Antimony trioxide (Sb2O3) is an important commercial compound of Antimony. It is used as opacifying agent in the manufacturing processes of glasses and ceramics. In making Autimony salts as Catalyst. We source our range of Antimony Trioxide from Japan. We supply this compound in 25 kg multilayer paper bags. Specifications: Chemical Name: Antimony Trioxide CAS Number:1309-64-4 Appearance:white crystalline solid Molecular Formula: O3Sb2 Flash Point: N/A. Not flammable. Lower Explosive Limit: N/A. Not flammable. Upper Explosive Limit: N/A. Not flammable. Autoignition Temperature: data unavailable Melting Point: 655ºC Vapor Pressure: 133 (