Description OCI Chemical primarily produces soda ash from its mining and manufacturing operations in Wyoming and Alabama. Soda ash is used in the manufacture of glass, soaps and detergents, pulp and paper, and other chemical products. The company also makes sodium percarbonate, widely used in detergents and personal care products, and hydrogen peroxide. Established as Stauffer Chemical in 1962, the company mines primarily in the Green River Basin of southwestern Wyoming to recover the trona from which its soda ash is produced. OCI Chemical is an operating subsidiary of South Korean company OCI Company (formerly known as DC Chemical).