Grasim set up a rayon grade caustic soda unit at Nagda in 1972 with the intention of achieving a reliable and economical supply of rayon grade caustic soda, an important raw material in VSF production. With an initial capacity of 33,000 tpa, Grasim's caustic soda unit has grown to 440,500 tpa, making it the second-largest caustic soda manufacturer in India.
As one of the leading caustic soda manufacturers in India, Grasim uses cost-effective membrane cell technology and is 100 per cent self-sufficient in power. For gainful utilisation of chlorine, the unit has expanded its operations with the production of stable bleaching powder (SBP) used in water purification, sanitation and as a bleaching agent; poly aluminium chloride (PAC) used in water treatment, paper sizing and effluent treatment; and chloro sulphonic acid, used in vinyl sulphate, the raw material for dyes and intermediates, saccharin, drugs and pharmaceuticals, etc
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