Description Tin(IV) Oxide, Powder -325 mesh, 99.995+% (Metals Basis), Certified, 25g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) Off-white Appearance (Form) Powder Assay (Metals Basis) 99.995+% Particle Size -325 mesh CAS: 18282-10-5 FORMULA: SnO2