Description Zinc Oxide, ACS, 99.8%, 1kg For Research & Development Not for drug, clinical use in humans, for food or food additive use Certificate of Analysis: Assay 99.8% Insoluble in Dilute Sulfuric Acid <0.01% Alkalinity P.T. Chloride (Cl) <0.001% Nitrate (NO3) <0.003% Sulfur Compounds (as SO4) <0.01% Arsenic (As) <2 ppm Calcium (Ca) <0.005% Iron (Fe) <0.001% Lead (Pb) <0.005% Magnesium (Mg) <0.005% Manganese (Mn) <5 ppm Potassium (K) <0.01% Sodium (Na) <0.05% CAS: 1314-13-2 FORMULA: ZnO