Exhibit 99.2


STATEMENT UNDER OATH OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL
OFFICER REGARDING FACTS AND CIRCUMSTANCES RELATING TO EXCHANGE ACT FILINGS

I , John A. Shaw, Executive Vice President and Chief Financial Officer, state
and attest that:

(1)      To the best of my knowledge, based upon a review of the covered reports
         of Cabot Corporation, and, except as corrected or supplemented in a
         subsequent covered report:

-        no covered report contained an untrue statement of a material fact as
         of the end of the period covered by such report (or in the case of a
         report on Form 8-K or definitive proxy materials, as of the date on
         which it was filed); and

-        no covered report omitted to state a material fact necessary to make
         the statements in the covered report, in light of the circumstances
         under which they were made, not misleading as of the end of the period
         covered by such report (or in the case of a report on Form 8-K or
         definitive proxy materials, as of the date on which it was filed).

(2)      I have reviewed the contents of this statement with the Company's audit
         committee.

(3)      In this statement under oath, each of the following, if filed on or
         before the date of this statement, is a "covered report":

         -        Annual Report on Form 10-K for Fiscal Year ended September 30,
                  2001 as filed with the U.S. Securities and Exchange Commission
                  on December 20, 2001;

         -        all reports on Form 10-Q, all reports on Form 8-K and all
                  definitive proxy materials of Cabot Corporation filed with the
                  Commission subsequent to the filing of the Form 10-K
                  identified above; and

         -        any amendments to any of the foregoing.

                                             Subscribed and sworn to before
                                             me this 14th day of August 2002.

/s/ John A. Shaw                             /s/ Aji Kron
----------------------------                 ---------------------------------
John A. Shaw                                 Notary Public
Executive Vice President
and Chief Financial Officer
                                             My Commission Expires:
Dated August 14, 2002                        12 January 2007


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