Product Description: We are offering Cobalt Oxide to our clients. Product Specification: Appearance: Steel-Grey or Black Powder Assay: 99.00% Co: 70-73% NiO: 0.35% (Max.) Fe2 O3: 0.08% (Max.) SO4: 0.45% (Max.) Other Impurities: 0.20% (Max.) Mn: Less than 3500 ppm