EX-32.(I)(A) 6 a2154729zex-32_ia.htm EX-32.(I)(A)
QuickLinks -- Click here to rapidly navigate through this document


Exhibit (32)(i)(a)

STATEMENT OF CHIEF EXECUTIVE OFFICER

        The undersigned chief executive officer of Great Lakes Chemical Corporation hereby certifies that this Annual Report on Form 10-K as amended for the year ended December 31, 2004 ("Periodic Report") fully complies with the requirements of section 13(a) or 15(d) of the Securities and Exchange Act of 1934 (15 U.S.C. 78m) and that information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of Great Lakes Chemical Corporation.


 
 
/s/  JOHN J. GALLAGHER III      
John J. Gallagher III, Chief Executive Officer
    Dated: April 1, 2005



QuickLinks