================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             -----------------------
                               AMENDMENT NO. 1 TO
                                 SCHEDULE 13E-3
                        RULE 13E-3 TRANSACTION STATEMENT
           UNDER SECTION 13(E) OF THE SECURITIES EXCHANGE ACT OF 1934
                             -----------------------
                      INTERNATIONAL SPECIALTY PRODUCTS INC.
                              (NAME OF THE ISSUER)
                      INTERNATIONAL SPECIALTY PRODUCTS INC.
                                SAMUEL J. HEYMAN
                 INTERNATIONAL SPECIALTY PRODUCTS HOLDINGS INC.
                       (NAME OF PERSONS FILING STATEMENT)
                     COMMON STOCK, PAR VALUE $0.01 PER SHARE
                         (Title of Class of Securities)
                                    460337108
                      (CUSIP Number of Class of Securities)
                             -----------------------
                            RICHARD A. WEINBERG, ESQ.
                        C/O ISP MANAGEMENT COMPANY, INC.
                                 1361 ALPS ROAD
                             WAYNE, NEW JERSEY 07470
                            TELEPHONE (973) 628-4000
      (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSONS AUTHORIZED TO RECEIVE
        NOTICE AND COMMUNICATIONS ON BEHALF OF PERSONS FILING STATEMENT)

         This statement is filed in connection with (check the appropriate box):

     a.   |X| The filing of solicitation materials or an information statement
              subject to Regulation 14A, Regulation 14C or Rule 13e-3(c) under
              the Securities Exchange Act of 1934.

     b.   |_| The filing of a registration statement under the Securities Act of
              1933.

     c.   |_| A tender offer.

     d.   |_| None of the above.

     Check the following box if the soliciting materials or information
statement referred to in checking box (a) are preliminary copies: |X|

     Check the following box if the filing is a final amendment reporting the
results of the transaction: |_|

                            CALCULATION OF FILING FEE

           ----------------------                  ----------------------
           Transaction Valuation*                  Amount of Filing Fee**
           ----------------------                  ----------------------
                $134,360,564                               $26,873
           ----------------------                  ----------------------

 *   The transaction valuation was based upon the sum of (i) the product of
     12,810,336 shares of Common Stock, par value $0.01 per share, of
     International Specialty Products Inc., a Delaware corporation, at a price
     of $10.30 per share in cash and (ii) a cash-out of 1,700,156 shares of
     Common Stock covered by outstanding options at a cost of $2,414,103.

**   The amount of the filing fee, calculated in accordance with Rule 0-11(b) of
     the Securities Exchange Act of 1934, equals 1/50th of 1% of the transaction
     valuation.

|X|  Check the box if any part of the fee is offset as provided by Rule 0-11(a)
     (2) of the Securities Exchange Act of 1934 and identify the filing with
     which the offsetting fee was previously paid. Identify the previous filing
     by registration statement number, or the Form or Schedule and the date of
     its filing.

                                                   Filing Party: International
Amount Previously Paid:            $26,873         Specialty Products Inc.
Form or Registration No.:          Schedule l4A    Date Filed: November 27, 2002





                                  INTRODUCTION

     This Amendment No. 1 to the Rule 13e-3 Transaction Statement on Schedule
13E-3 (the "Schedule 13E-3") is being filed by (i) International Specialty
Products Inc., a Delaware corporation ("ISP"), the issuer of the equity
securities that are the subject of the Rule 13e-3 transaction, (ii) Samuel J.
Heyman, a natural person and beneficial owner of approximately 81% of ISP's
common stock ("Mr. Heyman") and (iii) International Specialty Products Holdings
Inc., a Delaware Corporation ("ISPH"), in connection with the merger of ISPH
with and into ISP (the OMerger"), with ISP as the surviving corporation. As a
result of the proposed Merger, (i) ISP will cease to be a publicly held company
and will become a private corporation, all the stock of which will be
beneficially owned by Mr. Heyman and (ii) each issued and outstanding share of
ISP common stock will be converted into the right to receive $10.30 in cash,
except shares beneficially owned by Mr. Heyman or by any holder who properly
demands appraisal rights under the General Corporation Law of the State of
Delaware will be cancelled. Notwithstanding this arrangement, shares owned by a
qualified charitable organization, will be entitled to receive $10.30 in cash.

     Concurrently with the filing of this Schedule l3E-3, ISP is filing
Amendment No. 1 to a preliminary proxy statement (the "Proxy Statement")
pursuant to Section 14(a) of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), pursuant to which the ISP board of directors is soliciting
proxies from stockholders of ISP in connection with the Merger. The information
in the Proxy Statement, including all annexes and exhibits thereto, is expressly
incorporated by reference herein in its entirety and responses to each item
herein are qualified in their entirety by the information contained in the Proxy
Statement and the annexes and exhibits thereto. Capitalized terms used but not
defined herein shall have the meanings ascribed to such terms in the Proxy
Statement.

ITEM 1.             SUMMARY TERM SHEET

Regulation M-A      The information set forth in the Proxy Statement under the
                    caption "Summary Term Item 1001 Sheet" is incorporated
                    herein by reference.


ITEM 2.             SUBJECT COMPANY INFORMATION

Regulation M-A
Item 1002

               (a)  NAME AND ADDRESS. The information set forth in the Proxy
                    Statement under the caption "Summary Term Sheet -
                    Information About ISP, Mr. Heyman and ISPH" is incorporated
                    herein by reference.

               (b)  SECURITIES. The information set forth in the Proxy Statement
                    under the captions "Summary Term Sheet - The Special
                    Meeting" and "The Special Meeting-Record Date" is
                    incorporated herein by reference.

               (c)  TRADING MARKET AND PRICE. The information set forth in the
                    Proxy Statement under the caption "Summary Term Sheet -
                    Trading Market and Price; Dividends" is incorporated herein
                    by reference.

               (d)  DIVIDENDS. The information set forth in the Proxy Statement
                    under the caption "Summary Term Sheet - Trading Marking and
                    Price; Dividends" is incorporated herein by reference.

            (e)-(f) PRIOR PUBLIC OFFERINGS; PRIOR STOCK PURCHASES. The
                    information set forth in the Proxy Statement under the
                    caption "Other Matters - Transactions in Capital Stock by
                    Certain Persons" is incorporated herein by reference.


                                       2



ITEM 3.             IDENTITY AND BACKGROUND OF THE FILING PERSON

Regulation M-A
Item 1003

         (a)  - (c) NAME AND ADDRESS; BUSINESS AND BACKGROUND OF ENTITIES;
                    BUSINESS AND BACKGROUND OF NATURAL PERSONS. The information
                    set forth in the Proxy Statement under the captions "Summary
                    Term Sheet -Information About ISP, Mr. Heyman and ISPH" and
                    "Special Factors - Background of the Merger" is incorporated
                    herein by reference. During the last five years, none of the
                    filing persons has been convicted in a criminal proceeding
                    (excluding traffic violations or similar misdemeanors) or
                    has been a party to a civil proceeding of a judicial or
                    administrative body of competent jurisdiction resulting in a
                    judgment, decree or final order enjoining further violations
                    of, or prohibiting or mandating activities subject to,
                    federal or state securities laws, or a finding of any
                    violations of such laws.

                    DIRECTORS AND EXECUTIVE OFFICERS OF ISP. The table below
                    sets forth for each of the directors and executive officers
                    of ISP their respective present principal occupation or
                    employment, the name and principal business of the
                    corporation or other organization in which such occupation
                    or employment is conducted and the five-year employment
                    history of each such director and executive officer. Each
                    person identified below is a United States citizen, unless
                    otherwise noted. Unless indicated otherwise, each person's
                    principal address is c/o ISP, 1361 Alps Road, Wayne, New
                    Jersey 07470.

                                                  PRESENT PRINCIPAL OCCUPATION
                                                  OR EMPLOYMENT AND MATERIAL
                                                  POSITIONS HELD DURING THE PAST
                    NAME                          FIVE YEARS
                    --------------------------    ------------------------------

                    Samuel J. Heyman

                                                   Mr. Heyman has been a
                                                   director and Chairman of the
                                                   Board of ISP since its
                                                   formation and Chairman of
                                                   the Board and director of
                                                   one of its subsidiaries
                                                   since December 2001. He was
                                                   Chief Executive Officer of
                                                   ISP and some of its
                                                   subsidiaries from their
                                                   formation to June 1999. Mr.
                                                   Heyman also has been a
                                                   director of G-I Holdings
                                                   Inc. for more than five
                                                   years and was President and
                                                   Chief Executive Officer of
                                                   G-I Holdings and some of its
                                                   subsidiaries for more than
                                                   five years until September
                                                   2000. In January 2001, G-I
                                                   Holdings filed a voluntary
                                                   petition for reorganization
                                                   under Chapter 11 of the U.S.
                                                   Bankruptcy Code due to its
                                                   asbestos-related claims. Mr.
                                                   Heyman was a director and
                                                   Chairman of the Board of
                                                   Building Materials
                                                   Corporation of America
                                                   ("BMCA") from its formation
                                                   to September 2000 and served
                                                   as Chief Executive Officer
                                                   of BMCA and some of its
                                                   subsidiaries from June 1999
                                                   to September 2000 and from
                                                   June 1996 to January 1999.
                                                   He is also the Chief
                                                   Executive Officer, Manager
                                                   and General Partner of a
                                                   number of closely held real
                                                   estate development companies
                                                   and partnerships whose
                                                   investments include
                                                   commercial real estate and a


                                       3



                                                   portfolio of publicly traded
                                                   securities. Mr. Heyman has
                                                   served as a director of
                                                   Hercules Incorporated, a
                                                   global manufacturer and
                                                   marketer of specialty
                                                   chemicals, since May 2001.

                    Sunil Kumar                    Mr. Kumar has been a
                                                   director, President and
                                                   Chief Executive Officer of
                                                   ISP since June 1999 and a
                                                   director, President and
                                                   Chief Executive Officer of
                                                   some of its subsidiaries
                                                   since June 2001 and June
                                                   1999, respectively. Mr.
                                                   Kumar was a director,
                                                   President and Chief
                                                   Executive Officer of BMCA
                                                   and some of its subsidiaries
                                                   from May 1995, July 1996 and
                                                   January 1999, respectively,
                                                   to June 1999. He also was
                                                   Chief Operating Officer of
                                                   BMCA and some of its
                                                   subsidiaries from March 1996
                                                   to January 1999. He also was
                                                   a director and Vice-Chairman
                                                   of the Board of G-I Holdings
                                                   from January 1999 to June
                                                   1999. In January 2001, G-I
                                                   Holdings filed a voluntary
                                                   petition for reorganization
                                                   under Chapter 11 of the U.S.
                                                   Bankruptcy Code due to its
                                                   asbestos-related claims. Mr.
                                                   Kumar has served as a
                                                   director of Hercules
                                                   Incorporated, a global
                                                   manufacturer and marketer of
                                                   specialty chemicals, since
                                                   May 2001.

                    Robert Englander               Mr. Englander has been a
                                                   director of ISP since April
                                                   2001. He has been the
                                                   Chairman of the Board and
                                                   Chief Executive Officer of
                                                   Belvoir Publications, a
                                                   publisher of magazines,
                                                   books and newsletters, since
                                                   February 1973. Belvoir
                                                   Publications has a business
                                                   address of 970 Park Avenue,
                                                   Penthouse North, New York,
                                                   New York 10028.

                    Sanford Kaplan                 Mr. Kaplan has been a
                                                   director of ISP since
                                                   November 1992. He has been a
                                                   private investor and
                                                   consultant since 1977 with a
                                                   business address of 10128
                                                   Empyrean Way, #303, Los
                                                   Angeles, California 90067.

                    Burt Manning                   Mr. Manning has been a
                                                   director of ISP since
                                                   November 1992. He has been
                                                   President of Brookbound,
                                                   Inc., a strategic consulting
                                                   company since December 1997.
                                                   He was Chairman of J. Walter
                                                   Thompson Company, a
                                                   multinational advertising
                                                   company, from July 1987 to
                                                   December 1997 and has served
                                                   as Chairman Emeritus of such
                                                   company since January 1998.
                                                   Mr. Manning has been a
                                                   director of Friendly Ice
                                                   Cream Corporation since
                                                   November 1997 with a
                                                   business address of 655 Park
                                                   Avenue, Apartment 8E, New
                                                   York, New York 10021.


                                       4



                    Alan M. Meckler                Mr. Meckler has been a
                                                   director of ISP since April
                                                   2001. He has been the
                                                   Chairman and Chief Executive
                                                   Officer of Jupitermedia
                                                   Group, Inc., a provider of
                                                   global real-time news and
                                                   information resources for
                                                   the internet industry, since
                                                   December 1998. He was
                                                   Chairman and Chief Executive
                                                   Officer of Mecklermedia
                                                   Corp., a provider of
                                                   internet information, from
                                                   June 1971 to November 1998.
                                                   Jupitermedia Group has a
                                                   business address of 23 Old
                                                   Kings Highway South, Darien,
                                                   Connecticut 06820.

                    Richard A. Weinberg            Mr. Weinberg has been the
                                                   Executive Vice President,
                                                   General Counsel and
                                                   Secretary of ISP and its
                                                   subsidiaries since May 1998
                                                   and was Senior Vice
                                                   President, General Counsel
                                                   and Secretary of ISP and its
                                                   subsidiaries from May 1996
                                                   to May 1998. He has also
                                                   been serving as a director
                                                   of various ISP subsidiaries
                                                   since February 2002,
                                                   December 2001 and May 1996.
                                                   Mr. Weinberg has been
                                                   President, Chief Executive
                                                   Officer, General Counsel and
                                                   Secretary of G-I Holdings
                                                   since September 2000 and was
                                                   Executive Vice President,
                                                   General Counsel and
                                                   Secretary of G-I Holdings
                                                   from May 1998 to September
                                                   2000. He also was Senior
                                                   Vice President, General
                                                   Counsel and Secretary of
                                                   these corporations from May
                                                   1996 to May 1998. Mr.
                                                   Weinberg has served as a
                                                   director of G-I Holdings
                                                   since May 1996. In January
                                                   2001, G-I Holdings filed a
                                                   voluntary petition for
                                                   reorganization under Chapter
                                                   11 of the U.S. Bankruptcy
                                                   Code due to its
                                                   asbestos-related claims. Mr.
                                                   Weinberg also has been
                                                   Executive Vice President,
                                                   General Counsel and
                                                   Secretary of BMCA and its
                                                   subsidiaries since May 1998,
                                                   and was Senior Vice
                                                   President, General Counsel
                                                   and Secretary of BMCA and
                                                   its subsidiaries from May
                                                   1996 to May 1998.

                    Susan B. Yoss                  Ms. Yoss has been the
                                                   Executive Vice President--
                                                   Finance and Treasurer of ISP
                                                   and most of its subsidiaries
                                                   since September 2000. She
                                                   was Senior Vice President
                                                   and Treasurer of ISP and
                                                   most of its subsidiaries
                                                   from July 1999 to September
                                                   2000 and was Vice President
                                                   and Treasurer of ISP and
                                                   most of its subsidiaries
                                                   from February 1998 to June
                                                   1999. She also has been
                                                   Senior Vice President of
                                                   BMCA and its subsidiaries
                                                   since August 2001, was
                                                   Senior Vice President and
                                                   Treasurer of the same
                                                   companies from July 1999 to
                                                   August 2001 and was Vice
                                                   President and Treasurer of
                                                   the same companies from
                                                   February 1998 to July 1999.
                                                   Ms. Yoss also has served as
                                                   Senior Vice President, Chief


                                       5



                                                   Financial Officer and
                                                   Treasurer of G-I Holdings
                                                   since July 1999. In January
                                                   2001, G-I Holdings filed a
                                                   voluntary petition for
                                                   organization under Chapter
                                                   11 of the U.S. Bankruptcy
                                                   Code due to its
                                                   asbestos-related claims. She
                                                   was Assistant Treasurer of
                                                   Joseph E. Seagram & Sons,
                                                   Inc., a global beverage and
                                                   entertainment company for
                                                   more than five years until
                                                   February 1998.

                    Roger J. Cope                  Mr. Cope has been Senior
                                                   Vice President--Sales and
                                                   Commercial Director--Europe
                                                   of ISP and most of its
                                                   subsidiaries since July 1999
                                                   and was a director of one of
                                                   its subsidiaries from June
                                                   2001 until September 2002.
                                                   He was Senior Vice
                                                   President, Pharmaceutical,
                                                   Agricultural and Beverage
                                                   Group of ISP and some of its
                                                   subsidiaries from July 1998
                                                   to July 1999 and Vice
                                                   President, Asia-Pacific
                                                   Region of the same
                                                   corporations from March 1997
                                                   to July 1998. Mr. Cope is a
                                                   citizen of the United
                                                   Kingdom.

                    Neal E. Murphy                 Mr. Murphy has been Senior
                                                   Vice President and Chief
                                                   Financial Officer of ISP and
                                                   its subsidiaries since
                                                   February 2002 and a director
                                                   of one of its subsidiaries
                                                   since February 2002. Prior
                                                   to joining ISP, he was
                                                   President of PQ Europe, a
                                                   global developer and
                                                   producer of silica-based
                                                   specialty chemicals,
                                                   inorganic chemicals and
                                                   performance particles from
                                                   August 1999 to September
                                                   2001 and Vice President and
                                                   Chief Financial Officer of
                                                   PQ Corporation, the parent
                                                   of PQ Europe, from May 1995
                                                   until July 1999.

                    Stephen R. Olsen               Mr. Olsen has been Senior
                                                   Vice President--Marketing
                                                   and Corporate Development of
                                                   ISP and some of its
                                                   subsidiaries since June
                                                   2002. He was Senior Vice
                                                   President--Corporate
                                                   Development and Strategy of
                                                   ISP and some of its
                                                   subsidiaries, from September
                                                   2000 until June 2002 and was
                                                   a director of some of its
                                                   subsidiaries from June 2001
                                                   until September 2002. He was
                                                   President and Chief
                                                   Operating Officer of LL
                                                   Building Products Inc., one
                                                   of BMCA's subsidiaries, from
                                                   June 1999 to September 2000.
                                                   He was Vice President,
                                                   Corporate Development and
                                                   Vice President and General
                                                   Manager, Accessories and
                                                   Specialty Products, of BMCA
                                                   from May 1997 to October
                                                   1998.


                                       6



                    Steven E. Post                 Mr. Post has been Senior
                                                   Vice President--Operations
                                                   for Specialty Chemicals of
                                                   ISP since June 2001 and was
                                                   a director of one of its
                                                   subsidiaries from June 2001
                                                   until September 2002. He has
                                                   been President of ISP
                                                   Alginates Inc. since October
                                                   1999. He was employed as
                                                   President of Monsanto
                                                   Company's Kelco Alginates
                                                   division from January 1999
                                                   to October 1999. He served
                                                   as Vice President and
                                                   General Manager, Alginates
                                                   of Monsanto Company from
                                                   December 1997 to January
                                                   1999.

                    Lawrence Grenner               Mr. Grenner has been Senior
                                                   Vice President--R&D, Latin
                                                   America of ISP since May
                                                   2002. He was previously
                                                   Senior Vice
                                                   President--Marketing and
                                                   Product Development of ISP
                                                   and some of its subsidiaries
                                                   from June 2000 until May
                                                   2002. He was Vice President
                                                   and Business Unit Director,
                                                   Skin Care of ISP and some of
                                                   its subsidiaries from
                                                   January 1999 to June 2000
                                                   and Vice President,
                                                   Marketing-Personal Care of
                                                   ISP and some of its
                                                   subsidiaries from January
                                                   1997 to January 1999.

                    To the knowledge of ISP, during the last five years, none of
                    the foregoing directors or executive officers has been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors) or has been a party to a
                    civil proceeding of a judicial or administrative body of
                    competent jurisdiction resulting in a judgment, decree or
                    final order enjoining future violations of, or prohibiting
                    or mandating activities subject to, federal or state
                    securities laws, or a finding of any violations of such
                    laws.

                    DIRECTORS AND EXECUTIVE OFFICERS OF ISPH. Mr. Heyman is the
                    sole beneficial owner of ISPH common stock. The table below
                    sets forth for each of the executive officers of ISPH their
                    respective present principal occupation or employment, their
                    principal address, the name and principal business of the
                    corporation or other organization in which such occupation
                    or employment is conducted and the five-year employment
                    history of each such executive officer.

                                                   PRESENT PRINCIPAL OCCUPATION
                                                   OR EMPLOYMENT AND MATERIAL
                                                   POSITIONS HELD DURING THE
                    NAME                           PAST FIVE YEARS
                    --------------------------     -----------------------------

                    Samuel J. Heyman               Mr. Heyman is a director of
                                                   ISPH. Please also see
                                                   "Directors and Officers of
                                                   ISP."

                    Sunil Kumar                    Mr. Kumar is President,
                                                   Chief Executive "fficer and
                                                   a director of ISPH. Please
                                                   also see "Directors and
                                                   Officers of ISP."


                                       7



                                                   PRESENT PRINCIPAL OCCUPATION
                                                   OR EMPLOYMENT AND MATERIAL
                                                   POSITIONS HELD DURING THE
                    NAME                           PAST FIVE YEARS
                    --------------------------     -----------------------------

                    Richard A. Weinberg            Mr. Weinberg is an Executive
                                                   Vice President, General
                                                   Counsel and Secretary of
                                                   ISPH. Please also see
                                                   "Directors and Officers of
                                                   ISP."

                    Susan B. Yoss                  Ms. Yoss is the Executive
                                                   Vice President--Finance and
                                                   Treasurer of ISPH. Please
                                                   also see "Directors and
                                                   Officers of ISP."

                    To the knowledge of ISPH, during the last five years, none
                    of the foregoing directors or executive officers has been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors) or has been a party to a
                    civil proceeding of a judicial or administrative body of
                    competent jurisdiction resulting in a judgment, decree or
                    final order enjoining future violations of, or prohibiting
                    or mandating activities subject to, federal or state
                    securities laws, or a finding of any violations of such
                    laws.

ITEM 4.             TERMS OF THE TRANSACTION

Regulation M-A
Item 1004

       (a)(1)       TENDER OFFERS. Not applicable.

       (a)(2)(i)    TRANSACTION DESCRIPTION. The information set forth in the
                    Proxy Statement under the caption "Summary Term Sheet" is
                    incorporated herein by reference.

       (a)(2)(ii)   CONSIDERATION. The information set forth in the Proxy
                    Statement under the captions "Summary Term Sheet - What You
                    Will Be Entitled to Receive in The Merger," "Summary Term
                    Sheet - Our Position as to the Fairness of the Merger,"
                    "Special Factors - Recommendation of the Special Committee,"
                    "Special Factors - Recommendations of our Board of
                    Directors," "Special Factors - Special Committee's Position
                    as to Fairness of the Merger," "Special Factors - Mr. Heyman
                    and ISPH's Positions as to the Fairness of the Merger" and
                    "The Merger - Payment of Merger Consideration and Surrender
                    of Stock Certificates" is incorporated herein by reference.

       (a)(2)(iii)  REASONS FOR TRANSACTION. The information set forth in the
                    Proxy Statement under the captions "Summary Term Sheet -
                    Recommendation of Special Committee and our Board of
                    Directors," "Summary Term Sheet - Our Position as to the
                    Fairness of the Merger," "Summary Term Sheet - Mr. Heyman
                    and ISPH's Position as to the Fairness of the Merger,"
                    "Special Factors - Recommendation of the Special Committee,"
                    "Special Factors - Recommendations of our Board of
                    Directors," "Special Factors - Special Committee's Position
                    as to Fairness of the Merger," "Special Factors - Mr. Heyman
                    and ISPH's Positions as to the Fairness of the Merger" and
                    "Special Factors - Reasons for the Merger; Purpose and
                    Structure of the Merger" is incorporated herein by
                    reference.

       (a)(2)(iv)   VOTE REQUIRED FOR APPROVAL. The information set forth in the
                    Proxy Statement under the captions "Summary Term Sheet - The
                    Special Meeting," "Summary Term Sheet - The Merger
                    Agreement," "The Special Meeting - Voting Rights; Vote
                    Required for Approval" and "The Merger - Merger Agreement"
                    is incorporated herein by reference.


                                       8



       (a)(2)(v)    DIFFERENCES IN THE RIGHTS OF SECURITY HOLDERS. The
                    information set forth in the Proxy Statement under the
                    captions "Summary Term Sheet - What You Will Be Entitled to
                    Receive in the Merger," "Special Factors - Effects of the
                    Merger; Plans or Proposals After the Merger" and "The Merger
                    - Payment of Merger Consideration and Surrender of Stock
                    Certificates" is incorporated herein by reference.

       (a)(2)(vi)   ACCOUNTING TREATMENT. The information set forth in Proxy
                    Statements under the caption "The Merger - Accounting
                    Treatment" is incorporated herein by reference.

       (a)(2)(vii)  INCOME TAX CONSEQUENCES. The information set forth in the
                    Proxy Statement under the captions "Summary Term Sheet -
                    Material U.S. Federal Income Tax Consequences" and "Special
                    Factors - Material U.S. Federal Income Tax Consequences of
                    the Merger to our Stockholders" is incorporated herein by
                    reference.

       (c)          DIFFERENT TERMS. The information set forth in the Proxy
                    Statement under the captions "Summary Term Sheet - What You
                    Will Be Entitled to Receive in the Merger" and "The Merger -
                    Payment of Merger Consideration and Surrender of Stock
                    Certificates" is incorporated herein by reference.

       (d)          APPRAISAL RIGHTS. The information set forth in the Proxy
                    Statement under the captions "Summary Term Sheet - Appraisal
                    Rights " and "The Merger - Appraisal Rights" is incorporated
                    herein by reference.

       (e)          PROVISIONS FOR UNAFFILIATED SECURITY HOLDERS. None.

       (f)          ELIGIBILITY FOR LISTING OR TRADING. Not applicable.


ITEM 5.             PAST CONTACTS, TRANSACTIONS, NEGOTIATIONS AND AGREEMENTS

Regulation M-A
Item 1005


       (a)(1)       TRANSACTIONS WITH ISP. The information set forth in the
                    Proxy Statement under the captions "Special Factors -
                    Specified Relationships between ISP and Mr. Heyman" and
                    "Other Matters - Transactions in Capital Stock by Certain
                    Persons" is incorporated herein by reference.

       (a)(2)       TRANSACTIONS WITH OFFICERS, DIRECTORS AND AFFILIATES OF ISP.
                    The information set forth in the Proxy Statement under the
                    captions "Summary Term Sheet - Interests of Directors and
                    Executive Officers in the Merger," and "Special Factors -
                    Interests of Directors and Executive Officers in the
                    Merger," "Other Matters - Transactions in Capital Stock by
                    Certain Persons" and "Other Matters - Certain Transactions"
                    is incorporated herein by reference.

       (b)-(c)      SIGNIFICANT CORPORATE EVENTS; NEGOTIATIONS OR CONTRACTS. The
                    information set forth in the Proxy Statement under the
                    captions "Special Factors - Background of the Merger,"
                    "Special Factors - Interests of Directors and Executive
                    Officers in the Merger" and "Other Matters - Certain
                    Transactions" is incorporated herein by reference.

       (e)          AGREEMENTS INVOLVING THE SUBJECT COMPANY'S SECURITIES. The
                    information set forth in the Proxy Statement under the
                    captions "Summary Term Sheet - Interests of Directors and
                    Executive Officers in the Merger," "Special Factors -
                    Background of the Merger," "Special Factors - Interests of
                    Directors and Executive Officers in the Merger," "The
                    Special Meeting - Voting Rights; Vote Required for Approval"
                    and "Other Matters - Certain Transactions" is incorporated
                    herein by reference. The information set forth in Exhibits
                    (d)(1) and (d)(2) is incorporated herein by reference.


                                       9



ITEM 6.             PURPOSES OF THE TRANSACTION AND PLANS OR PROPOSALS

Regulation M-A
Item 1006

       (b)          USE OF SECURITIES ACQUIRED. The information set forth in the
                    Proxy Statement under the captions "Special Factors -
                    Reasons for the Merger; Purpose and Structure of the Merger"
                    and "Special Factors - Effects of the Merger; Plans or
                    Proposals After the Merger" is incorporated herein by
                    reference.

      (c)(1)-(8)    PLANS. The information set forth in the Proxy Statement
                    under the captions "Summary Term Sheet - The Merger,"
                    "Summary Term Sheet - Interests of Directors and Executive
                    Officers in the Merger," "Summary Term Sheet - The Merger
                    Agreement," "Special Factors - Background of the Merger,"
                    "Special Factors - Effects of the Merger; Plans or Proposals
                    After the Merger," "Special Factors - Interests of Directors
                    and Executive Officers in the Merger" and "Other Matters -
                    Certain Transactions" is incorporated herein by reference.

ITEM 7.             PURPOSES, ALTERNATIVES, REASONS AND EFFECTS

Regulation M-A
Item 1013  (a)      PURPOSES. The information set forth in the Proxy Statement
                    under the captions "Special Factors - Recommendations of the
                    Special Committee," "Special Factors - Recommendations of
                    our Board of Directors," "Special Factors - Background of
                    the Merger" and "Special Factors - Reasons for the Merger;
                    Purpose and Structure of the Merger" is incorporated herein
                    by reference.

       (b)          ALTERNATIVES. The information set forth in the Proxy
                    Statement under the captions "Special Factors - Background
                    of the Merger," "Special Factors - Recommendations of the
                    Special Committee," "Special Factors - Recommendations of
                    our Board of Directors" and "Special Factors - Reasons for
                    the Merger; Purpose and Structure of the Merger" is
                    incorporated herein by reference.

       (c)          REASONS. The information set forth in the Proxy Statement
                    under the captions "Summary Term Sheet - Opinion of Lehman
                    Brothers Inc.," "Summary Term Sheet - Our Position as to the
                    Fairness of the Merger," "Summary Term Sheet - Mr. Heyman
                    and ISPH's Position as to the Fairness of the Merger,"
                    "Special Factors - Background of the Merger," "Special
                    Factors - Special Committee's Position as to Fairness of the
                    Merger," "Special Factors - Mr. Heyman and ISPH's Positions
                    as to the Fairness of the Merger," "Special Factors -
                    Opinion of Lehman Brothers" and "Special Factors - Reasons
                    for the Merger; Purpose and Structure of the Merger" is
                    incorporated herein by reference.

       (d)          EFFECTS. The information set forth in the Proxy Statement
                    under the captions "Summary Term Sheet - What You Will Be
                    Entitled to Receive in the Merger," "Summary Term Sheet -
                    Opinion of Lehman Brothers Inc.," "Summary Term Sheet -
                    Interests of Directors and Executive Officers in the
                    Merger," "Summary Term Sheet - Material U.S. Federal Income
                    Tax Consequences," "Summary Term Sheet - Appraisal Rights,"
                    "Special Factors - Background of the Merger," "Special
                    Factors - Opinion of Lehman Brothers," "Special Factors -
                    Reasons for the Merger; Purpose and Structure of the
                    Merger," "Special Factors - Effects of the Merger; Plans or
                    Proposals After the Merger," "Special Factors - Material
                    U.S. Federal Income Tax Consequences of the Merger to our
                    Stockholders," "Special Factors - Litigation," "The Merger -
                    Payment of Merger Consideration and Surrender of Stock
                    Certificates," "The Merger - Appraisal Rights" and "The
                    Merger - The Merger Agreement" is incorporated herein by
                    reference.


                                       10


ITEM 8.             FAIRNESS OF THE TRANSACTION

Regulation M-A
Item 1014

       (a)-(b)      FAIRNESS; FACTORS CONSIDERED IN DETERMINING FAIRNESS. The
                    information set forth in the Proxy Statement under the
                    captions "Summary Term Sheet - Recommendations of the
                    Special Committee and our Board of Directors," "Summary Term
                    Sheet - Opinion of Lehman Brothers Inc.," "Summary Term
                    Sheet - Our Position as to the Fairness of the Merger,"
                    "Summary Term Sheet - Mr. Heyman and ISPH's Position as to
                    the Fairness of the Merger," "Special Factors - Background
                    of the Merger,O "Special Factors - Recommendations of the
                    Special Committee," "Special Factors - Recommendations of
                    our Board of Directors," "Special Factors - Special
                    Committee's Position as to Fairness of the Merger," "Special
                    Factors - Mr. Heyman and ISPH's Positions as to the Fairness
                    of the Merger," "Special Factors - Opinion of Lehman
                    Brothers," "Special Factors - ISP's Forecasts" and "Special
                    Factors - Reasons for the Merger; Purpose and Structure of
                    the Merger" is incorporated herein by reference.

       (c)          APPROVAL OF SECURITY HOLDERS. The information set forth in
                    the Proxy Statement under the captions "Summary Term Sheet -
                    The Special Meeting," "Summary Term Sheet - The Merger
                    Agreement," "Special Factors - Mr. Heyman and ISPH's
                    Positions as to the Fairness of the Merger," "The Special
                    Meeting - Voting Rights; Vote Required for Approval" and
                    "The Merger - The Merger Agreement" is incorporated herein
                    by reference.

       (d)          UNAFFILIATED REPRESENTATIVE. The information set forth in
                    the Proxy Statement under the captions "Summary Term Sheet -
                    Recommendations of the Special Committee and our Board of
                    Directors," "Summary Term Sheet - Our Position as to the
                    Fairness of the Merger," "Summary Term Sheet - Mr. Heyman
                    and ISPH's Position as to the Fairness of the Merger,"
                    "Special Factors - Background of the Merger," "Special
                    Factors - Recommendation of the Special Committee," "Special
                    Factors - Recommendations of our Board of Directors,"
                    "Special Factors - Special Committee's Position as to
                    Fairness of the Merger," "Special Factors - Mr. Heyman and
                    ISPH's Positions as to Fairness of the Merger" and "Special
                    Factors - Reasons for the Merger; Purpose and Structure of
                    the Merger" is incorporated herein by reference.

       (e)          APPROVAL OF DIRECTORS. The information set forth in the
                    Proxy Statement under the captions "Summary Term Sheet -
                    Recommendations of the Special Committee and our Board of
                    Directors," "Summary Term Sheet - Our Position as to the
                    Fairness of the Merger," "Summary Term Sheet - Mr. Heyman
                    and ISPH's Position as to the Fairness of the Merger,"
                    "Special Factors - Background of the Merger," "Special
                    Factors - Recommendations of the Special Committee,"
                    "Special Factors - Recommendations of our Board of
                    Directors" and "Special Factors - Mr. Heyman and ISPH's
                    Positions as to the Fairness of Merger" is incorporated
                    herein by reference.

       (f)          OTHER OFFERS. Not applicable.


                                       11



ITEM 9.             REPORTS, OPINIONS, APPRAISALS AND NEGOTIATIONS

Regulation M-A
Item 1015

       (a)-(c)      REPORT, OPINION OR APPRAISAL; PREPARER AND SUMMARY OF THE
                    REPORT, OPINION OR APPRAISAL; AVAILABILITY OF DOCUMENTS. The
                    information set forth in the Proxy Statement under the
                    captions "Summary Term Sheet - Opinion of Lehman Brothers
                    Inc.," "Summary Term Sheet - Our Position as to the Fairness
                    of the Merger," "Special Factors - Background of the
                    Merger," "Special Factors - Opinion of Lehman Brothers,"
                    "Special Factors -Special Committee's Position as to
                    Fairness of the Merger," "Special Factors - Mr. Heyman and
                    ISPH's Positions as to the Fairness of the Merger," "Special
                    Factors - ISP's Forecasts" and "Special Factors - Mr. Heyman
                    and ISPH's Positions as to the Fairness of the Merger," is
                    incorporated herein by reference. The full text of the
                    written opinion of Lehman Brothers Inc., dated November 8,
                    2002, is attached to the Proxy Statement as Annex B thereto
                    and is incorporated herein by reference. The written
                    materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on November 6, 2002 are set forth as
                    Exhibits (c)(2) through (c)(6) hereto and are incorporated
                    herein by reference.

ITEM 10.            SOURCE AND AMOUNTS OF FUNDS OR OTHER CONSIDERATION

Regulation M-A
Item 1007

       (a)-(d)      SOURCE OF FUNDS; CONDITIONS; EXPENSES; BORROWED FUNDS. The
                    information set forth in the Proxy Statement under the
                    captions "The Merger - Fees and Expenses of the Merger" and
                    "The Merger - Financing of the Merger" is incorporated
                    herein by reference.


                                       12



ITEM 11.            INTEREST IN SECURITIES OF THE SUBJECT COMPANY

Regulation M-A
Item 1008

       (a)          SECURITIES OWNERSHIP. The information set forth in the Proxy
                    Statement under the captions "Summary Term Sheet - Interests
                    of Directors and Executive Officers in the Merger," "Special
                    Factors - Background of the Merger," "Special Factors -
                    Interests of Directors and Executive Officers in the
                    Merger," "The Special Meeting - Voting Rights; Vote Required
                    for Approval" and "Other Matters - Security Ownership of
                    Specified Beneficial Owners and Management" is incorporated
                    herein by reference.

       (b)(1)-(5)   SECURITIES TRANSACTIONS. The information set forth in the
                    Proxy Statement under the caption "Other Matters -
                    Transactions in Capital Stock by Certain Persons" is
                    incorporated herein by reference.

ITEM 12.            THE SOLICITATION OR RECOMMENDATIONS

Regulation M-A
Item 1012

       (d)          INTENT TO TENDER OR VOTE IN A GOING-PRIVATE TRANSACTION. The
                    information set forth in the Proxy Statement under the
                    captions "Summary Term Sheet - Interests of Directors and
                    Executive Officers in the Merger," "Special Factors -
                    Interests of Directors and Executive Officers in the Merger"
                    "Special Factors - Specified Relationships Between ISP and
                    Mr. Heyman" and "The Special Meeting - Voting Rights; Vote
                    Required for Approval" is incorporated herein by reference.

       (e)          RECOMMENDATIONS OF OTHERS. The information set forth in the
                    Proxy Statement under the captions "Summary Term Sheet -
                    Recommendations of the Special Committee and our Board of
                    Directors," "Summary Term Sheet - Our Position as to the
                    Fairness of the Merger," "Summary Term Sheet - Mr. Heyman
                    and ISPH's Position as to the Fairness of the Merger,"
                    "Special Factors - Background of the Merger," "Special
                    Factors - Recommendation of the Special Committee," "Special
                    Factors - Recommendations of our Board of Directors,"
                    "Special Factors - Mr. Heyman and ISPH's Positions as to the
                    Fairness of the Merger" and "Special Factors - Reasons for
                    the Merger; Purpose and Structure of the Merger" is
                    incorporated herein by reference.

ITEM 13.            FINANCIAL STATEMENTS

Regulation M-A
Item 1010

       (a)          FINANCIAL INFORMATION. The information set forth in the
                    Proxy Statement under the caption "Summary Term Sheet -
                    Selected Consolidated Financial Data of ISP" is incorporated
                    herein by reference.

       (b)          PRO FORMA INFORMATION. None.

ITEM 14.            PERSONS/ASSETS, RETAINED, EMPLOYED, COMPENSATED OR USED

Regulation M-A
Item 1009

       (a)-(b)      SOLICITATIONS OR RECOMMENDATIONS; EMPLOYEES AND CORPORATE
                    ASSETS. The information set forth in the Proxy Statement
                    under the captions "Summary Term Sheet - Our Position as to
                    the Fairness of the Merger," "Summary Term Sheet - Opinion
                    of


                                       13


                    Lehman Brothers Inc.," "Special Factors - Background of the
                    Merger," "Special Factors - Opinion of Lehman Brothers,"
                    "Special Factors - Special Committee's Position as to
                    Fairness of the Merger," "Special Factors - Mr. Heyman and
                    ISPH's Positions as to the Fairness of the Merger," "The
                    Special Meeting - Solicitation of Proxies," "The Merger -
                    Fees and Expenses of the Merger" and "The Merger - Financing
                    of the Merger" is incorporated herein by reference.

ITEM 15.            ADDITIONAL INFORMATION

Regulation M-A
Item 1011

       (b)          OTHER MATERIAL INFORMATION. The information set forth in the
                    Proxy Statement, including all annexes and exhibits thereto,
                    is incorporated herein by reference.

ITEM 16.            EXHIBITS

Regulation M-A
Item 1016

       (a)          Amendment No. 1 to the Preliminary Proxy Statement filed
                    with the Securities and Exchange Commission on November 27,
                    2002 (incorporated herein by reference to Amendment No. 1 to
                    the Preliminary Proxy Statement).

       (b)          None.

       (c)(1)       Opinion of Lehman Brothers Inc. attached as Annex B to the
                    Preliminary Proxy Statement (incorporated herein by
                    reference to Amendment No. 1 to the Preliminary Proxy
                    Statement).

       (c)(2)       Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on September 18, 2002.

       (c)(3)       Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on September 27, 2002.

       (c)(4)       Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on October 21, 2002.

       (c)(5)       Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on November 6, 2002 (previously filed).

       (c)(6)       Materials presented by Lehman Brothers Inc. to the Board
                    of Directors of ISP on November 8, 2002.

       (d)(1)       Agreement and Plan of Merger, dated as of November 8, 2002
                    by and among ISP and ISPH attached as Annex A to Amendment
                    No. 1 to the Preliminary Proxy Statement (incorporated
                    herein by reference to Amendment No. 1 to the Preliminary
                    Proxy Statement).

       (d)(2)       Stockholder Voting Agreement, dated November 8, 2002,
                    between ISP and Samuel J. Heyman attached as Annex C to
                    Amendment No. 1 to the Preliminary Proxy Statement
                    (incorporated herein by reference to Amendment No. 1 to the
                    Preliminary Proxy Statement).

       (e)          None.

       (f)          Section 262 of the General Corporation Law of the State of
                    Delaware attached as Annex D to Amendment No. 1 to the
                    Preliminary Proxy Statement (incorporated herein by
                    reference to Amendment No. 1 to the Preliminary Proxy
                    Statement).

       (g)          None.


                                       14


                                    SIGNATURE

     After due inquiry and to the best of their knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.

Dated:  January 9, 2003

                     INTERNATIONAL SPECIALTY PRODUCTS INC.

                     By:        /s/ SUNIL KUMAR
                              ------------------------------------
                              Name:    Sunil Kumar
                              Title:   President and Chief Executive Officer


                     SAMUEL J. HEYMAN

                                /s/ SAMUEL J. HEYMAN
                              ------------------------------------


                     INTERNATIONAL SPECIALTY PRODUCTS
                     HOLDINGS INC.

                     By:        /s/ SUNIL KUMAR
                              ------------------------------------
                              Name:    Sunil Kumar
                              Title:   President and Chief Executive Officer


                                       15


                                  EXHIBIT INDEX

EXHIBIT NO.         DESCRIPTION



(a)                 Amendment No. 1 to the Preliminary Proxy Statement filed
                    with the Securities and Exchange Commission on November 27,
                    2002 (incorporated herein by reference to Amendment No. 1 to
                    the Preliminary Proxy Statement).

(b)                 None.

(c)(1)              Opinion of Lehman Brothers Inc. attached as Annex B to
                    Amendment No. 1 to the Preliminary Proxy Statement
                    (incorporated herein by reference to Amendment No. 1 to the
                    Preliminary Proxy Statement).

(c)(2)              Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on September 18, 2002.

(c)(3)              Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on September 27, 2002.

(c)(4)              Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on October 21, 2002.

(c)(5)              Materials presented by Lehman Brothers Inc. to the ISP
                    Special Committee on November 6, 2002 (previously filed).

(c)(6)              Materials presented by Lehman Brothers Inc. to the Board of
                    Directors of ISP on November 8, 2002.

(d)(1)              Agreement and Plan of Merger, dated as of November 8, 2002
                    by and among ISP and ISPH attached as Annex A to Amendment
                    No. 1 to the Preliminary Proxy Statement (incorporated
                    herein by reference to Amendment No. 1 to the Preliminary
                    Proxy Statement).

(d)(2)              Stockholder Voting Agreement, dated November 8, 2002,
                    between ISP and Samuel J. Heyman attached as Annex C to
                    Amendment No. 1 to the Preliminary Proxy Statement
                    (incorporated herein by reference to Amendment No. 1 to the
                    Preliminary Proxy Statement).

(e)                 None.

(f)                 Section 262 of the General Corporation Law of the State of
                    Delaware attached as Annex D to Amendment No. 1 to the
                    Preliminary Proxy Statement (incorporated herein by
                    reference to Amendment No. 1 to the Preliminary Proxy
                    Statement).

(g)                 None.


                                       16