Durgapur Chemicals Ltd. (DCL) was incorporated on 31st July 1963 as a public sector company wholly owned by the Government of West Bengal as part of an initiative to develop Durgapur as an industrial hub of West Bengal. DCL started commercial production of Phenol, phthalic anhydride, Monochloro Benzene, Pentachloro Phenol, Caustic Soda, Chlorine and Hydrochloric Acid in the year 1968. The company was planned as a forward integration for another GoWB owned company, Durgapur Projects Limited (DPL), set up primarily to supply power, water, coke and coke oven gas to industrial units in the Durgapur area. It was envisaged that the company would utilize the benzene and naphthalene produced as by-products of DPL’s coke oven batteries to feed as raw material to our phenol and phthalic anhydride ..