Anhydrous form of copper sulfate occurs as mineral hydrocyanite. It exhibits a rhombic crystalline morphology. It decomposes to its oxide at temperatures above 600oC. Copper Sulphate Pentahydrate: We are engaged in offering our clients a high quality range of Copper Sulphate Pentahydrate. Use : Widely used in the preparation of pesticides and fertilizers Features : Accurate composition Effective Stability