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                     International Specialty Products Inc.


               (Name of Registrant as Specified In Its Charter)

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FOR IMMEDIATE RELEASE         Contact:
---------------------
Friday, November 8            Neal E. Murphy
                              Senior Vice President and Chief Financial Officer
                              International Specialty Products Inc.
                              (973) 872-4200

                    INTERNATIONAL SPECIALTY PRODUCTS INC.
              SIGNS MERGER AGREEMENT IN GOING PRIVATE TRANSACTION

         WAYNE, NJ - NOVEMBER 8, 2002 - International Specialty Products Inc.
(NYSE: ISP) announced today that it has signed a merger agreement with
International Specialty Products Holdings Inc. ("ISPH"), a corporation formed
by ISP's chairman and majority stockholder, Samuel J. Heyman. ISP's Board of
Directors, upon the unanimous recommendation of a Special Committee comprised
of directors who are not officers of ISP, has determined that the merger is
fair to ISP's public shareholders and has approved and declared advisable the
merger agreement. Lehman Brothers Inc. acted as advisor to the Special
Committee of the Board of Directors.

         Under the agreement, ISPH will merge with ISP and the holders of
ISP's publicly traded shares will be entitled to receive $10.30 per share in
cash. Completion of the merger is subject to certain closing conditions,
including approval by holders of a majority of ISP's shares and holders of a
majority of the votes cast by holders of shares not beneficially owned by Mr.
Heyman or the directors or officers of ISP.

         The transaction has a value of approximately $130 million. Mr. Heyman
currently beneficially owns approximately 80.9% of ISP's outstanding shares of
stock.

                 ADDITIONAL INFORMATION AND WHERE TO FIND IT.

         In connection with the proposed transaction, ISP will file a proxy
statement with the SEC. Investors and security holders are advised to read the
proxy statement when it becomes available, because it will contain important
information. Investors and security holders may obtain a free copy of the
proxy statement (when available) and other documents filed by ISP with the SEC
at the SEC's Web site at http://www.sec.gov. Free copies of the proxy
statement, once available, and the company's other filings with the SEC may
also be obtained from ISP by directing a request to ISP Shareholder Relations
Department, 1361 Alps Road, Wayne, New Jersey 07470, Telephone:
1-800-526-5315. ISP, its directors and certain executive officers may be
deemed under the rules of the SEC to be "participants in the solicitation" of
proxies from the security holders of ISP in favor of the transaction.
Information about the directors and executive officers of ISP and their
ownership of ISP common stock is set forth in the proxy statement, dated April
12, 2002, for ISP's 2002 annual meeting of stockholders, as filed with the SEC
on Schedule 14A. Investors and security holders of ISP may obtain additional
information regarding the interests of the "participants in the solicitation"
by reading the proxy statement relating to the transaction when it becomes
available.

                              * * *

International Specialty Products Inc. is a leading multinational manufacturer
of specialty chemicals and mineral products.

         This press release contains forward looking statements, including,
without limitation, statements relating to ISP's plans, strategies,
objectives, expectations, goals and intentions, which are made in a manner
consistent with the safe harbor provisions of the U.S. Private Securities
Litigation Reform Act of 1995. These forward looking statements involve known
and unknown risks, uncertainties and other factors that may cause the actual
results, performance or achievements of ISP to be materially different from
any future results, performance or achievements expressed or implied by such
forward looking statements. These factors include: general economic, capital
market and business conditions; risks arising from litigation or similar
proceedings; and the risks and uncertainties inherent in the satisfaction of
the closing conditions to the merger and the consummation of the merger, as
well as those factors discussed in the filings of ISP and its subsidiaries
with the Securities and Exchange Commission, which are incorporated in this
press release by reference. ISP undertakes no obligation, and expressly
disclaims any obligation, to publicly update or revise any forward looking
statement, whether as a result of new information, future events or otherwise.