The excessive exertion in the present day world has created lot of health problems in humans such as hyper tension. Sodium is responsible for increasing nerve impulses and low sodium salt, primarily a mixture of sodium chloride and potassium chloride is useful for those persons who have been advised to eat less sodium on account of medical ailments. Realizing the demand of low sodium salt which is commonly prepared by homogeneous mixing of NaCl and KCl, CSIR-CSMCRI has developed a cost effective process for the production of low sodium salt using the bittern, the mother liquor left out after production of salt in solar salt works. The process involves the desulphatation of bittern using cheap agents like distiller waste liquor of soda ash plants and processing the desulphated bittern for the recovery of low sodium salt via the intermediate product carnallite. The low sodium salt of required specifications can be made by controlling the ionic composition of desulphated bittern during its processing.

The process comprises of desulphatation of bittern (by-product of salt industry), evaporation of bittern in solar pans and processing of solid mixture with water to produce a mixture of sodium and potassium chlorides and optionally preparing “free flowing” and iodized salt or Potassium Chloride, by known techniques.