Bleaching powder is used for bleaching, whitening, sterilisation, disinfection and environmental hygiene. The use of Bleaching Powder are in the field of water purification, disinfection of swimming pools, control of epidemics, sanitation and general hygiene, aquaculture and shrimp culture, sewage disposal and industrial uses, viz. Carpet Industry, Textile Industry, Paper Industry, Soft drink bottling / Food Industry, Leather Industry, Manufacture of sodium silicate, Sugar Mill, Industrial effluent containing cyanides etc.