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 Form  10-Q  for the  period  ended  September  30,  2008 as  filed  with  the
Securities and Exchange  Commission on the date hereof (the "Report"),  I, David
Lilley, Chairman 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 and Chief Executive Officer
October 30, 2008


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.