Ashland Inc. and Hercules Inc. have announced that they have entered into a definitive merger agreement under which Ashland will acquire all of the outstanding shares of Hercules for $18.60 per share in cash and 0.093 of a share of Ashland common stock for each share of Hercules common stock. The total transaction value comes to approximately $3.3 billion, or $23.01 per Hercules share based on Ashland’s July 10 closing stock price and including $0.7 billion of net assumed debt. The transaction is expected to close by the end of calendar 2008.

With sales in more than 100 countries, Ashland is a manufacturer of specialty chemicals, a leading distributor of chemicals and plastics, and a provider of automotive lubricants, car-care products and quick-lube services. Hercules is a leader in specialty additives and ingredients that modify the physical properties of water-based systems, and is one of the world’s leading suppliers of specialty chemicals to the pulp and paper industry.

Upon closing the transaction, Ashland will have pro forma combined revenue for the 12 months ended March 31, 2008, of more than $10 billion, including approximately $3.5 billion generated outside North America. For the same period, Ashland generated earnings before interest, taxes, depreciation and amortization (EBITDA) of $365 million, while Hercules reported ongoing EBITDA of $392 million. Specialty chemicals, which on a pro forma basis represent approximately 75% of total EBITDA, will serve as Ashland’s primary platform for future growth.

Ashland Chairman and Chief Executive Officer James J. O’Brien said, “The acquisition of Hercules fulfills our objective to become a leading specialty chemicals company. It creates a defined core for Ashland composed of three specialty chemical businesses with strong market positions and promising global growth potential: specialty additives and ingredients, paper and water technologies, and specialty resins. In addition, we expect our financial profile to be enhanced significantly through reduced earnings volatility, improved profitability and stronger cash flow generation.”

Hercules President and Chief Executive Officer Craig A. Rogerson said, “We are enthusiastic about the opportunity to combine Hercules with Ashland. Our companies share proud and similar histories of nearly 100 years of innovation, dedication, and service. Hercules shareholders will receive a significant premium over the current trading price for their shares and, through their ownership of Ashland shares, the opportunity to participate in the upside potential of the combined company. We look forward to working with Ashland to bring these two great companies together.”

For more information, visitwww.ashland.comorwww.herc.com.