black Copper Oxide 1)CuO%,98%;Cu,78.2% 2)Package,25kg/bag 3)Usage,circuit board plating, Ferrite magnetic materials English name: Copper oxide, Cupricoxide, Coppermonoxide,BlackcopperoxideMolecular formula: CuOMolecular weight: 79.55Characters:        Copper oxide is black to brown amorphous powder or crystalline particles (monoclinic crystals). Relative density 6.315, melting point 1446 °C, Mohs hardness 3-4, dielectric constant 18.10, insoluble in water, soluble in acid, ammonia, ammonium chloride, dissolved in sodium hydroxide to produce blue color solution, which leads to hydrogen or carbon monoxide at high temperature can be reduced to metallic copper.                     Mainly used for circuit board plating, Ferrite magnetic materials and other electronic industries, glass, ceramic, enamel, paint industry, agent for take away, fungicides, solar heat absorber surface, reducing tobacco tar, artificial rainfall materials,etc.

Testing Item	Plating grade	E-Class	Industrial grade
CuO ≥%	98.5	98	98
Zn       ≤%	0.02	---	---
Fe       ≤%	0.01	---	---
Pb      ≤%	0.006	0.01	---
Cd       ≤%	----	0.0005	---
Hg      ≤%	----	0.0002	---
Cr Vl ≤%	----	0.0002	---
Acid insoluble        ≤%	0.01	0.2	0.2
Cl¯   ≤%	0.01	0.2	0.2

CuO 98% black Copper Oxide Industrial,Electron,Electroplate Grade