EXHIBIT 32.1

                           CERTIFICATIONS PURSUANT TO
                             18 U.S.C. SECTION 1350



In connection with the Quarterly Report of Cytec Industries Inc. (the "Company")
on Form10-Q for the period ended September 30, 2006 as filed with the Securities
and Exchange Commission on the date hereof (the "Report"), I, David Lilley,
Chairman, President and Chief Executive Officer of the Company, certify,
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that:

     (1)  The Report fully  complies with the  requirements  of section 13(a) or
          15(d) of the Securities Exchange Act of 1934; and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
          material respects,  the financial  condition and results of operations
          of the Company.


/s/ David Lilley
- ----------------
David Lilley
Chairman, President and
Chief Executive Officer
November 2, 2006


This certification is being furnished to the Securities and Exchange Commission
as an Exhibit to the Form 10-Q and shall not be considered filed as part of the
Form 10-Q.