1.Chemical Formula: CuSO4·5H2O 2.Molecular Weight: 249.66 3.CAS No.: 7758-99-8 4.HS Code: 28332500 5.UN NO.: 3077 Class Feed additives, trace elements for animals; Agricultural fertilizers, fungicides & insecticides; Non-ferrous metal flotation reagents; Manufacture other cupric salts, monoazo dyes; Catalyst for the synthesis of perfumes and dyes intermediates; Copper foil & PCB etching.