... to electric plating ,magnetic material, enamel coloring, ceramics pigment and copper salt. Application: widely used in glass,pigment,desulfurizer,catalyst,etcPacking ... carbon monoxide at high temperature can be reduced to metallic copper. ItemStandard IStandard IICuO , % ≥9998Muriatic acid insoluble substance ≤ ,%0.050. ... on sieve (150um ) ≤ ,%0.10Residue on sieve (300um ) ,≤ %0.10 Copper Oxide 98%