... price, trustworthy quality. Good, safe package High purity, professional service Ideal for long-term cooperation copper oxideCAS: 1344 ... magnetic material, enamel coloring, ceramics pigment and copper salt. Application: widely used in glass,pigment ... chloride, dissolved in sodium hydroxide to produce blue color solution, which leads to hydrogen or ... .10Residue on sieve (300um ) ,≤ %0.10 Copper Oxide 98%