1.Molecular formula: cuso4â·5h2o 2.Cas no.: 7758-99-8 3.Application: 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.