... gradeMolecular formula: CuOMolecular weight: 79.55Characters: Copper oxide is black to brown amorphous powder or crystalline particles (monoclinic crystals). ... board plating, Ferrite magnetic materials and other electronic industries, glass, ceramic, enamel, paint industry, agent for take away, fungicides, solar ... insoluble ≤%0.010.20.2Cl¯ ≤%0.010.20.2 High quality black copper oxide plating grade