Cobalt Oxide 1.O/A Payment 2.CAS No.: 1307-96-6 3. Appearance: Black Powder;Purity: 72%, 74% 4. Packing: 25KG Iron Drums The product, Cobalt Oxide, is mainly used in horniness alloy, magnetic materials, enamel coloring and ceramics pigment.Properties: A kind of odourless, insipid and black powder; insoluble in water, but soluble in hot inorganic acids.Storage: Store at a ventilating and dry place ...