... copper oxide molecular formula: CuO CAS: 1344-70-3 Appearance: brownish black Properties:Is a kind of copper black slightly bisexual, oxide ... nized melting point. Insoluble in water, soluble in acid and ethanol, ammonium chloride solution, ammonia solution slowly dissolve. ... Use:System rayon, ceramics, glaze and enamel, battery, oil desulfurizer, pesticides, also for ...