Allied-Signal, Baton Rouge, La. 100,000 Ambar, Manistee, Mich. 300,000 Dow, Ludington, Mich. 700,000 Great Lakes, Geismar, La. 150,000 General, Brooks, Alberta 7,000 General, Drumheller, Alberta 12,000 General, Amherstburg, Ont. Tetra Technologies , Amboy, Calif. 25,000 Tetra Technologies, Lake Charles, La. 170,000 Tetra Technologies, Norco, La. 90,000 Tetra Technologies, Parkersburg, W.Va.
Product mix varies between producers.
Commercial production in the US is through refining of natural brine or by neutralization of byproduct hydrochloric acid with limestone. Ambar has been running its liquid calcium chloride recovery facility at Manistee since September 1996 and began production of dry product at the site in November 1997. The plant uses a coproduct stream from an adjacent Martin Marietta Magnesia Specialties facility as feedstock. Cargill sold its calcium and sodium chloride facilities at Amboy, Calif., to Tetra Technologies in August 1998. Hill Brothers Chemical Company buys calcium chloride solution from National Chloride and Magnesium Corporation of America and processes it into finished product.