... -70-3 Appearance: brownish black Properties:Is a kind of copper black slightly bisexual, oxide, slightly hygroscopicity. The relative molecular mass ... , ammonia solution slowly dissolve.Use:System rayon, ceramics, glaze and enamel, battery, oil desulfurizer, pesticides, also for hydrogen production, catalyst, with ... (N)/%≤0.002Carbon compound(C)/%≤0.002 reagent grade 99% Copper oxide wire Cuo