Sodium Metabisulfite – Sodium Disulfate, 500gm Merck Germany

Sodium Metabisulfite – Sodium disulfite – 500gm, Merck – Germany.

Sodium metabisulfite or sodium pyrosulfite is an inorganic compound of the chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent.