Product : Copper Oxide 
Molecular Formula : CuO
Molecular weight: 79.54
CAS No. : 1317-38-0
Appeance : black or dark brown powder, slightly hygroscopic. Density of 6.3-6.9 g/cm3 nized degrees, melting, insoluble in water and alcohol  , soluble in acid, and Ammonium chloride solution,  slowly dissolve in ammonia solution.
Specification :
Item Level   CuO 98.00%min 
Total copper 78.2%min 
Total hydrochloric acid Insoluble residue 0.20%max 
Water liquefiable 0.20%max 
Chloride as Cl 0.20%max 
Sulphate as SO4 0.20%max 
Particle size (100 mesh) 1.00%max 

Uesage : Mainly used for electroplating of electricity plate and the production of stainer for glass, ceramic and porcelain. Also, for the production of fireworks, dyes, catalysts, lacquer, oil-based desulfurizing agent and other nantokites.