• DCM Shriram Consolidated Limited

Caustic Soda

Caustic Soda is a basic product very widely used in diverse industrial sectors, either as a raw material or as an auxiliary chemical. As mentioned ealier, it is produced along with chlorine. It is mainly used in the manufacture of pulp and paper, newsprint, viscose yarn, staple fiber, Aluminum, cotton, textiles, toilet and laundry soaps, detergents, dyestuffs, drugs and pharmaceuticals, vanaspati, petroleum refining. Caustic soda is produced in two forms - lye and solids. Solids can be in the form of flakes or granules.
Three technologies are available world over for production of caustic soda – mercury cell process, diaphragm process, and membrane cell process. All three processes are in use in India, although there is strong trend indicating a shift towards the environmentally better membrane cell process. Caustic soda is manufactured through more environmentally friendly membrane technology.