It is used as a preservative and antioxidant in food
It is used bleaching agent in the production of coconut cream
It is used to chemically reduce hexavalent chromium to trivalent chromium which can then be precipitated and removed from an aqueous waste stream. It also remove chloramine from drinking water after treatment.
It is used as a bleaching and dechlorination agent. It bleaches the leather and make the leather soft, well developed etc.
It is used to precipitate gold from auric acid, as an excipient in some tablets such as paracetamol, etc