Description Antimony(III) Oxide, Reagent, 99.79%, 500gFor Research & DevelopmentNot for drug, human, animal, or food use Certificate of Analysis:Appearance (Color) WhiteAppearance (Form) PowderAssay (Brometric) 99.79%Arsenic <0.06% Chloride 0.003% X-Ray Diffraction Confirms Sb component Iron 0.002% Lead <0.05% Particle Size <5 micron Sulfate 0.01% CAS: 1309-64-4 FORMULA: Sb2O3