all uncured defaults
known to it; but, except in the case of a default in the payment of principal or
interest on Debt Securities  of that series, the  Trustee shall be protected  in
withholding  such notice if it in good  faith determines that the withholding of
such notice is in the interest of the holders.
 
    Each Indenture contains a  provision entitling the  Trustee, subject to  the
duty  of the Trustee during a default to act with the required standard of care,
to be indemnified by the holders of  Debt Securities of the series with  respect
to which a default has occurred before proceeding to exercise any right or power
under  such Indenture at the  request of such holders.  Subject to such right of
indemnification, each  Indenture provides  that  the holders  of a  majority  in
principal  amount of the outstanding Debt Securities  of a series may direct the
time, method and place of conducting any proceeding for any remedy available  to
the  Trustee or exercising  any trust or  power conferred upon  the Trustee with
respect to such series.
 
    The Company will be required to furnish to the Trustee annually a  statement
as  to  the fulfillment  by  the Company  of all  of  its obligations  under the
applicable Indenture.
 
MODIFICATION OF INDENTURES
 
    Unless the resolution establishing the terms of a series otherwise provides,
the applicable Indenture and  the Debt Securities of  any series may be  amended
and any default may be waived as follows: the Debt Securities and the applicable
Indenture  may be amended with the consent of holders of a majority in principal
amount of the  Debt Securities of  all series  affected voting as  one class.  A
default  with respect to the Debt Securities of  a series may be waived with the
consent of the holders of a majority in principal amount of the Debt  Securities
of  such  series.  However, without  the  consent  of each  holder  affected, no
amendment or waiver may (1) reduce  the amount of Debt Securities whose  holders
must consent to an amendment or waiver, (2) reduce the interest on or change the
time for payment of interest on any Debt Security, (3) change the fixed maturity
of any Debt Security, (4) reduce the principal of any non-Discounted Security or
reduce  the amount of principal of any  Discounted Security that would be due on
acceleration thereof, (5) change the currency in which principal or interest  on
a  Debt Security is payable, (6) waive any  default in payment of interest on or
principal of a Debt Security or (7) change certain provisions of the  applicable
Indenture  regarding waiver of past defaults  and amendments with the consent of
holders other than to increase the principal amount of Debt Securities  required
to  consent. Without the consent of any  holder, the applicable Indenture or the
Debt Securities  may be  amended  to cure  any  ambiguity, omission,  defect  or
inconsistency;  to provide for the assumption  of Company obligations to holders
in the event of a merger or consolidation requiring such assumption; to  provide
that  specific provisions in the  applicable Indenture not apply  to a series of
Debt Securities not  previously issued;  to create  a series  and establish  its
terms;  to provide for a separate Trustee for one or more series; or to make any
change that does not materially adversely affect the rights of any holder.
 
DEFEASANCE
 
    Debt Securities of a series may  be defeased in accordance with their  terms
and,  unless  the  resolution establishing  the  terms of  the  series otherwise
provides, as set  forth below. The  Company at any  time may terminate  as to  a
series  all of its  obligations (except for certain  obligations with respect to
the defeasance trust, bearer securities, securityholder lists, compensation  and
indemnity  and  replacement  of  the Trustee  and  obligations  to  register the
transfer or exchange of  a Debt Security, to  replace destroyed, lost or  stolen
Debt Securities and to maintain agencies in respect of the Debt Securities) with
respect  to the Debt Securities of a series and the applicable Indenture ("legal
defeasance"). The Company at any time may terminate its obligations with respect
to the  Debt  Securities  of  a  series  under  the  covenants  described  under
"Covenants" ("covenant defeasance").
 
    The  Company may  exercise its  legal defeasance  option notwithstanding its
prior exercise of its covenant defeasance  option. If the Company exercises  its
legal defeasance option, the Debt Securities
 
                                       10
<PAGE>
of  a series  may not  be accelerated  because of  an Event  of Default.  If the
Company exercises  its covenant  defeasance  option, the  Debt Securities  of  a
series  may not be accelerated  as a result of  noncompliance with the covenants
described under "Covenants."
 
    To exercise either option as to the Debt Securities of a series, the Company
must irrevocably  deposit  in  the  trust  (the  "defeasance  trust")  with  the
applicable  Trustee  money or  U.S. Government  Obligations  for the  payment of
principal, premium, if any, and interest on the Debt Securities of the series to
redemption or  maturity  and  must  comply with  certain  other  conditions.  In
particular,  if  the defeasance  occurs  more than  twelve  months prior  to the
earlier of the maturity  or the date  fixed for redemption of  the series to  be
defeased,  the Company must obtain an opinion of tax counsel that the defeasance
will not result in recognition  for Federal income tax  purposes of any gain  or
loss  to  holders  of  the  Debt  Securities  of  the  series.  "U.S. Government
Obligations" are direct obligations of the  United States of America which  have
the  full faith and credit  of the United States  of America pledged for payment
and which are not callable at the issuer's option, or certificates  representing
an ownership interest in such obligations.
 
CONVERSION RIGHTS OF DEBT SECURITIES
 
    If  so indicated in  the applicable Prospectus Supplement  with respect to a
particular series of Debt Securities, holders of such series of Debt  Securities
will  be entitled,  at any time  prior to the  date set forth  in the Prospectus
Supplement relating to such series, subject to prior redemption, to convert such
Debt Securities  or portions  thereof (which  are $1,000  or integral  multiples
thereof)  into or for Common Stock of the Company, at the conversion rate stated
in the Prospectus Supplement, subject to adjustment as described below or in the
applicable Prospectus Supplement.  The right to  convert Debt Securities  called
for  redemption will terminate at the close  of business on the redemption date,
and will be lost if not exercised prior to that time unless the Company defaults
in making the payments due upon redemption.
 
    To convert a Debt Security, a holder must (i) complete and manually sign the
conversion notice (the "Conversion Notice") on the back of the Debt Security (or
complete and manually sign a facsimile  thereof) and deliver such notice to  the
Conversion Agent or any other office or agency maintained for such purpose, (ii)
surrender  the Debt Security to the Conversion  Agent or at such other office or
agency by physical delivery, (iii) if required, furnish appropriate endorsements
and transfer documents, and (iv) if required, pay all transfer or similar taxes.
The date by which  such notice shall  have been received  and the Debt  Security
shall  have been so surrendered to the  Conversion Agent is the Conversion Date.
Such Conversion Notice shall be irrevocable and may not be withdrawn by a holder
for any reason.
 
    Unless otherwise  provided  in  the applicable  Prospectus  Supplement,  the
conversion  rate is subject to adjustment upon the occurrence of certain events,
including the issuance  of Common  Stock as a  dividend or  distribution on  the
Common Stock; subdivisions, combinations and certain reclassifications of Common
Stock;  the issuance to all holders of  Common Stock of shares or certain rights
or warrants  to subscribe  for shares  of Common  Stock at  less than  the  then
current  market price per share;  and the distribution to  all holders of Common
Stock of any assets (other than cash dividends paid out of retained earnings) or
debt securities or any rights or warrants to purchase assets or debt securities.
The Company may also  increase the conversion rate  at any time, temporarily  or
otherwise,  by any amount so  long as the conversion  rate does not cause Common
Stock to be issued at less than its par value.
 
    No adjustment in the conversion rate will be required unless such adjustment
would require a change  of at least  1% of the conversion  rate then in  effect;
provided,  however, that any  adjustment that would otherwise  be required to be
made shall  be  carried  forward  and  taken  into  account  in  any  subsequent
adjustment.
 
    If any Debt Security is converted between the record date for the payment of
interest  and the next succeeding interest payment date, such Debt Security must
be accompanied by funds  equal to the interest  payable on such next  succeeding
interest    payment    date    on   the    principal    amount    so   converted
 
                                       11
<PAGE>
(unless such Debt  Security shall have  been called for  redemption during  such
period,  in which case no  such payment shall be  required), and the interest on
the principal amount of the Debt Security  being converted will be paid on  such
next  succeeding interest  payment date  to the  registered holder  of such Debt
Security on the immediately preceding record date. A Debt Security converted  on
an  interest  payment date  need  not be  accompanied  by any  payment,  and the
interest on the principal  amount of the Debt  Security being converted will  be
paid  on  such interest  payment  date to  the  registered holder  of  such Debt
Security on the immediately preceding record date, except as otherwise  provided
above.  Subject  to the  aforesaid  right of  the  registered holder  to receive
interest, no  payment or  adjustment will  be made  on conversion  for  interest
accrued  on the  converted Debt  Security or for  dividends on  the Common Stock
issued on conversion.
 
GOVERNING LAW
    The Indentures and the Debt Securities will be governed by, and construed in
accordance with, the laws of the State of New York.
 
                          DESCRIPTION OF CAPITAL STOCK
 
GENERAL
    The Company is authorized to issue  350,000,000 shares of Common Stock,  par
value  $1.00 per  share, and  5,000,000 shares  of Preferred  Stock, without par
value. All outstanding shares of Common Stock are fully paid and non-assessable.
As of June 30, 1996, there were 143,883,435 shares of Common Stock outstanding.
 
COMMON STOCK
    Subject to the rights of the holders of Preferred Stock, the holders of  the
Common Stock of the Company are entitled to receive dividends from funds legally
available  therefor when, as and if declared  by the Board of Directors, and are
entitled upon liquidation to  share ratably in all  assets of the Company  after
satisfaction in full of the prior rights of creditors of the Company and holders
of any Preferred Stock.
 
    The holders of the Common Stock are entitled to one vote for each share held
on all matters as to which shareholders are entitled to vote. The holders of the
Common  Stock  do  not  have  cumulative  voting  rights,  any  preferential  or
preemptive right  with  respect  to  any  securities  of  the  Company,  or  any
conversion   rights.  The  Common  Stock  is  not  subject  to  redemption.  The
outstanding shares of Common Stock are fully paid and non-assessable.
 
    The Common  Stock is  listed on  the following  stock exchanges:  New  York,
Chicago  (options), London, Zurich, Basel and Geneva. The transfer agent for the
Common Stock is Chemical Mellon Shareholder Services L.L.C.
 
PREFERRED STOCK
    The Company is authorized to issue 5,000,000 shares of Preferred Stock which
may be  issued from  time  to time  in  one or  more  series with  such  rights,
preferences  and  limitations  as  are  determined  by  the  Company's  Board of
Directors. Satisfaction  of any  dividend preferences  of outstanding  Preferred
Stock would reduce the amount of funds available for the payment of dividends on
Common  Stock. Also,  holders of Preferred  Stock would normally  be entitled to
receive a preference  payment before any  payment is made  to holders of  Common
Stock in the event of any liquidation, dissolution or winding-up of the Company.
As  of the date of  this Prospectus, no shares of  Preferred Stock are issued or
outstanding.
 
SUPERMAJORITY VOTING REQUIREMENTS AND CLASSIFIED BOARD OF DIRECTORS
    The Company's Restated Certificate of Incorporation provides that, in  order
to  approve a merger or consolidation with or  into, or a sale or other transfer
of all or  a portion of  the assets of  the Company other  than in the  ordinary
course  of business to, or the issuance  or transfer of voting securities of the
Company as  part of  an exchange  or  acquisition of  the securities  or  assets
(including  cash) of, any entity which is the  beneficial owner of 5% or more of
the outstanding  shares of  the Company  entitled  to vote  in the  election  of
Directors,  the affirmative vote of not less  than 80% of the outstanding shares
of
 
                                       12
<PAGE>
Common Stock (including at least 50%  of the outstanding shares of Common  Stock
held  by  stockholders other  than such  5% beneficial  owner) is  required. The
foregoing provision  would not  be applicable  if the  proposed transaction  was
approved  by a majority  of the Board of  Directors of the  Company who had been
duly elected  and acting  as members  of the  Board prior  to the  time such  5%
beneficial  owner became the beneficial  owner of 5% or  more of the outstanding
shares of Common Stock.
 
    The Company's  Restated Certificate  of Incorporation  also provides  for  a
classified  Board of Directors divided into  three classes. All classes shall be
as nearly equal in number as possible  and no class shall include less than  two
Directors,  with one class of Directors to be elected each year for a three-year
term.
 
    Neither provision  described  in the  foregoing  paragraphs can  be  amended
without  the affirmative vote of the holders  of at least 80% of the outstanding
shares of Common  Stock (including  at least 50%  of the  outstanding shares  of
Common Stock held by stockholders other than a 5% beneficial owner).
 
    The  Company  believes  that  the  classified  Board  and  such  80%  voting
requirements are  desirable to  assure  continuity in  Board membership  and  in
policy  formulated by the Board. Such provisions will serve to moderate the pace
of any change in control of the Company by extending the time required to  elect
a  majority of  the Directors and  will better  enable the Board  to protect the
interests of shareholders  in the event  that any person  or corporation  should
attempt to obtain control of the Company.
 
    It  is recognized, however, that the effect of such provisions is to make it
more difficult to change Directors even should this be desired by a majority  of
the Company's stockholders, and may be to render more difficult or to discourage
a merger, tender offer or proxy contest or the assumption of control by a holder
of a large block of Company securities.
 
    The   aforementioned  80%  voting  requirement  for  approval  of  specified
transactions with  5% beneficial  owners, absent  Board approval,  provides  the
Board  and minority stockholders with a  veto power over such transactions. Such
provision would  be beneficial  to  Company management  when confronted  with  a
hostile  tender offer and may deter such offers, thus depriving a stockholder of
the opportunity to dispose of his or her shares to a hostile tender offeror at a
price substantially in  excess of market  value. The deterrence  of such  offers
also has the effect of supporting existing management in its present position.
 
DIRECTORS' LIABILITY
    The  Company's Restated  Certificate of Incorporation,  as amended, provides
that, to  the fullest  extent permitted  by  Delaware law,  no Director  of  the
Company  will be liable to the Company  or its stockholders for monetary damages
for breach of fiduciary  duty as a  Director, except for  liability (i) for  any
breach  of the Director's  duty of loyalty  to the Company  or its shareholders,
(ii) for  acts or  omissions not  in  good faith  or which  involve  intentional
misconduct  or a knowing violation of law,  (iii) in respect of certain unlawful
dividend  payments  or  stock  redemptions  or  repurchases,  or  (iv)  for  any
transaction  from which the  Director derived an  improper personal benefit. The
effect of such provisions in the  Restated Certificate of Incorporation will  be
to  eliminate the rights of the  Company and its stockholders (including through
stockholders' derivative suits  on behalf  of the Company)  to recover  monetary
damages against a Director for breach of fiduciary duty as a Director (including
breaches  resulting from negligent or grossly  negligent behavior) except in the
situations described in clauses (i) through (iv) above.
 
                              PLAN OF DISTRIBUTION
 
    The Company  may  sell  the  Debt Securities  (i)  through  underwriters  or
dealers;  (ii) through agents;  (iii) directly to purchasers;  or (iv) through a
combination of any such methods of  sale. Any such underwriter, dealer or  agent
may  be deemed to be an underwriter within  the meaning of the Securities Act of
1933, as amended.  The Prospectus Supplement  relating to any  offering of  Debt
Securities  will set forth their offering terms,  including the name or names of
any underwriters, the purchase price of the Debt Securities and the proceeds  to
the Company from such sale, any underwriting discounts,
 
                                       13
<PAGE>
commissions and other items constituting underwriters' compensation, any initial
public  offering price,  and any  underwriting discounts,  commissions and other
items allowed or reallowed  or paid to dealers  and any securities exchanges  on
which the Debt Securities may be listed.
 
    If  underwriters are used in the sale,  the Debt Securities will be acquired
by the underwriters for their own account and may be resold from time to time in
one or more transactions, at fixed price or prices, which may be changed, or  at
market  prices prevailing  at the  time of  sale, or  at prices  related to such
prevailing market prices, or  at negotiated prices. The  Debt Securities may  be
offered  to the public either through underwriting syndicates represented by one
or more managing underwriters or directly by  one or more of such firms.  Unless
otherwise  set  forth  in  the Prospectus  Supplement,  the  obligations  of the
underwriters to  purchase  the  Debt  Securities  will  be  subject  to  certain
conditions  precedent and the underwriters will be obligated to purchase all the
offered Debt Securities, if any are purchased. Any initial public offering price
and any discounts or concessions allowed or reallowed or paid to dealers may  be
changed from time to time.
 
    Debt  Securities  may be  sold  directly by  the  Company or  through agents
designated by the Company from time to time. Any agent involved in the offer  or
sale  of the Debt  Securities in respect  of which this  Prospectus is delivered
will be named, and any commissions payable by the Company to such agent will  be
set forth, in the accompanying Prospectus Supplement. Unless otherwise indicated
in  the Prospectus  Supplement, any  such agent will  be acting  on a reasonable
efforts basis for the period of its appointment.
 
    If so indicated  in the  Prospectus Supplement, the  Company will  authorize
underwriters,   dealers  or  agents  to  solicit  offers  by  certain  specified
institutions to purchase Debt Securities from the Company at the public offering
price set forth in  the accompanying Prospectus  Supplement pursuant to  delayed
delivery contracts providing for payment and delivery on a specified date in the
future.  Such  contracts will  be subject  to  any conditions  set forth  in the
accompanying Prospectus Supplement and such Prospectus Supplement will set forth
the commission payable for solicitation of such contracts. The underwriters  and
other  persons soliciting  such contracts  will have  no responsibility  for the
validity or performance of any such contracts.
 
    Underwriters, dealers and agents may  be entitled, under agreements  entered
into  with the Company, to indemnification  by the Company against certain civil
liabilities, including liabilities under the Securities Act of 1933, as amended,
or to contribution by the  Company to payments they may  be required to make  in
respect thereof.
 
    Certain  of the underwriters, agents or  dealers and their associates may be
customers of,  or engage  in transactions  with and  perform services  for,  the
Company in the ordinary course of business.
 
                                 LEGAL MATTERS
 
    Certain  legal matters in connection with the Debt Securities will be passed
upon for  the Company  by Cahill  Gordon &  Reindel (a  partnership including  a
professional corporation), New York, New York.
 
                                    EXPERTS
 
    The  consolidated balance  sheets of Engelhard  as of December  31, 1995 and
1994 and the consolidated statements of earnings, shareholders' equity and  cash
flows  of Engelhard for each of the three years in the period ended December 31,
1995, incorporated  by  reference  in  this  Prospectus  and  elsewhere  in  the
Registration  Statement, have been incorporated herein in reliance on the report
of Coopers & Lybrand L.L.P., independent accountants, given on the authority  of
that firm as experts in accounting and auditing.
 
    The  consolidated balance sheet of Mearl Corporation as of December 31, 1995
and the consolidated statements of  income, shareholders' equity and cash  flows
of  Mearl  Corporation for  the year  ended December  31, 1995,  incorporated by
reference in this Prospectus and  elsewhere in the Registration Statement,  have
been  incorporated herein in reliance on the report of Coopers & Lybrand L.L.P.,
independent accountants,  given on  the authority  of that  firm as  experts  in
accounting and auditing.
 
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