Tuticorin Alkali Chemicals and Fertilisers Limited was incorporated in December, 1971. The Company is a member of the SPIC (Southern Petro Industries Corporation) Corporate Group. TAC manufactures all grades of soda ash and ammonium chloride (fertiliser grade). These plants were installed based on the toyo soda dual process in technical collaboration with Hitachi Zosen Corporation, Japan. The salient features of the process adopted are 100% utilisation of chloride and substantial reduction in the effluents discharged from the plant, making the plant eco-friendly.