WILMINGTON, DE, JULY 16, 2008 . . . Hercules Incorporated (NYSE: HPC) today announced that the teleconference call for the second quarter 2008 earnings has been cancelled given the pending transaction with Ashland Inc. The earnings release will occur as previously announced as set forth below.

Earnings Release: July 21, 2008 – After the stock market closes.
Distribution: Business Wire and Hercules' website at www.herc.com.

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Hercules 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.