RENTECH INC /CO/
S-3, 1998-03-04
ENGINEERING SERVICES
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  As filed with the Securities and Exchange Commission on March 4, 1998
  
                                          Registration No. 333-
  
                      SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549
  

                                   FORM S-3
  
                         Registration Statement Under
                          THE SECURITIES ACT OF 1933
  
                                RENTECH, INC.
             (Exact name of Registrant as specified in charter)

                Colorado                                       84-0957421
  (State or Other Jurisdiction of                        (I.R.S. Employer
   Incorporation or Organization)                     Identification No.)
  
  1331 17th Street, Suite 720, Denver, Colorado 80202      (303) 298-8008
  (Address, including zip code and telephone number, including area code,
  of Registrant's principal executive offices and intended principal place
  of business)
  
            Dennis L. Yakobson, President
            1331 17th St. Suite 720
            Denver, Colorado  80202                  (303) 298-8008
            (Name, address and telephone number of agent for service)
  
             Copy to:  Loren L. Mall, Esq.
                       Brega & Winters P.C.
                       1700 Lincoln Street, Suite 2222
                       Denver, Colorado  80203
  
  Approximate date of commencement of proposed sale to the public:
  From time to time after the effective date of this Registration Statement,
  as the selling shareholders shall determine.
  
  If the only securities being registered on this Form are being
  offered pursuant to dividend or interest reinvestment plans, please check
  the following box.  /  /
  
  If any of the securities being registered on this Form are to be offered
  on a delayed or continuous basis pursuant to Rule 415 under the
  Securities Act of 1933, other than securities offered only in connection
  with dividend or interest reinvestment plans, check the following box.
  /X/
  
  If this Form is filed to register additional securities for an offering
  pursuant to Rule 462(b) under the Securities Act, please check the
  following box and list the Securities Act registration statement number
  of the earlier effective registration statement for the same
  offering.  /  /
  
  
  If this Form is a post-effective amendment filed pursuant to Rule 462(c)
  under the Securities Act, check the following box and list the Securities
  Act registration statement number of the earlier effective registration
  statement for the same offering.  /  /
  
  If delivery of the prospectus is expected to be made pursuant to Rule
  434, please check the following box.  /  /
  
  
  <PAGE>
                                                      PAGE 2
  
               CALCULATION OF REGISTRATION FEE
  <TABLE>
<CAPTION>

Title of Shares         Amount to be    Proposed Maximum      Proposed Maximum      Amount of
to be Registered        Registered(1)   Offering Price        Aggregate Offering    Registration
                                        per Unit(2)           Price(1)              Fee
- ----------------        -------------   ----------------      ----------------      ------------
<S>                     <C>             <C>                   <C>                   <C>

Common Stock             2,044,550      $1.1875               $ 2,427,903.13        $  716.23

Common Stock Under-        575,909      $1.1875               $   683,891.94        $  201.75
lying Stock Purchase
Warrants

Common Stock Under-      1,880,301      $1.1875               $ 2,232,857.44        $  658.69
lying Convertible
Notes

Common Stock Under-      2,666,667      $1.1875               $ 3,166,667.06        $  934.17
lying Series 1998-A
Preferred Stock

Common Stock Under-     10,666,667      $1.1875               $12,666,667.06        $3,736.67
lying Warrants to
Purchase Series
1998-B Preferred
Stock


Total                   17,834,094                            $21,177,986.63        $6,247.51

<FN>
<F1>        Subject to adjustment pursuant to the anti-dilution provisions of the securities being
            registered on this Form, as allowed by Rule 416.  
<F2>        Based on average of the closing bid and asked prices as quoted on NASDAQ within five
            days of the respective filing dates, pursuant to Rule 457(c).  Estimated solely for
            the purpose of calculating the registration fee pursuant to Rule 457(c).
</FN>
</TABLE>
    
    
    The Registrant hereby amends this Registration Statement on such date
    or dates as may be necessary to delay its effective date until the
    Registrant shall file a further amendment which specifically states
    that this Registration Statement shall thereafter become effective in
    accordance with Section 8(a) of the Securities Act of 1933 or until the
    Registration Statement shall become effective on such date or dates as
    the Commission, acting pursuant to said Section 8(a), may determine.
    
    
    
    
    
    
    
    
    
    
    
    
  
    
    <PAGE>
                                                        PAGE 3
    P   R   O   S   P   E   C   T   U   S
  
  
                         Subject to Completion, Dated March 4, 1998
  
  
                                  RENTECH, INC.
    
    
                 17,834,094 Shares Common Stock ($.01 par value)
    THESE SECURITIES ARE SPECULATIVE AND INVOLVE A HIGH DEGREE OF RISK. 
                      SEE RISK FACTORS BEGINNING AT PAGE 8
    
    
       
  
  
       This Prospectus relates to the offer and sale by the Selling
    Shareholders (see "Selling Shareholders" of up to 17,834,094 shares
    (the "Shares") of common stock, $.01 par value per share (the "Common
    Stock") of Rentech, Inc. ("Rentech" or the "Company") issuable upon
    (i) conversion of convertible promissory notes of the Company (the
    "Convertible Notes") into up to 1,880,301 shares of Common Stock;
    (ii) exercise of warrants to purchase up to 575,909 shares of Common
    Stock (the "Warrants");  (iii) conversion of $2,000,000 aggregate
    principal amount of the Company's Series 1998-A Preferred Stock
    convertible into Common Stock ("Series A Preferred Stock");  (iv)
    exercise of warrants to purchase up to $8,000,000 aggregate principal
    amount of the Company's Series 1998-B Preferred Stock convertible into
    Common Stock ("Series B Preferred Stock");  (v) together with 2,044,550
    shares of Common Stock previously issued to Selling Shareholders. 
  
       The number of Shares to be offered by those Selling Shareholders
    who own Series 1998-A Preferred Stock and warrants to purchase Series
    1998-B Preferred Stock depends upon the price at which the preferred
    stock is converted into Common Stock.  See "SUMMARY-Recent
    Developments."  For purposes of determining the number of Shares to be
    offered by such Selling Shareholders, the number of Shares calculated
    to be issuable upon conversion of the preferred stock is based on a low
    conversion price.  That conversion price, which is used merely for the
    purposes of setting forth a number for this Prospectus, is 75% of the
    average closing bid price for the Common Stock over the five
    consecutive trading days preceding the first sale of preferred stock on
    January 26, 1998. That average price was $1.00.  The conversion price
    used for this Prospectus is therefore $.75.  The number of Shares of
    Common Stock issuable upon conversion of the preferred stock is subject
    to adjustment depending on the market price on the date of conversion
    and could be materially less or more than the number estimated in this
    Prospectus.  The exact number depends on future events that cannot be
    predicted by the Company.  The unknown factors include the amount of
    the preferred stock that is converted and the future market price of
    the Common Stock, and whether dividends on the preferred stock are paid
    in Shares of Common Stock or cash. 
  
       The Selling Shareholders are identified in this Prospectus under
    the heading "Selling Shareholders."  The Shares may be offered by
    Selling Shareholders, their pledgees, donees, transferees or other
    successors in interest from time to time:  (i) in transactions in the
    over-the-counter market, on the automated inter-dealer system on which
    shares of Common Stock of the Company are then listed, in negotiated
    transactions, or a combination of such methods of sale, and (ii) at
  
  
  
  
    <PAGE>
                                                        PAGE 4
  
    market prices prevailing at the time of sale, at prices related to such
    prevailing market prices, or at negotiated prices.  The Selling
    Shareholders may effect such transactions by selling the Shares to or
    through securities broker-dealers.  Such broker-dealers may receive
    compensation in the form of discounts, concessions, or commissions from
    the Selling Shareholders and/or the purchasers of the Shares for whom
    such broker-dealers may act as agent or to whom they sell as principal,
    or both (which compensation as to a particular broker-dealer might be
    in excess of customary commissions).  See "Selling Shareholders" and
    "Plan of Distribution."  Selling Shareholders may also sell such shares
    pursuant to Rule 144 or Rule 144A under the Securities Act of 1933 if
    the requirements for the availability of such rules have been 
    satisfied. 
    
         None of the proceeds from the sale of the Shares by the Selling
    Shareholders will be received by the Company.  The Company has received
    net proceeds in the amount of approximately $2,220,000 from the
    purchase price paid for the issued Shares, Convertible Notes
    Series 1998-A Preferred Stock and the warrants to purchase Series
    1998-B Preferred Stock.  The Company will receive the purchase price
    paid upon exercise of the Warrants and conversion of Series 1998-A and
    1998-B Preferred Stock.  See "USE OF PROCEEDS."  
    
         The Company has agreed to bear all expenses (other than
    underwriting discounts, selling commissions and underwriter expense
    allowance, and fees and expenses of counsel and other advisers to the
    Selling Shareholders) in connection with the registration and sale of
    the Shares being offered by the Selling Shareholders.  The Company has
    agreed to indemnify the Selling Shareholders against certain
    liabilities, including liabilities under the Securities Act of 1933, as
    amended (the "Securities Act").  
    
         The Common Stock of the Company is listed and traded on NASDAQ on
    the SmallCap Market under the symbol "RNTK."  On February 27, 1998, the
    closing sale price of the Common Stock, as reported by the NASDAQ
    SmallCap Market, was $1.1875 per share. 
    
         THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
    SECURITIES AND EXCHANGE COMMISSION, NOR HAS THE COMMISSION PASSED UPON
    THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO THE
    CONTRARY IS A CRIMINAL OFFENSE.
    
  
  
  
  
  
  
  
  
  
  
  
    
              The date of this Prospectus is                , 1998
                                             ---------------
    
  
  
  
  
    
    
    <PAGE>                                              PAGE 5
    
    
                              AVAILABLE INFORMATION
    
         The Company is subject to the informational requirements of the
    Securities Exchange Act of 1934 (the "Exchange Act") and in accordance
    therewith, files reports and other information with the Securities and
    Exchange Commission (the "Commission").  Proxy statements, reports and
    other information concerning the Company can be inspected and copied at
    Room 1024 of the Commission's office at 450 Fifth Street, N.W.,
    Washington, D.C. 20549, and the Commission's Regional Offices in Denver
    (Suite 4800, 1801 California Street, Denver, Colorado 80202), New York
    (Room 1228, 75 Park Place, New York, New York 10007), and Chicago
    (Suite 1400, Northwestern Atrium Center, 500 West Madison Street,
    Chicago, Illinois 60621-2511), and copies of such material can be
    obtained from the Public Reference Section of the Commission at 450
    Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.  This
    Prospectus does not contain all information set forth in the
    Registration Statement of which this Prospectus forms a part and
    exhibits thereto which the Company has filed with the Commission under
    the Securities Act and to which reference is hereby made.  
    
                       DOCUMENTS INCORPORATED BY REFERENCE
    
         The Company will provide, without charge, to each person to whom a
    copy of this Prospectus is delivered, including any beneficial owner,
    upon the written or oral request of such person, a copy of any or all
    of the documents incorporated by reference herein (other than exhibits
    to such documents, unless such exhibits are specifically incorporated
    by reference into the information that the Prospectus incorporates). 
    Requests should be directed to: 
    
                  Rentech, Inc.
                  1331 17th Street, Suite 720
                  Denver, Colorado 80202
                  Telephone number:  (303) 298-8008
                  Attention:  James P. Samuels, Chief Financial Officer
    
         The following documents filed with the Commission by the Company
    (File Number 0-19260) are hereby incorporated by reference into this
    Prospectus:
    
         (i)  The Company's Annual Report on Form 10-KSB dated December 29,
    1997 for the 12-month period ended September 30, 1997, as amended by
    its Form 10-KSB/A dated January 15, 1998.
  
         (ii)  The Company's Quarterly Report on Form 10-QSB dated February
    13, 1998 for the quarter ended December 31, 1997. 
  
         (iii)  The Company's Current Report on Form 8-K dated March 2,
    1998.
    
         All documents filed with the Commission by the Company pursuant to
    Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act subsequent to
    the date of this Prospectus and prior to the termination of the
    offering registered hereby shall be deemed to be incorporated by
    reference into this Prospectus and to be a part hereof from the date of
    the filing of such documents.  Any statement contained 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
  
  
  
    
    <PAGE>
                                                        PAGE 6
  
    the extent that a statement contained herein or in any subsequently
    filed document which  also is or is deemed to be incorporated by
    reference herein modifies or supersedes such statement.  Such statement
    so modified or superseded shall not be deemed, except as so modified or
    superseded, to constitute a part of this Prospectus.  The following
    summary is qualified in its entirety by, and should be read in
    conjunction with, the more detailed information contained herein and in
    the consolidated financial statements, including the notes thereto,
    incorporated by reference into this Prospectus.  The documents
    incorporated in this Prospectus contain forward looking statements,
    which are inherently uncertain.  Actual results may differ from those
    discussed in such forward looking statements for the reasons, among
    others, discussed in "RISK FACTORS."
    
    
                                       SUMMARY
    
    The Company
    
         Rentech, Inc. ("Rentech" or the "Company") was organized as a
    Colorado corporation in 1981 to develop and exploit processes for the
    conversion of natural gas and other low-value carbon-bearing gases and
    solids into valuable liquid hydrocarbons, including premium diesel
    fuel, naphthas and waxes.  The gas-to-liquids technology developed by
    the Company ("Rentech Process Technology" or "Technology") is protected
    by a series of patents issued by the U.S. Patent Office.  The ability
    of the Technology to convert carbon-bearing gases into valuable liquid
    hydrocarbons has been validated in two pilot plants operated
    periodically  between 1982 and 1989, in a 235 barrel per day commercial
    scale facility in 1992 and 1993, and in a third pilot plant presently
    being operated in Rentech's test facility at Pueblo, Colorado.
    Rentech's gas-to-liquids Technology has been licensed for use in India
    in a 360 barrel per day plant that the licensee is now beginning to
    construct. 
    
         During March 1997, the Company entered into the business of
    manufacturing and selling water-based stains, sealers and coatings by
    purchasing the assets of Okon, Inc. ("Okon").  The Company is
    continuing and expanding the 20-year old business of Okon as a
    wholly-owned subsidiary.  Okon sells environmentally clean, water
    repellant sealers, coatings and stains for wood, concrete and masonry. 
    The customers are the construction industry and architects.  Okon
    presently provides Rentech's primary source of revenues. 
    
         During July 1997, Rentech and ITN Energy Systems, Inc., a
    privately-owned Colorado corporation formed a Colorado limited
    liability company called ITN/ES LLC.  On February 20, 1998 the Company
    contributed capital to ITN/ES LLC, consisting of $200,000 in cash and
    1,200,000 shares of the Company's Common Stock for its 10% interest in
    ITN/ES LLC.  ITN/ES LLC is entering into a new business called ITN
    Electronic Substrates LLC.  Rentech owns 50% of ITN Electronic
    Substrates LLC.  ITN Electronic Substrates LLC intends to engage in the
    manufacture and sale of several types of flexible thin-film on which it
    has electronically deposited metals with unique properties, such as
    copper and molybdenum, that provide conductive paths to which computer
    chips may be attached.  The new business intends to begin its first
    activities and begin production in 1998.  The customers are expected to
    be contract manufacturers in the computer, aerospace and medical
    instrument industries, as well as large end-users which use the
    substrates to manufacture their own products. 
    
    
    <PAGE>
                                                        PAGE 7
  
         The Company's long-term plan is to diversify into three industry
    groups centered around its three present lines of business.  Rentech
    plans to continue licensing its gas-to-liquids Technology in a
    petrochemical group, to establish an environmental and industrial
    products group that includes products such as the stains, sealers,
    repellants and other coatings produced by Okon, and to develop an
    advanced technology group with such technologies as the new business of
    ITN Electronic Substrates LLC. 
  
         The Company is continuing its original business of licensing its
    gas-to-liquids Technology, including sale of its proprietary catalyst
    used in the conversion process.  Licenses are granted in exchange for
    license fees and ongoing royalties on the production of liquid
    hydrocarbons from conversion plants that use the Technology and are
    constructed and owned by licensees.  Rentech has licensed its
    Technology for use in India for a plant now under construction by its
    Indian licensee at Arunachal Pradesh, India.  Rentech is providing its
    Indian licensee engineering design and technical services under
    contract, and will provide such services to subsequent licensees for
    their use in constructing their plants, together with engineering
    services and startup operational support services on a fee basis for
    licensed plants.  In addition, Rentech may reserve the right to
    contract for the engineering and supply the synthesis gas conversion
    reactor modules that are essential to use of its Technology in
    conversion plants.  Rentech is not now receiving significant revenues
    from its gas-to-liquids Technology.  
    
         The Rentech Technology uses as feedstock natural gas from gas
    wells that are not producing or that flare gas, or synthesis gas, a
    mixture of hydrogen and carbon monoxide gases, produced by gasification
    of coal and other carbonaceous materials.  These sources of fuel are in
    abundant supply worldwide.  A potential feedstock of growing importance
    is the heavy, high sulphur fuels at refineries commonly known as
    refinery bottoms.  Other sources of feedstock include methane, a gas
    collected from coal beds, as well as industrial off gases. The
    Technology can provide a means of utilizing gas resources that are
    currently unmarketable due to their remote locations or because of the
    presence of diluents such as carbon dioxide or nitrogen. 
    
         The diesel fuel produced by using the Technology has been tested
    to have a sulphur content below detectable limits and to have improved
    combustion characteristics when compared to commercial No. 2 diesel
    fuel.  These qualities make it less polluting than presently available
    diesel fuel, and, unlike alternative fuels such as methanol or
    compressed natural gas, does not require any engine or vehicle
    modifications for use.  Based upon prices of crude oil at about $16 per
    barrel, and commercial No. 2 diesel fuel at approximately $.50 per
    gallon, management believes the diesel fuel can be produced and sold at
    competitive prices and, particularly in view of the requirements of the
    federal Clean Air Act, may be saleable at premium prices.  The
    Technology has the potential of reducing, in this and other countries,
    dependency upon imports of crude oil and petroleum products by
    converting the large fields of shut-in natural gas reserves in this
    country into liquids that can be inexpensively trucked to users.
    
         The executive offices of the Company are located at 1331 17th
    Street, Suite 720, Denver, Colorado 80202, telephone (303) 298-8008,
    fax (303) 298-8010.
  
  
  
  
  
    <PAGE>
                                                        PAGE 8
  
    Recent Developments
  
         On January 26, and on February 9, 1998, the Company sold a total
    of 200,000 shares of its Series 1998-A Preferred Stock at $10 per share
    in a private placement to certain persons included among the Selling
    Shareholders.  The Series 1998-A Preferred Stock may be converted by
    the holders into Common Stock at $1.00 per share of Common Stock as to
    120,000 shares of the preferred stock and at $1.03125 per share of
    Common Stock as to 80,000 shares of the preferred stock, or, if lower,
    82.5% of the average closing bid of the Common Stock over the five
    consecutive trading days following the date of conversion.  120,000
    shares of the Series 1998-A Preferred Stock is convertible starting May
    26, and the remaining 80,000 shares are convertible starting June 9,
    1998.
  
         The holders of the Series 1998-A Preferred Stock acquired, without
    additional cost, warrants for the purchase of the Company's Series
    1998-B Preferred Stock at $10 per share.  The warrants provide for the
    warrant holders, during the 18 months after the purchase of the Series
    1998-A Preferred Stock, to purchase and the Company to sell 200,000
    shares of the Series 1998-B Preferred Stock, and at the Company's
    option, up to a maximum of 800,000 shares of the Series
    1998-B Preferred Stock at $10 per share.   The obligations of the
    Company to sell and the warrant holders to purchase are subject to
    certain objective criteria, primarily the trading volume and market
    price of the Common Stock.  Shares of the Series 1998-B Preferred Stock
    are convertible into shares of Common Stock at 82.5% of the average
    closing bid of the Common Stock for the five trading days preceding
    conversion of the preferred stock into Common Stock.  
   
       Both the Series 1998-A Preferred Shares and the 1998-B Preferred
    Shares accrue dividends at 9% per annum.  The dividends may, at the
    election of the Company, be paid in cash or shares of Common Stock at
    its market price at the time of payment.  The holders of the preferred
    shares are entitled, in the event of liquidation, dissolution or
    winding up of the Company, to receive the $10 par value plus
    accumulated but unpaid dividends on the preferred shares before
    distributions are made to holders of Common Stock.
  
       The Shares offered hereby by the Selling Shareholders include a
    maximum of 13,333,334 Shares of Common Stock issuable upon conversion
    of the Series 1998-A Preferred Stock and the Series 1998-B Preferred
    Stock.  For purposes of determining the number of Shares to be offered
    by the Selling Shareholders who hold the preferred shares, the number
    of Shares calculated to be issuable upon conversion of the preferred
    stock is based on a low conversion price.  That conversion price, which
    is used merely for the purposes of setting forth a number for this
    Prospectus, is 75% of the average closing bid price of the Common Stock
    over the five consecutive trading days preceding the first sale of
    preferred stock on January 26, 1998.  That average price was $1.00. 
    The conversion price used for this Prospectus is therefore $.75.  The
    number of Shares of Common Stock issuable upon conversion of the
    preferred stock is subject to adjustment depending on the market price
    on the date of conversion and could be materially less or more than the
    number estimated in this Prospectus.  The exact number depends on
    future events that cannot be predicted by the Company.  The unknown
    factors include the amount of the preferred stock that is converted and
    the future market price of the Common Stock, and whether dividends on
    the preferred stock are paid in Shares of Common Stock or cash. 
    
    
  
  
    <PAGE>
    
                                                        PAGE 9
    
                                   RISK FACTORS
    
         This Prospectus contains statements that constitute 
    "forward-looking statements" within the meaning of Section 21E of the
    Exchange Act and Section 27A of the Securities Act.  The words
    "expect," estimate," "anticipate," "predict," "believe," and similar
    expressions and variations thereof are intended to identify
    forward-looking statements.  Such statements appear in a number of
    places in this filing and include statements regarding the intent,
    belief or current expectations of the Company, its directors or
    officers with respect to, among other things (a) trends affecting the
    financial condition or results of operations of the Company, and (b)
    the business and growth strategies of the Company.  Readers are
    cautioned that any such forward-looking statements are not guarantees
    of future performance and involve risks and uncertainties, and that
    actual results may differ materially from those projected in this
    Prospectus, for the reasons, among others, set forth in the following:
    
         1.  Lack of Profitable Operations.  From inception on December 18,
    1981, through September 30, 1997, the Company has sustained losses
    aggregating $9,735,824.  For the year ended September 30, 1997 and the
    nine month period ended September 30, 1996, the Company had net losses
    of $1,375,686 and $392,478, respectively.  For the three months ended
    December 31, 1997 and 1996, the Company recorded losses of $503,020 and
    $257,540, respectively.  The increase of approximately 350% in loss for
    the twelve month period in 1997 compared to the nine month period in
    1996 is due to a decrease in contract revenues and license fees of
    $295,176, increase in interest expense of approximately $289,000 from
    the addition of $1,250,500 in debt and extraordinary gain in 1996 of
    $200,434.  Increases in 1997 costs over 1996 are attributable in
    general to the longer fiscal period in 1997 and in particular to public
    relations costs and approximately $100,000 in hiring costs of a chief
    financial officer.  Profit contributed by Okon from its acquisition in
    March 1997 partially offset the increases in costs due to the longer
    fiscal period.  The losses since inception raise substantial doubt
    about the ability of the Company to continue as a going concern, as
    stated in the report of independent certified public accountants
    contained in the September 30, 1997 audited financial statements. 
    There are no assurances that the Company will complete acquisitions of
    revenue producing businesses or that the Company's licensees will
    complete construction of plants using the Technology, or that any
    gas-to-liquids conversion plants that are completed will be operated
    profitably or provide engineering design fees, license fees or
    royalties for the Company.
    
         2.  Economic Feasibility of Gas-to-Liquids Technology Not Assured. 
    Whether any full-scale conversion plant using the Technology can be
    profitably operated depends upon the availability of low-cost feedstock
    and the economic feasibility or efficiency of the Technology, as well
    as a ready market for the end products (primarily premium diesel fuel,
    naphthas and waxes) at reasonable prices.  The diesel fuel produced by
    the Technology has not been subjected to long-term engine tests to
    determine if there are any adverse effects.  No in-depth cost or price
    studies have been prepared by independent third parties for the
    Company.  Any significant decrease in prices of crude oil below
    approximately $16 or of commercial No. 2 diesel fuel below
    approximately $.50 per gallon could have a material adverse effect upon
    the economic potential of the Technology.
    
  
  
    
    <PAGE>
                                                       PAGE 10
    
         3.  Dependence upon Management.  At this stage of the Company's
    development, economic success of the gas-to-liquids Technology depends
    upon design of gas conversion plants and their startup to achieve
    optimal process plant operations, and establishment of the Company's
    advanced technology business.  Both require knowledge, skills, and
    relationships unique to the Company's technical personnel.  Moreover,
    to successfully compete with its gas conversion Technology and advanced
    technology, the Company will be required to engage in continuous
    research and development regarding processes, products, markets and
    costs.  Loss of the services of the executive officers of the Company,
    particularly Drs. Charles B. Benham or Mark S. Bohn due to their
    technical expertise and knowledge related to the gas conversion
    Technology, could be expected to have a material adverse effect upon
    the Company.  The Company's employment contract with Dr. Benham,
    expires on March 31, 1999.  It has no employment contract with Dr. Bohn
    who works for the Company on a part-time basis as needed. 
  
         4.  New Business Risks Associated With Entry into Advanced
    Technology Business.  The likelihood of success of the Company's entry
    into the advanced technology business of producing and selling flexible
    thin-film substrates by electronic deposition through ITN Electronic
    Substrates LLC, and the Company's proposed entry, through ITN/ES LLC
    and other entities, into other new businesses involving advanced
    technology, must be considered in view of the problems, expenses,
    difficulties, complications and delays frequently encountered with
    starting up a new business, including the development of new technology
    and the marketing of new products.  The Company has no history of
    operations in these lines of business upon which to evaluate its
    prospects for future operating or financial success.  
    
         5.  Risk of Technological and Regulatory Change and Requirement
    for New Products.  The market for advanced technology products is
    characterized by rapidly changing technology, new legislation and
    regulations, and evolving industry standards.  The introduction of
    products embodying new technology, the adoption of new legislation or
    regulations, or the emergence of new industry standards could render
    the Company's products and future products, if any, obsolete and
    unmarketable.  The success and growth of the Company will depend, in
    part, upon its ability to anticipate changes in technology, market
    needs, law, regulations, and industry standards, and to successfully
    develop and introduce new and enhanced products on a timely basis.  The
    Company will need to devote a substantial amount of its efforts to
    research and development as well as to sales and marketing. 
    
         6.  Effect of Competition.  The products of the gas-to-liquids
    Technology will compete with other petroleum products, including
    products produced by similar methods.  To a great extent, competition
    in this business will be based upon price, although compliance with
    environmental laws may create demand for the Company's low aromatic,
    sulphur-free diesel fuel even at premium prices.  Others have and are
    actively seeking to develop technology that will enable results similar
    to the Company's processes for conversion of gas-to-liquid
    hydrocarbons.  The most likely competition will come from major
    corporations in the oil and gas and synthetic fuel industries that have
    vastly greater technical and financial resources than the Company.  The
    stains, sealers and coatings industry is highly competitive and has
    historically been subject to intense price competition.  It is
    estimated that there are approximately 800 coatings manufacturers in
    the United States, many of which are small companies that provide
    intense competition within regional and local markets, especially with
  
    
    <PAGE>
                                                        PAGE 11
    
    respect to lower price coatings and custom made specialty items
    required on a short-term delivery basis.  The Company's primary
    competition is approximately one dozen other manufacturers, of
    which at least five are large, better capitalized, and have more
    extensive distribution networks.  Other manufacturers are large
    diversified corporations, the assets of which are vastly greater than
    those of the Company, which compete on a nationwide basis.  The
    Company's overall position in the coatings industry, as one of the
    smallest manufacturers, is  minor.  The advanced technology industry
    producing thin-film substrates by electronic deposition is highly
    competitive.  Competitors include at least a dozen United States and
    international competitors, many of which are large diversified
    businesses, and the assets of which are greatly superior to those of
    the Company.  Competition for the advanced technology products is based
    upon price, quality, and quantity of the products, as well as
    reputation, none of which have been established by the Company because
    it is only now entering into this business.  
    
         7.  Need for Inexpensive Feedstock to Produce Gas-to-Liquids
    Products that Are Competitively Priced.  Successful exploitation of the
    Company's gas-to-liquids Technology depends upon the availability of
    substantial quantities of carbon-bearing, low-cost feedstock for plants
    that use the Technology.  Management believes such feedstock gas will
    be readily available from sources such as natural gas wells that are
    not producing gas because of remote locations, and from other sources
    such as synthesis gas produced by gasification of coal and refinery
    bottoms, as well as industrial off gases.  However, in the event
    low-cost gas cannot be obtained, then plants using the Technology may
    not be able to produce products for sale at competitive prices. 
    Although the cost of diesel fuel produced at the plants may require
    that it be sold at prices somewhat higher than competing diesel fuels,
    management expects that many users, particularly those subject to the
    increasingly strict mandates of the Clean Air Act, will pay a premium. 
    If prices for crude oil are in the range of $16 per barrel and diesel
    fuel at approximately $.50 per gallon or higher, management believes
    that the diesel fuel produced using the Technology can be priced
    competitively, but no such assurance can be given.  Also, should oil or
    commercial No. 2 diesel fuel prices both decrease significantly, any
    market for the Company's diesel fuel that may hereafter exist could be
    adversely affected.  
    
         8.  Lack of Adequate Capital to Exploit the Gas-to-Liquids
    Technology.  The capital cost of gas conversion plants and natural gas
    fields or other sources of feedstock that use the Company's Technology
    requires more capital than is available to the Company or to many of
    its potential licensees.  While the Company does not presently plan to
    build its own plants for use of the Technology, and expects its
    licensees to acquire feedstock and build and own plants for which they
    are licensed by the Company, many potential licensees are unable to
    finance the construction costs and acquire feedstock, or to do so
    readily.  These limitations have slowed and will continue to delay use
    of the Technology and resulting revenues to the Company from use of
    the Technology unless the Company is able to join with other better
    capitalized companies to commercially exploit the Technology.  There
    are no assurances that such joint arrangements will be available or
    acceptable to the Company. 
    
         9.  Lack of End Product Purchase Contracts.  The Company has
    previously contacted various potential purchasers of the products of
    the gas-to-liquids Technology, primarily users of diesel fuel, and
    
  
  
    <PAGE>
                                                        PAGE 12
    
    potential purchasers of the thin-film substrates, but has no contracts
    for purchase of such end products.  The Company's gas-to-liquids
    licensees are responsible for marketing products from gas conversion
    plants constructed by them.  Because the diesel fuel produced is
    relatively non-polluting, it is believed that metropolitan
    transportation districts and other users of fuel in urban areas having
    air pollution problems may be interested in purchasing such fuel,
    possibly at a premium over the price of commercial diesel fuel.
    However, no such assurance can be given. 
    
         10.  Risk of Expatriation Laws.  In its offshore operations
    involving the gas-to-liquids Technology, the Company expects it will
    usually be paid design contract fees, license fees, royalties and other
    compensation denominated in the currency of the subject country.  The
    Company will thus be subject to the risk of fluctuation of currency
    exchange rates.  Whenever possible, however, management intends to
    negotiate payment in U.S. dollars.  In addition, some countries have
    laws that may adversely affect the ability of the Company to remove
    funds from that country, may impose taxes upon such removal, or limit
    the amount of the payments that a licensee can make to the Company.
    
         11.  Uninsured Losses Related to the Gas-to-Liquids Technology. 
    Certain types of losses (generally losses of a catastrophic nature such
    as damage to a gas conversion plant in which the Company may hold an
    interest caused by fire, explosion, war, earthquakes and floods) are
    either uninsurable or not economically insurable.  Should an uninsured
    or partially insured loss occur, the Company could suffer a loss of
    invested capital and any profits that might otherwise have been
    anticipated.
    
         12.  Limitation on Protection of Intellectual Property.  The
    Company relies on a combination of patent, trade secret, copyright and
    trademark law, nondisclosure agreements and technical security measures
    to protect its intellectual property rights in its lines of business. 
    There are no assurances that these rights or any additional patents
    will be adequate to protect the Company's interest in present and any
    future intellectual property.  Patents and copyrights may be contested
    by competitors and held invalid or not effective to preclude others
    from using similar concepts and functionally similar processes.  The
    protection afforded to intellectual property by other nations is
    generally not as effective as that provided within the United States. 
    
         13.  No Expectation of Dividends.  No dividends have been paid on
    the Company's Common Stock since inception, and it is highly unlikely
    that any dividends will be paid in the near term due to existing
    capital needs.  However, if the business plan is successful, the
    Company may generate substantial revenue from its lines of business,
    which, barring unanticipated capital commitments, is expected to allow
    payment of dividends.  No assurance can be given, however, that the
    Company will ever pay, or be in a position to pay dividends.
    
         14.  Potential Dilution Due to Exercise of Stock Options and
    Warrants and Additional Private Offerings.  The Company has committed
    to issue a substantial number of shares of Common Stock upon exercise
    of presently outstanding stock options, warrants and preferred stock.
    The Company may  issue additional shares of its Common Stock or
    warrants for the purchase of Common Stock to raise operating capital or
    acquire other businesses or assets.  Issuance of additional shares of
    Common Stock will reduce the percentage ownership interest in the
    Company represented by shares of Common Stock acquired by purchasers
    and may dilute the value of their interest in the Company.
    
    <PAGE>
                                                        PAGE 13
    
         15.  Potential Dilution of Shareholder Rights by Issuance of
    Preferred Stock.  The Company is authorized to issue up to 1,000,000
    shares of preferred stock, par value $10 per share and has entered into
    arrangements for issuing up to all of the preferred stock.  See "RECENT
    DEVELOPMENTS."  Preferred stock can be issued in one or more series,
    the terms of which are determined at the time of issuance by the
    board of directors without any requirement for shareholder approval. 
    Such rights may include voting rights, preferences as to dividends and,
    upon liquidation, conversion and redemption rights, and mandatory
    redemption provisions pursuant to sinking funds or otherwise. 
    Conversion of the preferred stock or issuance of preferred stock in the
    future could affect the rights of the holders of Common Stock and
    therefore reduce the value of the Common Stock.  Rights could also be
    granted to holders of preferred stock issued after this date that could
    reduce the attractiveness of the Company as a potential takeover
    target.  See "DESCRIPTION OF COMMON STOCK AND PREFERRED STOCK." 
  
         16.  Deterrence of Tender Offers by Fair Price Provisions.  The
    Company's Articles of Incorporation include provisions designed to
    assure shareholders, to the extent possible, that any hostile takeover
    attempt or merger of the Company with a significant shareholder or its
    affiliate will result in shareholders receiving a fair value for their
    securities.  These provisions include grouping of the board of
    directors into three classes with staggered terms; a requirement that
    directors may be removed without cause only with the approval of the
    holders of 66-2/3% of the outstanding voting power of the capital stock
    of the Company; and a requirement that the holders of not less than
    66-2/3% of the voting power of the outstanding capital stock of the
    Company approve certain business combinations of the Company with any
    holder of more than 10% of such  voting power or an affiliate of any
    such holder unless the transaction is either approved by at least a
    majority of the uninterested and unaffiliated members of the board of
    directors or unless certain minimum price and procedural requirements
    are met.  These provisions could deter a hostile tender offer by a
    third party for the purchase of some or all of the Company's
    outstanding securities and could have the effect of entrenching
    management.  See "DESCRIPTION OF COMMON STOCK AND PREFERRED
    STOCK."
    
         17.  Volatility of Stock Prices; Penny Stock Rules.  The
    over-the-counter markets for securities such as the Company's Common
    Stock historically have experienced extreme price and volume
    fluctuations.  These broad market fluctuations, variations in the
    Company's results of operations, and other economic and industry trends
    may adversely affect the market price of the Company's Common Stock. 
    Although the Common Stock is listed for quotation on the NASDAQ
    SmallCap Market, there are no assurances that the Common Stock will
    meet the minimum bid price of $1 or other listing requirements. 
    Accordingly, there can be no assurance that the Common Stock will
    remain eligible for quotation on NASDAQ.  In the event of ineligibility
    and delisting, the Common Stock would become subject to rules of the
    Securities and Exchange Commission regulating broker-dealer practices
    in connection with transactions in "penny stocks."  The penny stock
    rules may make many brokers unwilling to engage in transactions in the
    Company's Common Stock because of the added burdens imposed on the
    broker by those rules to make disclosures and to determine and
    establish the suitability of each prospective purchaser of the Common
    Stock.  The penny stock rules may make it more difficult for purchasers
    of Common Stock in this offering to dispose of their securities and
    could adversely affect the market price of the Common Stock.  
    
    
    <PAGE>
                                                        PAGE 14
  
                               USE OF PROCEEDS
    
         The Shares are being offered for the account of Selling
    Shareholders, and the Company will not receive any proceeds from the
    sale of Shares by them.  
  
        The Company has applied the net proceeds of approximately $481,554
    that it received from the sale of the Common Stock associated
    with the Convertible Notes to redemption of its preferred shares issued
    in 1997.  The Company anticipates applying the net proceeds of
    approximately $1,765,000 that it received from the sale of the Series
    1998-A Preferred Shares as follows:
  
  
  <TABLE>
  <CAPTION>
  Purpose                                          Proceeds
  -------                                          --------
  <S>                                              <C>
  Expansion of gas-to-liquids business             $   465,000
  Consulting fees and expenses                         400,000
  Contribution for 10% of ITN/ES LLC                   200,000
  Working capital of ITN/ES LLC                        100,000
  Working capital of ITN Electronic Substrates LLC     300,000
  Payment of long-term promissory notes of Okon        300,000
                                                    ----------
              Total                                 $1,765,000
  </TABLE>
  
         If all of the Warrants are exercised and all the warrants to
    purchase Series 1998-B Preferred Shares are exercised, of which there
    is no assurance, the Company would receive approximately $7,400,000
    as the net proceeds.  The Company anticipates that such net proceeds
    would be applied for the following purposes and in the following
    amounts:
  
  <TABLE>
  <CAPTION>
  Purpose                                           Proceeds
  -------                                           --------
  <S>                                               <C>
  Expansion of gas-to-liquids business              $1,400,000
  Acquisition of additional interests
    in ITN/ES LLC                                    3,000,000
  Additional working capital for ITN
    Electronic Substrates LLC                        3,000,000
                                                    ----------
       Total                                        $7,400,000
  </TABLE>
  
    
         The foregoing information as to the use of the net offering
    proceeds represents management's best estimate based upon current
    conditions as to how the net proceeds would be used.  The Company
    reserves the right to revise the application of the net proceeds. Any
    amounts not used for these purposes will be used for working capital
    and general corporate purposes.
  
  
  
  
  
    
    <PAGE>
                                                        PAGE 15
  
                               SELLING SHAREHOLDERS
  
         A total of 15,789,544 of the Shares registered pursuant to this
  Registration Statement underlie the Convertible Notes, Warrants, Series
  1998-A Preferred Stock and warrants to purchase the Series
  1998-B Preferred Stock, all of which are issued and outstanding.  The
  remaining 2,044,550 Shares are issued and outstanding.  The Convertible
  Notes, Warrants, Series 1998-A Preferred Stock, Warrants to purchase
  Series 1998-B Preferred Stock, and 2,044,550 Shares were issued by the
  Company in transactions that the Company reasonably believes to be exempt
  from the registration requirements of the Securities Act of 1933, as 
  amended, to persons reasonably believed by the Company to be "accredited
  investors" (as defined in Rule 501(a) of the Securities Act of 1933, as
  amended).
  
         The Convertible Notes and the Warrants for the purchase of 175,909
  Shares are presently subject to conversion and if not converted by April
  20, 1998, and if the average closing bid price for the 5 trading days
  preceding that date is $.50 or more, will be converted then at $.33 per
  share.  If these conditions do not occur, the Convertible Notes will be
  converted, no later than October 9, 1998, into Shares of Common Stock at
  the lower of 70% of the average closing bid price of the Common Stock for
  the 5 trading days immediately preceding the conversion date or $.33 per
  share.
  
         Of the Warrants, those for the purchase of up to 200,000 shares of
  Common Stock may be exercised until March 7, 1999 at $.25 per share.  The
  remaining Warrants for the purchase of up to 200,000 shares of Common
  Stock may be exercised starting 120 days after issuance, or May 26 and
  June 9, 1998, and ending February 9, 2003.  The exercise price of the
  latter Warrants is $1.00.
  
         The Series 1998-A Preferred Stock may be converted into Common
  Stock starting May 26 and June 9, 1998 as to 120,000 and 80,000 Shares,
  respectively.  The conversion price is $1.00 and $1.03125 for 120,000 and
  80,000 shares, respectively, of the preferred stock, or 82.5% of the
  average closing bid price of the Common Stock over the five consecutive
  trading days preceding the date of conversion, whichever is lower.  
  
         The warrants for purchase of the Series 1998-B Preferred Stock may
  be exercised until July 26 and August 9, 1999.  The conversion price is
  82.5% of the average closing bid price of the Common Stock over the five
  consecutive trading days preceding the date of conversion. 
  
     The shares of Common Stock owned by the Selling Shareholders and the
  shares of Common Stock (the "Shares") underlying the Convertible Notes,
  stock purchase warrants and preferred shares held by them are being
  offered by the Selling Shareholders identified in the following table.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
    
    <PAGE>
                                                        PAGE 16
  
    <TABLE>
    <CAPTION>
                                                                       Number of Shares
                                                         Number of     to be Beneficially Owned
Name of                        Number of Shares        Shares That   On Completion of the Offering
Selling                        Beneficially Owned      May Be                              % of
Shareholder                    Record      Indirect    Offered(1)    Record    Indirect    Class
- -----------------              ------      --------    ----------    ------    --------    -----
<S>                            <C>         <C>         <C>           <C>       <C>         <C>

Marte W. Anderson & Shireen          ---     5,333,334     666,667         ---        ---       0
  Anderson
The Augustine Fund, L.P.             ---     6,666,667   6,666,667         ---        ---       0
William K. Beaucamp and
  Timothy A. Beaucamp                ---        40,303      40,303         ---        ---       0
Charles C. Bruner                    ---        41,000      41,000         ---        ---       0
Steven F Burns and
  Maureen E. Burns                   ---       120,909     120,909         ---        ---       0
Andrew Cambron                       ---        40,303      40,303         ---        ---       0
J.C. Carpenter                       ---        80,606      80,606         ---        ---       0
William J. Cleary                    ---        40,303      40,303         ---        ---       0
Denora Corp. A.E.C.                  ---       104,788     104,788         ---        ---       0
Ellen W. Epstein                     ---        40,303      40,303         ---        ---       0
Alma L. Fleutsch                     ---         3,259       3,259         ---        ---       0
The Global Funding Group, L.L.C.     ---       266,000     200,000         ---        ---       0
Global Funding Public 
   Relations Services, Ltd.       66,000       200,000      66,000         ---        ---       0
Joanne R. Gregory                    ---        80,606      80,606         ---        ---       0
The Hamilton Fund, L.L.C.            ---     1,333,333   1,333,333         ---        ---       0
Hyett Capital Ltd.                   ---        25,000      25,000         ---        ---       0
G. Scott Howard                      ---       201,515     201,515         ---        ---       0
Kent T. Hultquist                 63,375       120,909     120,909      63,375        ---       *
Donald G. Hunter                 307,600       161,212     161,212     307,600        ---     1.0
ITN/ES LLC                     1,200,000           ---   1,200,000         ---        ---       0
Richard E. Jung                      ---        40,303      40,303         ---        ---       0
Lucas Liakos                         ---        80,606      80,606         ---        ---       0
B. Lombardi                          ---        40,303      40,303         ---        ---       0
Tara Grau Martin                     ---        80,606      80,606         ---        ---       0
Sharon Mencin and Douglas
  Tripple                            ---        80,606      80,606         ---        ---       0
George E. Miller and
  Karen E. Miller                    ---        60,454      60,454         ---        ---       0
J. Henry Morgan                      ---        20,000      20,000         ---        ---       0
Phillip S Mushlin                366,950       120,909     120,909     366,950        ---     1.2
Eugene L. Neidiger                   ---        42,000      42,000         ---        ---       0
Regina L. Neidiger                   ---         6,400       6,400         ---        ---       0
William Oyen and
  Carolyn S. Oyen, 
  TTEE FBO Oyen Family
  Joint Trust                        ---       211,591     211,591         ---        ---       0
Robert L. Parrish                    ---        19,000      19,000         ---        ---       0
Anthony B. Petrelli                  ---        41,000      41,000         ---        ---       0
Thomas F. Pierson, P.C.              ---        40,303      40,303         ---        ---       0
Pro Future Special Equities
  Fund, L.P.                         ---     5,333,334   4,666,667         ---        ---       0
Stanley B. Ranch                     ---       120,909     120,909         ---        ---       0
Carolyn Mia Reed                     ---       175,000     175,000         ---        ---       0
Dr. Stuart Sklarek                   ---       161,212     161,212         ---        ---       0
Robert L. Surdam                  61,000        80,606      80,606      61,000        ---       0
Douglas W. Tripple                   ---        57,000      57,000         ---        ---       0
Gregory D. Tripple and
  Maria-Elena Sandoval-Duque         ---        68,515      68,515         ---        ---       0
Harvey D. Tripple and
  Beverly A. Tripple                 ---       201,515     201,515         ---        ---       0
John J. Turk, Jr.                    ---        44,603      44,603         ---        ---       0
Robert E. Warner and
  Patricia J. Warner                 ---        40,303      40,303         ---        ---       0
Howard, Weil, Labouisse,
  Friedrichs, Inc.               100,000           ---     100,000         ---        ---       0
                                                         ---------
      Total                                              17,834,094(1)
</TABLE>
  ---------------
  [FN]
        *Less than 1%
  <F1>  Represents up to a maximum of 15,789,554 shares of Common Stock
        issuable upon conversion of the Convertible Notes, exercise of the
        Warrants, conversion of Series 1998-A Preferred Stock, exercise of
        of warrants to purchase Series 1998-B Preferred Stock, plus
        2,044,550 Shares issued and outstanding.  For purposes of
        determining the number of Shares to be offered by such Selling
        Shareholders, the number of Shares calculated to be issuable upon
        conversion of the preferred stock is based on a low conversion
        price.  That conversion price, which is used merely for the
        purposes of setting forth a number for this Prospectus, is 75% of
        the average closing bid price for the Common Stock over the five
        consecutive trading days preceding the first sale of preferred
        stock on January 26, 1998.  That average price was $1.00.  The
        conversion price used for this Prospectus is therefore $.75.  The
        number of Shares of Common Stock issuable upon conversion of the
        preferred stock is subject to adjustment depending on the market
        price on the date of conversion and could be materially less or
        more than the number estimated in this Prospectus.  The exact
        number depends on future events that cannot be predicted by the
        Company.  The unknown factors include the amount of the preferred
        stock that is converted, the future market price of the Common
        Stock, and whether dividends on the preferred stock are paid in
        Shares of Common Stock or cash. 
  
  </FN>
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  <PAGE>
                                                      PAGE 17
  
          To the knowledge of the Company, none of the other Selling
    Shareholders nor any officers, directors or employees of a Selling
    Shareholder have held any office, position or other material
    relationship with the Company, its predecessors or affiliates during
    the past three years. 
    
         Each Selling Shareholder has represented that he purchased the
    Common Stock for investment and with no present intention of
    distributing or reselling such Shares unless registered for resale. 
    However, in recognition of the fact that holders of restricted
    securities may wish to be legally permitted to sell their Shares when
    they deem appropriate, the Company has filed with the Commission under
    the Securities Act a Form S-3 registration statement of which this
    Prospectus forms a part with respect to the resale of the Shares from
    time to time in the over-the-counter market or in privately negotiated
    transactions.  The Company has agreed to prepare and file such
    amendments and supplements to the Registration Statement and to use its
    best efforts to obtain effectiveness of the Registration Statement and
    to keep the Registration Statement effective until all the Shares
    offered hereby have been sold pursuant thereto, until such Shares are
    no longer, by reason of Rule 144 under the Securities Act or any other
    rule of similar effect, required to be registered for the sale thereof
    by the Selling Shareholders, or for a period of 24 months, whichever
    occurs first. 
    
         Certain of the Selling Shareholders, their associates and
    affiliates may from time to time be customers of, engage in
    transactions with, and/or perform services for the Company or its
    subsidiaries in the ordinary course of business.  
    
    
                              PLAN OF DISTRIBUTION
    
         The Shares offered hereby may be sold from time to time to
    purchasers directly by the Selling Shareholders.  Alternatively, the
    Selling Shareholders may from time to time offer the Shares to or
    through underwriters, broker/dealers or agents, who may receive
    compensation in the form of underwriting discounts, concessions or
    commissions from the Selling Shareholders or the purchasers of Shares
    for whom they may act as agents.  The Selling Shareholders and any
    underwriters, broker/dealers or agents that participate in the
    distribution of Shares may be deemed to be "underwriters" within the
    meaning of the Securities Act and any profit on the sale of the Shares
    by them deemed to be "underwriters" within the meaning of the
    Securities Act and any discounts, commissions, concessions or other
    compensation received by any such underwriter, broker/dealer or agents
    may be deemed to be underwriting discounts and commissions under the
    Securities Act. 
  
         The Shares offered hereby may be sold from time to time in one or
    more transactions at fixed prices, at prevailing market prices at the
    time of sale, any varying prices determined at the time of sale, or at
    negotiated prices.  The sale of the Shares may be effected in
    transactions (which may involve crosses or block transactions) (i) on
    any national or international securities exchange or quotation services
    on which the Shares may be listed or quoted at the time of sale, (ii)
    in the over-the-counter market, (iii) in transactions otherwise than on
    such exchanges or in the over-the-counter market or (iv) through the
    writing of options.  At the time a particular offering of the Shares is
  
  
  
  
  <PAGE>
                                                      PAGE 18
  
  
    made, a prospectus supplement, if required, will be distributed which
    will set forth the aggregate amount and type of Shares being offered
    and the terms of the offering, including the name or names of any
    underwriters, broker/dealers of agents, any discounts, commissions and
    other terms constituting compensation from the Selling Shareholders and
    any discounts, commissions or concessions allowed or reallowed or paid
    to broker/dealers.  Selling Shareholders may also sell such shares
    pursuant to Rule 144 or Rule 144A under the Securities Act of 1933 if
    the requirements for the availability of such rules have been
    satisfied. 
    
         To comply with the securities laws of certain jurisdictions, if
    applicable, the Shares will be offered or sold in such jurisdictions
    only through registered or licensed brokers or dealers.  In addition,
    in certain jurisdictions the Shares may not be offered or sold unless
    they have been registered or qualified for sale in such jurisdictions
    or any exemption from registration or qualification is available and
    is complied with. 
  
         The Selling Shareholders will be subject to applicable provisions
    of the Exchange Act and the rules and regulations thereunder, which
    provisions may limit the timing of purchases and sales of any of the
    Shares by the Selling Shareholders.  The foregoing may affect the
    marketability of the Shares. 
  
         Pursuant to the Registration Rights Agreement, all expenses of the
    registration of the Shares will be paid by the Company, including,
    without limitation, Commission filing fees and expenses in compliance
    with state securities or "blue sky" laws; provided, however, that the
    Selling Shareholders will pay all underwriting discounts and selling
    commissions, if any.  The Selling Shareholders will be indemnified by
    the Company against certain civil liabilities, including certain
    liabilities under the Securities Act, or will be entitled to
    contribution in connection therewith. 
    
    
                 DESCRIPTION OF COMMON STOCK AND PREFERRED STOCK
    
         The authorized capital stock of the Company consists of
    100,000,000 shares of Common Stock, $.01 par value per share, and
    1,000,000 shares of preferred stock, $10 par value per share.  A quorum
    for purposes of meetings of common shareholders consists of a majority
    of the issued and outstanding shares of Common Stock, and once a quorum
    is established, action of a routine nature may properly be taken by a
    majority of the shares represented in person or by proxy at the
    meeting.  Most major corporate transactions such as mergers,
    consolidations, sales of all or substantially all assets, and certain
    amendments to the articles of incorporation require approval by the
    holders of two-thirds of the issued and outstanding shares of Common
    Stock entitled to vote.  The Company's board of  directors is
    authorized to issue shares of Common Stock and preferred stock without
    approval of shareholders.  Shares of preferred stock may be issued in
    one or more series, the terms of which will be determined at the time
    of issuance by the board of directors without any requirement for
    shareholder approval.  Such rights may include voting rights,
    preferences as to dividends, and upon liquidation, conversion and
    redemption rights, and mandatory redemption provisions pursuant to
    sinking funds or otherwise.  The Company has issued 200,000 shares
    of Series 1998-A Preferred Stock, and may issue 800,000 shares of
    Series 1998-B Preferred Stock.  See "SUMMARY-Recent Developments."
  
  
  <PAGE>
  
                                                       PAGE 19
  
         The Shares of Common Stock covered by this Prospectus are fully
    paid and nonassessable.  Holders of the Common Stock have no preemptive
    rights.  Each stockholder is entitled to one vote for each share of
    Common Stock held of record by such stockholder.  There is no right to
    cumulate votes for election of directors.  Upon liquidation of the
    Company, the assets then legally available for distribution to holders
    of the Common Stock will be distributed ratably among such shareholders
    in proportion to their stock holdings.  Holders of Common Stock are
    entitled to dividends when, as and if declared by the Board of
    Directors out of funds legally available therefor.  While shares of
    the Series 1998-A and Series 1998-B Preferred Stock are outstanding, no
    dividends may be paid on the Common Stock unless dividends on the
    Preferred Stock have been paid, and no shares of Common Stock may be
    purchased or funds set aside for that purpose  by the Company except in
    amounts of less than $100,000 per year. 
   
    
                                  LEGAL OPINIONS
    
         Brega & Winters P.C., 1700 Lincoln Street, Suite 2222, Denver,
    Colorado 80203 has rendered an opinion as to the legality of the Shares
    issued to the Selling Shareholders.
  
  
                                     EXPERTS
    
         The financial statements incorporated in this prospectus by
    reference from the Company's Annual Report on Form 10-KSB for the
    twelve months ended September 30, 1997 and the nine-month period ended
    September 30, 1996 have been audited by BDO Seidman, LLP, independent
    certified public accountants, as stated in their report (which
    contained an explanatory paragraph relative to the going concern
    uncertainty), which is incorporated herein, and has been so
    incorporated in reliance upon such report given upon the authority of
    the said firm as experts in accounting and auditing.
    
         NO DEALER, SALESMAN, OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO
    GIVE ANY INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE
    CONTAINED IN THIS PROSPECTUS IN CONNECTION WITH THE OFFERING HEREIN
    CONTAINED AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS
    MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR THE
    SELLING SHAREHOLDERS.  THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO
    SELL, OR A SOLICITATION OF AN OFFER TO BUY, THE SECURITIES OFFERED
    HEREBY IN ANY JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE
    AN OFFER OR SOLICITATION.  NEITHER THE DELIVERY OF THIS PROSPECTUS NOR
    ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN
    IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE COMPANY
    SINCE THE DATE HEREOF OR THAT ANY INFORMATION CONTAINED HEREIN IS
    CORRECT AS TO ANY OF THE TIME SUBSEQUENT TO ITS DATE.  HOWEVER, THE
    COMPANY HAS UNDERTAKEN TO AMEND THE REGISTRATION STATEMENT OF WHICH
    THIS PROSPECTUS IS A PART TO REFLECT ANY FACTS OR EVENTS ARISING AFTER
    THE EFFECTIVE DATE THEREOF WHICH INDIVIDUALLY OR IN THE AGGREGATE
    REPRESENT A FUNDAMENTAL CHANGE IN THE INFORMATION SET FORTH IN THE
    REGISTRATION STATEMENT.  IT IS ANTICIPATED, HOWEVER, THAT MOST UPDATED
    INFORMATION WILL BE INCORPORATED HEREIN BY REFERENCE TO THE COMPANY'S
    REPORTS FILED UNDER THE SECURITIES EXCHANGE ACT OF 1934.  SEE
    "DOCUMENTS INCORPORATED BY REFERENCE."
    
         ALL DEALERS EFFECTING TRANSACTIONS IN THE REGISTERED SECURITIES,
    WHETHER OR NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED TO
    DELIVER A PROSPECTUS.  THIS IS IN ADDITION TO THE OBLIGATION OF DEALERS
    TO DELIVER A PROSPECTUS WHEN ACTING AS UNDERWRITERS AND WITH RESPECT TO
    THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS. 
  
    
    <PAGE>
                                                        PAGE 20
    
    <TABLE>
    <CAPTION>
                              TABLE OF CONTENTS
  
  <S>                                                          <C>
  Available Information                                        5
  
  Documents Incorporated by Reference                          5
  
  Summary                                                      6
  
  Risk Factors                                                 8
  
  Use of Proceeds                                              14
  
  Selling Shareholders                                         15
  
  Plan of Distribution                                         17
  
  Description of Common Stock and Preferred Stock              18
  
  Legal Opinions                                               19
  
  Experts                                                      19
  
  </TABLE>

                                     PART II
    
                      INFORMATION NOT REQUIRED IN PROSPECTUS
    <TABLE>
    <CAPTION>
Item 14.  Other Expenses of Issuance and Distribution.

<S>                                                              <C>
Registration Fee - Securities and Exchange Commission            $  6,247.51
Legal Fees and Disbursements*                                      25,000.00
Accounting Fees and Disbursements*                                  5,000.00
Legal Fees and Expenses in Connection with Blue Sky Filings*        1,750.00
Miscellaneous*                                                        375.00
                                                                 -----------
     Total                                                       $ 38,372.51
                                                                 ===========
- --------------------
<FN>
* Estimated.
</FN>
</TABLE>
  Item 15.  Indemnification of Directors and Officers.
    
          The only charter provision, bylaw, contract, arrangement or
    statute under which any director, officer or controlling person of
    Registrant is insured and indemnified in any manner as such is as
    follows:
    
  
  
  
  
    
    <PAGE>
                                                        PAGE 21
    
    
          (a)  Registrant has the power under the Colorado Corporation Code
    to indemnify any person who was or is a party or is threatened to be
    made a party to any action, whether civil, criminal, administrative or
    investigative, by reason of the fact that such person is or was a
    director, officer, employee, fiduciary, or agent of Registrant or was
    serving at its request in a similar capacity for another entity,
    against expenses (including attorneys' fees), judgments, fines and
    amounts paid in settlement actually and reasonably incurred by him in
    connection therewith if he acted in good faith and in a manner he
    reasonably believed to be in the best interest of the corporation and,
    with respect to any criminal action or proceeding, had no reasonable
    cause to believe his conduct was unlawful.  In case of an action
    brought by or in the right of Registrant such persons are similarly
    entitled to indemnification if they acted in good faith and in a manner
    reasonably believed to be in the best interests of Registrant but no
    indemnification shall be made if such person was adjudged to be liable
    for negligence or misconduct in the performance of his duty to
    Registrant unless and to the extent the court in which such action or
    suits was brought determines upon application that despite the
    adjudication of liability, in view of all circumstances of the case,
    such person is fairly and reasonably entitled to indemnification.  Such
    indemnification is not deemed exclusive of any other rights to which
    those indemnified may be entitled under the Articles of Incorporation,
    Bylaws, agreement, vote of shareholders or disinterested directors, or
    otherwise.
    
         (b)  The Articles of Incorporation and Bylaws of Registrant
    generally require indemnification of officers and directors to the
    fullest extent allowed by law. 
  
         (c)  Paragraph 3 of the Certificate of the Selling Shareholders,
    filed as Exhibit 1 to this Registration Statement, contains provisions
    by which Registrant and its controlling persons are indemnified
    against certain losses, claims, expenses and liabilities under the
    Securities Act of 1933, as amended. 
    
    
    Item 16.  Exhibits.
  
    The following exhibits are filed as part of this Registration
    Statement:
  
  
    <TABLE>
    <CAPTION>
Exhibit                                                                                    Sequential
Number         Document                                                                    Page Number
<S>            <C>                                                                         <C>
- -------        --------                                                                    -----------

EX-1           Form of Certificate of Selling Shareholders (incorporated by reference
               from Registrant's Form S-3 Registration Statement No. 333-35571, 
               Exhibit 1, filed with the Securities and Exchange Commission on 
               September 12, 1997).

EX-3.(i).1     Restated and Amended Articles of Incorporation, dated January 4, 1991
               (incorporated herein by reference from the exhibits to Amendment
               No. 2 to Registrant's Form S-18 Registration Statement No. 33-37150-D
               filed with the Securities and Exchange Commission on January 18, 1991).



<PAGE>
                                                                      PAGE 22

EX-3.(i).2     Articles of Amendment dated April 5, 1991 to the Restated and Amended
               Articles of Incorporation (incorporated herein by reference from the
               exhibits to Registrant's Current Report on Form 8-K dated August 10,
               1993 filed with the Securities and Exchange Commission).
  
EX-3.(i).3     Articles of Amendment to Articles of Incorporation - Preferences,
               Limitations and Relative Rights of Convertible Preferred Stock,
               Series 1998-A (incorporated herein from Registrant's Form 8-K
               dated March 2, 1998 filed with the Securities and Exchange
               Commission on March 2, 1998).

EX-3.(i).4     Articles of Amendment to Articles of Incorporation - Preferences, Limitations
               and Relative Rights of Convertible Preferred Stock, Series 1998-B
               (incorporated herein from Registrant's Form 8-K dated March 2, 1998
               filed with the Securities and Exchange Commission on March 2, 1998).

EX-3.3         Bylaws as amended, (incorporated herein by reference from the exhibits
               to Registrant's Form S-18 Registration Statement No. 33-37150-D filed
               with the Securities and Exchange Commission on January 18, 1991).

EX-4           Form of Placement Agent Warrant for the purchase of 58,300 shares of Common
               Stock (incorporated herein from Registrant's Form 10-KSB dated December 29,
               1997, as Exhibit 4.1, filed with the Securities and Exchange Commission on
               December 29, 1997).

EX-4.1         Form of Convertible Promissory Notes (incorporated herein from Registrant's
               Form 10-KSB dated December 29, 1997, as Exhibit 4.2, filed with the
               Securities and Exchange Commission on December 29, 1997).

EX-4.2         Form of Warrant to Purchase 200,000 Shares of Common Stock (incorporated
               herein from Registrant's Form 8-K dated March 2, 1998 filed with the
               Securities and Exchange Commission on March 2, 1998).

EX-4.3         Form of Registration Rights Agreement dated October 1997 (incorporated herein
               from Registrant's Form 8-K dated March 2, 1998 filed with the Securities
               and Exchange Commission on March 2, 1998).

EX-4.4         Form of Registration Rights Agreement dated February 1998 (incorporated herein
               from Registrant's Form 8-K dated March 2, 1998 filed with the Securities
               and Exchange Commission on March 2, 1998).

EX-4.5         Form of Warrant to Purchase Series 1998-B Preferred Shares dated February 9,
               1998 for purchase of 800,000 Shares of Series 1998-B Preferred Stock
               (incorporated herein from Registrant's Form 8-K dated March 2, 1998,
               filed with the Securities and Exchange Commission on March 2, 1998).

EX-5           Opinion of Brega & Winters, P.C.

EX-10.1        Profit Sharing Plan (incorporated herein by reference from the exhibits
               to Registrant's Form S-18 Registration Statement No. 33-37150-D filed
               with the Securities and Exchange Commission on or about October 30, 1990).

EX-10.2        1990 Stock Option Plan (incorporated herein by reference from the
               exhibits to the Company's Registration Statement No. 33-37150-D filed
               with the Securities and Exchange Commission on Form S-18 dated
               April 12, 1992).

EX-10.3        1994 Stock Option Plan (incorporated herein by reference from the
               exhibits to Post-Effective Amendment No. 5 to Registrant's Form S-18
               on Form SB-2 Registration Statement No. 33-37150-D filed with the
               Securities and Exchange Commission on or about September 19, 1994).

EX-10.4        1996 Stock Option Plan (incorporated herein by reference from the
               exhibits to Registrant's Current Report on Form 8-K dated December 18,
               1996 filed with the Securities and Exchange Commission).


  
  <PAGE>
                                                      PAGE 23
  
EX-10.5        Employment Contracts with Charles B. Benham, Dennis L. Yakobson and
               Ronald C. Butz dated November 14, 1994 (incorporated herein by refer-
               ence from the exhibits to Registrant's Current Report on Form 8-K dated
               November 14, 1994 filed with the Securities and Exchange Commission).

EX-10.6        Articles of Organization of ITN Electronic Substrates LLC dated August 4,
               1997 (incorporated herein by reference from the exhibits to Registrant's
               Amendment No. One on Form 10-KSB/A dated October 31, 1997 to Form 10-KSB
               for the Transition Period ended September 30, 1996). 

EX-10.7        License to Donyi Polo Petrochemicals Pty dated June 25, 1994
               (incorporated herein by reference from the exhibits to Registrant's
               Amendment No. One on Form 10-KSB/A dated October 31, 1997 to Form 10-KSB
               for the Transition Period ended September 30, 1996). 
 
EX-23.1        Consent of Independent Certified Public Accountants.

EX-23.2        Consent of Brega & Winters P.C. (included in Exhibit 5).

EX-99.1        Letter of Intent between Rentech, Inc. and ITN Energy Systems, Inc. dated
               October 17, 1996 (incorporated herein by reference from the exhibits to
               Registrant's Current Report on Form 8-K/A dated November 7, 1996 filed
               with the Securities and Exchange Commission).

EX-99.2        Report of Independent Certified Public Accountants (incorporated herein by
               reference from the exhibits to Registrant's Annual Report on Form
               10-KSB for the fiscal year ended September 30, 1997 and for the nine
               months ended September 30, 1996, filed with the Securities and Exchange
               Commission on December 29, 1997).
</TABLE>
    Item 17.  Undertakings.
    
    I.     (a)  The undersigned Registrant hereby undertakes:  
    
                   (1)  To file, during any period in which offers or sales
              are being made, a post-effective amendment to this
              Registration Statement: 
    
                   (i)  to include any prospectus required by Section
              10(a)(3) of the Securities Act of 1933; 
    
                   (ii)  to reflect in the prospectus any facts or events
              arising after the effective date of the Registration
              Statement (or the most recent post-effective amendment
              thereof) which, individually or in the aggregate, represent a
              fundamental change in the information set forth in the
              Registration Statement; 
    
                   (iii)  to include any material information with respect
              to the plan of distribution not previously disclosed in the
              Registration Statement or any material change to such
              information in the Registration Statement;
    
                   (2)  That, for the purpose of determining any liability
              under the Securities Act of 1933, each such post-effective
              amendment shall be deemed to be a new registration statement
              relating to the securities offered therein, and the offering
              of such securities at that time shall be deemed to be the
              initial bona fide offering thereof; and 
  
  
  
  
    
    <PAGE>
                                                        PAGE 24
    
                   (3)  To remove from registration by means of a
              post-effective amendment any of the securities being
              registered which remain unsold at the termination of the
              offering.
    
           (b)  The undersigned registrant hereby undertakes that, for
    purposes of determining any liability under the Securities Act of 1933,
    each filing of the registrant's annual report pursuant to Section 13(a)
    or Section 15(d) of the Securities Exchange Act of 1934 (and, where
    applicable, each filing of an employee benefit plan's annual report
    pursuant to Section 15(d) of the Securities Exchange Act of 1934) that
    is incorporated by reference in the registration statement shall be
    deemed to be a new registration statement relating to the securities
    offered therein, and the offering of such securities at that time shall
    be deemed to be the initial bona fide offering thereof.
    
           (c)  Insofar as indemnification for liabilities arising under
    the Securities Act of 1933 may be permitted to directors, officers and
    controlling persons of the Registrant pursuant to the foregoing
    provisions, or otherwise, the Registrant has been advised that in the
    opinion of the Securities and Exchange Commission such indemnification
    is against public policy as expressed in the Act and is, therefore,
    unenforceable.  In the event that a claim for indemnification against
    such liabilities (other than the payment by the Registrant of expenses
    incurred or paid by a director, officer or controlling person of the
    Registrant in the successful defense of any action, suit or proceeding)
    is asserted by a director, officer or controlling person in connection
    with the securities being registered, the Registrant will, unless in
    the opinion of its counsel the matter has been settled by controlling
    precedent, submit to a court of appropriate jurisdiction the question
    of whether such indemnification by it is against public policy as
    expressed in the Act and shall be governed by the final adjudication of
    such issue.
    
    
                                    SIGNATURES
    
         Pursuant to the requirements of the Securities Act of 1933, the
    Registrant certifies that it has reasonable grounds to believe it meets
    all of the requirements for filing on Form S-3 and has duly caused this
    Registration Statement to be signed on its behalf by the undersigned,
    thereunto duly authorized, in the City of Denver, State of Colorado, on
    the 24th day of February, 1998.
    
                                RENTECH, INC.
    
                                 (signature)
                           By:  ---------------------------------
                                Dennis L. Yakobson, President
    
         Pursuant to the requirements of the Securities Act of 1933, this
    Registration Statement has been signed by the following persons in the
    capacities and on the dates indicated.
    
                          GENERAL POWER OF ATTORNEY
  
         KNOW ALL MEN BY THESE PRESENTS, each person whose signature
  appears below, hereby authorizes, constitutes and appoints Dennis L. 
  Yakobson and Ronald C. Butz and each of them, his true and lawful
  attorney-in-fact and agents with full power of substitution and 
  
  
  
    <PAGE>
                                                        PAGE 25
  
  resubstitution, for him and in his name, place and stead, in any and all
  capacities, to sign this Registration Statement for the registration
  under the Securities Act of 1933, as amended, of securities of Rentech,
  Inc. and any and all pre-effective and post-effective amendments to this
  Registration Statement, together with any and all exhibits thereto and
  other documents required to be filed with respect hereto and thereto and
  to file the same with the Securities and Exchange Commission and any
  other regulatory authority, granting unto said attorneys-in-fact and
  agents and each of them, full power and authority to do and perform each
  and every act and thing requisite or necessary to be done in and about
  the premises, as fully to all intends and purposes as he might or could
  do in person, hereby ratifying and confirming all that said
  attorneys-in-fact and agents and each of them, or their or his substitute
  or substitutes, may lawfully do or cause to be done by virtue hereof and
  incorporate such changes as any of the said attorneys-in-fact deems
  appropriate.
  
    <TABLE>
    <CAPTION>

Signature                   Title                         Date
- ---------                   -----                         ----
<S>                         <C>                           <C>


(signature)
- -------------------------   President, Chief Executive    February 24, 1998
Dennis L. Yakobson          Officer and Director



(signature)
- -------------------------   Director                      February 24, 1998
Mark S. Bohn
by Dennis L. Yakobson,
attorney in fact



(signature)
- -------------------------   Vice President, Chief         February 24, 1998
Ronald C. Butz              Operating Officer,
By Dennis L. Yakobson,      Secretary and Director
attorney in fact



(signature)
- -------------------------   Director                      February 24, 1998
Erich W. Tiepel
by Dennis L. Yakobson
attorney in fact



(signature)
- -------------------------   Vice President-Finance, and   February 24, 1998
James P. Samuels            Chief Financial Officer
</TABLE>
  
  <PAGE>
                                                                  PAGE 26
  <TABLE>                                  EXHIBIT INDEX
  <CAPTION>
Exhibit                                                                                   Sequential
Number         Document                                                                   Page Number
<S>            <C>                                                                        <C>
EX-1           Form of Certificate of Selling Shareholders (incorporated by reference
               from Registrant's Form S-3 Registration Statement No. 333-35571, 
               Exhibit 1, filed with the Securities and Exchange Commission on 
               September 12, 1997).

EX-3.(i).1     Restated and Amended Articles of Incorporation, dated January 4, 1991
               (incorporated herein by reference from the exhibits to Amendment
               No. 2 to Registrant's Form S-18 Registration Statement No. 33-37150-D
               filed with the Securities and Exchange Commission on January 18, 1991).

EX-3.(i).2     Articles of Amendment dated April 5, 1991 to the Restated and Amended
               Articles of Incorporation (incorporated herein by reference from the
               exhibits to Registrant's Current Report on Form 8-K dated August 10,
               1993 filed with the Securities and Exchange Commission).

EX-3.(i).3     Articles of Amendment to Articles of Incorporation - Preferences,
               Limitations and Relative Rights of Convertible Preferred Stock,
               Series 1998-A (incorporated herein from Registrant's Form 8-K
               dated March 2, 1998 filed with the Securities and Exchange
               Commission on March 2, 1998).

EX-3.(i).4     Articles of Amendment to Articles of Incorporation - Preferences,
               Limitations and Relative Rights of Convertible Preferred Stock, Series
               1998-B (incorporated herein from Registrant's Form 8-K dated March 2,
               1998 filed with the Securities and Exchange Commission on March 2, 1998).

EX-3.3         Bylaws as amended, (incorporated herein by reference from the exhibits
               to Registrant's Form S-18 Registration Statement No. 33-37150-D filed
               with the Securities and Exchange Commission on January 18, 1991).

EX-4           Form of Placement Agent Warrant for the purchase of 58,300 shares of
               Common Stock (incorporated herein from Registrant's Form 10-KSB dated
               December 29, 1997, as Exhibit 4.1, filed with the Securities and Exchange
               Commission on December 29, 1997).

EX-4.1         Form of Convertible Promissory Notes (incorporated herein from
               Registrant's Form 10-KSB dated December 29, 1997, as Exhibit 4.2, filed
               with the Securities and Exchange Commission on December 29, 1997).

EX-4.2         Form of Warrant to Purchase 200,000 Shares of Common Stock (incorporated
               herein from Registrant's Form 8-K dated March 2, 1998 filed with the
               Securities and Exchange Commission on March 2, 1998).

EX-4.3         Form of Registration Rights Agreement dated October 1997 (incorporated
               herein from Registrant's Form 8-K dated March 2, 1998 filed with the
               Securities and Exchange Commission on March 2, 1998).

EX-4.4         Form of Registration Rights Agreement dated February 1998 (incorporated
               herein from Registrant's Form 8-K dated March 2, 1998 filed with the
               Securities and Exchange Commission on March 2, 1998).

EX-4.5         Form of Warrant to Purchase Series 1998-B Preferred Shares dated February
               9, 1998 for purchase of 800,000 Shares of Series 1998-B Preferred Stock
               (incorporated herein from Registrant's Form 8-K dated March 2, 1998,
               filed with the Securities and Exchange Commission on March 2, 1998).

EX-5           Opinion of Brega & Winters, P.C.

EX-10.1        Profit Sharing Plan (incorporated herein by reference from the exhibits
               to Registrant's Form S-18 Registration Statement No. 33-37150-D filed
               with the Securities and Exchange Commission on or about October 30,
               1990).


  
  <PAGE>
                                                      PAGE 27

EX-10.2        1990 Stock Option Plan (incorporated herein by reference from the
               exhibits to the Company's Registration Statement No. 33-37150-D filed
               with the Securities and Exchange Commission on Form S-18 dated
               April 12, 1992).

EX-10.3        1994 Stock Option Plan (incorporated herein by reference from the
               exhibits to Post-Effective Amendment No. 5 to Registrant's Form S-18
               on Form SB-2 Registration Statement No. 33-37150-D filed with the
               Securities and Exchange Commission on or about September 19, 1994).

EX-10.4        1996 Stock Option Plan (incorporated herein by reference from the
               exhibits to Registrant's Current Report on Form 8-K dated December
               18, 1996 filed with the Securities and Exchange Commission).

EX-10.5        Employment Contracts with Charles B. Benham, Dennis L. Yakobson and
               Ronald C. Butz dated November 14, 1994 (incorporated herein by
               reference from the exhibits to Registrant's Current Report on Form 8-K
               dated November 14, 1994 filed with the Securities and Exchange
               Commission).

EX-10.6        Articles of Organization of ITN Electronic Substrates LLC dated August
               4, 1997 (incorporated herein by reference from the exhibits to
               Registrant's Amendment No. One on Form 10-KSB/A dated October 31, 1997
               to Form 10-KSB for the Transition Period ended September 30, 1996).

EX-10.7        License to Donyi Polo Petrochemicals Pty dated June 25, 1994
               (incorporated herein by reference from the exhibits to Registrant's
               Amendment No. One on Form 10-KSB/A dated October 31, 1997 to Form
               10-KSB for the Transition Period ended September 30, 1996). 
 
EX-23.1        Consent of Independent Certified Public Accountants.

EX-23.2        Consent of Brega & Winters P.C. (included in Exhibit 5).

EX-99.1        Letter of Intent between Rentech, Inc. and ITN Energy Systems, Inc.
               dated October 17, 1996 (incorporated herein by reference from the
               exhibits to Registrant's Current Report on Form 8-K/A dated
               November 7, 1996 filed with the Securities and Exchange Commission).

EX-99.2        Report of Independent Certified Public Accountants (incorporated
               herein by reference from the exhibits to Registrant's Annual Report
               on Form 10-KSB for the fiscal year ended September 30, 1997, and for
               the nine months ended September 30, 1996, filed with the Securities
               and Exchange Commission on December 29, 1997).
</TABLE>
  
                             APPENDIX
    
    On the Prospectus cover there is a red herring running vertically on
    the left-hand side of the page.  It reads as follows:
    
    Information contained herein is subject to completion or amendment.  A
    registration statement relating to these securities has been filed with
    the Securities and Exchange Commission.  These securities may not be
    sold nor may offers to buy be accepted prior to the time the
    registration statement becomes effective.  This 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 state in which such
    offer, solicitation or sale would be unlawful prior to registration or
    qualification under the securities laws of any such state.

  
  
                                                           EXHIBIT 5
  
                         Brega & Winters P.C.  Attorneys at Law
                 One Norwest Center, 1700 Lincoln Street, Suite 2222
                               Denver, Colorado 80202
                                    (303) 866-9400
                                 FAX:  (303) 861-9109
  
  
                                       March 3, 1998
  
  
  
  Rentech, Inc.
  1331 17th Street, Suite 720
  Denver, Colorado 80202
  
       Re:  Registration Statement on Form S-3
  
  Gentlemen:
  
       This firm has represented Rentech, Inc., a Colorado corporation (the
  "Company") in connection with the proposed offering by selling
  shareholders of up to 17,834,094 Shares of Common Stock, $.01 par value
  (the "Shares"), pursuant to a Registration Statement on Form S-3. In
  connection with such representation, we have reviewed the Company's
  articles of incorporation, bylaws, minute books and the applicable laws
  of the state of Colorado.  
  
       Based on such review, we are of the opinion that the Shares issued
  to the selling shareholders identified in the registration statement are
  fully paid and non-assessable.
  
       We hereby consent to the reference to our firm under the heading
  "LEGAL OPINIONS" in the Registration Statement on Form S-3 and the
  related Prospectus and to the filing of this opinion with the Securities
  and Exchange Commission as an exhibit to the Registration Statement.
  
                                  Very truly yours,
  
  
                                  (Signature)
  
                                  BREGA & WINTERS P.C.
  
  

    
                                                      EXHIBIT 23.1
    
    
    
    
               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
    
    
    
    Rentech, Inc.
    1331 17th Street, Suite 720
    Denver, CO 80202
    
    We consent to the incorporation by reference in the Registration
    Statement of Rentech, Inc. on Form S-3 of our report dated November 26,
    1997 relating to the consolidated financial statements (which contained
    an explanatory paragraph relative to the going concern uncertainty)
    appearing in the Annual Report on Form 10-KSB of Rentech, Inc. for
    the year ended September 30, 1997 and for the nine months ended
    September 30, 1996, and to the reference to us under the heading
    "Experts" in the Prospectus, which is part of such Registration
    Statement. 
    
    
    BDO Seidman, LLP
    
    
    
    
    February 24, 1998
    Denver, Colorado
    


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