Sodium Metabisulphite

Sodium metabisulphite (also known as sodium metabisulfite or sodium pyrosulfite) is a chemical compound with the formula Na₂S₂O₅. It is commonly used across various industries for its properties as a reducing agent, preservative, and antioxidant. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent. When dissolved in water it forms sodium bisulfite.