... -99-8 1,A Major manufacturer and Supplier of copper sulphate pentahydrate2,20 years experience of exporting3,CAS No.: ... 7758-99-8Copper sulphate pentahydrateProduct Name: Copper sulphate pentahydratel Formula: CuSO4.5H2O l HS Code: 2833250000l ... (3) Chemical industry: used in the manufacture of copper salt leaching,copper chloride,cuprous chloride and cuprous oxide,etc.(4) Dyestuff ...