Properties Black or brownish powder, density 6.3-6.49g/cm3, melting point 1326℃. It is insoluble in water and alcohols, soluble in acid, ammonium chloride solution and potassium cyanide solution. Slow dissolution rate in ammonia solution.
Application Cupric Oxide is used as colorant of glass, magnetic material, enamel and ceramics, etc. It is used to produce fireworks, fuel, catalyst and other copper salts. It is also used in rayon industry, as well as oil desulfurizer, anti-wrinkling agent of paints and coatings. Cupric Oxide is also used in electronic industries.