Description Lead(II) Oxide, Powder -200 mesh, 99.999% (Metals Basis), 500g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) YellowAppearance (Form) Powder Assay (Metals Basis) 99.999% Assay (as Pb) 92-95% Melting Point 888 °C (Approx.) Solubility Insoluble in water CAS: 1317-36-8 FORMULA: PbO