Description Antimony Metal, Pieces, 99.6% (Metals Basis), Certified, 2.5kg For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Form) Pieces Appearance (Color) Grey Assay (Metals Basis) 99.6% Copper (Cu) 0.004% Identification P.T. Iron (Fe) 0.006% Lead (Pb) <0.05% Melting point 630 °C CAS: 7440-36-0 FORMULA: Sb