CAS Registry Number

CAS 1309-64-4 — Antimony(III) oxide

Antimony(III) oxide is a white or yellowish powder widely used as a flame retardant in plastics, textiles, and rubber, as well as a pigment in ceramics and glass manufacturing. It also serves as a catalyst in chemical synthesis and an intermediate in the production of other antimony compounds. This chemical has a CAS number of 1309-64-4, a molecular formula of Sb₂O₃, and a molecular weight of 291.52 g/mol. It must be stored at ambient conditions and carries a **Danger** signal word due to its toxicity and environmental hazards. Molekula supplies Antimony(III) oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.