Copper sulphate Molecular formula:CuSO4.5H2O Molecular weight:249.6796 Appearance:Blue crystal powder CAS:7758-99-8 Copper Sulfate 98% CAS: 7758-99-8 EC No:231-847-6 Molecular Formula:CuSO4·5H2O Molecular Weight:249.6796 Appearance: blue crystal powder Specification: Item Feed Grade Purity 98% Min Cu 25%Max Pb 20PPM Max Fe 0.1% Max Zn -- Ni 20PPM Max Cd 10PPM Max. As 10PPM Max Hg 0.1PPM Max. Insoluble matter 0.05% Max Size 1 -3mm or 1 -4mm or 2 -5mm or powder Usage: As a material of copper salts in the chemical industry. Used in dyestuffs, as a mordant, pigment, preservative, in medicines, and pesticides. Packing:25Kg in plastic woven bags with plastic lining.