CAS Registry Number

CAS 10117-38-1 — Potassium sulfite

Potassium sulfite (K₂SO₃) is an inorganic salt primarily used as a reducing agent, antioxidant, and preservative in food, pharmaceuticals, and water treatment. It prevents oxidation in dried fruits, wines, and processed foods, while also serving as a bleaching agent and corrosion inhibitor in industrial applications. This white crystalline powder has a CAS number of 10117-38-1, a molecular weight of 158.26 g/mol, and requires ambient storage. It carries a **Warning** signal word under GHS classification. Molekula supplies potassium sulfite from research to bulk quantities with full documentation and ISO 9001:2015 traceability.