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Elements and Compounds
Salt (Sodium Chloride)

What is the purification of NaCl?

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April 12, 2013 11:50AM

An aqueous sodium chloride solution for use in production of caustic soda in an electrolytic cell having a cation exchange membrane is purified by adding to said solution a chemical reagent for precipitation separation of impurities remove silica through co-precipitation with a slurry of the precipitates of impurities which are circulated through said solution.