where can i buy sodium metabisulfite locally in kolkata india
Sodium metabisulfite or sodium pyrosulfite is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent.
Uses
Food additive
It is used as a preservative and antioxidant in food and is also known as E223.