In inorganic industry, it is used to produce copper (I) chloride, copper(II)Chloride, copper pyrophosphate, copper (I) oxide, cupric acetate, copper carbonate, etc. In dye and paint industry, it is used to produce cupric monoazo dye, such as reactive brilliant blue, reactive violet, etc. In organic industry, it is used to synthesize catalyst of spice and dye intermediate and inhibitor of methyl methacrylate. In paint industry, it is used to produce antiseptic of antifouling paint on the bottom of ship. In galvanization industry, it is used to produce cupric ion additive. In dyeing and painting industry, it is used for dye mordant and refined dye cloth pro oxygenic agent. In agricultural industry, it is used for pesticide.