WILMINGTON, DE, September 15, 2006 . . . The Paper Technologies and Venture Group of Hercules Incorporated (NYSE: HPC) will initiate a price increase for Sodium formate of 4 cents per pound for all grades, effective October 1, 2006, or as agreements allow. Continuing escalation of raw material, energy and transportation costs are driving this adjustment.

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Hercules Incorporated manufactures and markets chemical specialties globally for making a variety of products for home, office and industrial markets. For more information, visit the Hercules website at www.herc.com.

Contact:
Catherine (Katy) Abernathy
Hercules Paper Technologies and Ventures
Global Marketing Communications Manager
904-256-0333 (phone)