The Petroleum Additives business of Chemtura Corporation (NYSE/Euronext:CHMT) is announcing a price increase on its DPA in all packages of 10 cents per kilo effective Sept. 15, 2013 or as contracts allow. This price increase is to compensate for continuous increases in raw material and manufacturing costs. Diphenylamine (DPA) is a chemical widely used as an antioxidant for lubricants, propellants, and explosives. It is also an important intermediate in the dye, agrochemical, pharmaceutical, and rubber and plastic additive industries. Petroleum Additives Chemtura’s Petroleum Additives business comprises a broad portfolio of lubricant additives, synthetic basestocks and synthetic finished lubricants used in a wide range of applications and industries. Additional information concerning Petroleum Additives is available at www.chemtura.com. Chemtura Corporation Chemtura Corporation, with 2012 sales of $2.6 billion (1), is a global manufacturer and marketer of specialty chemicals, agrochemicals and pool, spa and home care products. Additional information concerning Chemtura is available at www.chemtura.com. (1) 2012 net sales of $2.6 billion reflects discontinued operations treatment for the sale of Chemtura's plastic antioxidants business.