GREAT LAKES INCREASES PRICES OF ALL BROMINE AND PHOSPHORUS-BASED FLAME RETARDANTS

INDIANAPOLIS, INDIANA—Great Lakes Chemical Corporation (NYSE:GLK) today announced it will increase prices worldwide by 20 percent for all bromine-based flame retardants and by USD 0.35/kg for all phosphorus-based flame retardants within its Polymer Additives division, effective for shipments beginning January 1, 2005, or as contracts allow. These price increases are in addition to all other increases previously announced.

The company stated that the new pricing is necessary due to the unprecedented and rapidly increasing costs of key raw materials, energy products and logistics, fast growing end-use demand, and significant availability concerns for certain key feed stocks. Additionally, this pricing action is necessary to raise the profitability levels to a point where investment is viable.

Great Lakes is the world’s leading producer of flame retardants with an aggressive commitment to technological innovation and product development. Offering the largest and broadest portfolio of flame retardants, Great Lakes products include bromine, phosphorus, and antimony-based flame retardants, other FR synergists and smoke suppressants. These products protect against fire in plastics for consumer applications such as automotive, electrical, building materials, and furnishings. For more information about these product lines please visit the Great Lakes Flame Retardants website at www.fr.greatlakes.com.

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Great Lakes Chemical Corporation

Great Lakes Chemical Corporation is the world’s leading producer of certain specialty chemicals for such applications as water treatment, household cleaners, flame retardants, polymer stabilizers, fire suppressants, and performance chemicals. The stock of the company is traded on the New York Stock Exchange. For more information, please visit the Great Lakes web site at www.greatlakes.com.