Physical Nature: Molecular Formula:CuSO4.5H2O Molecular Weight:249.60 Appearance: Blue granule crystal General Chemical Assay (%)ElementClass AClass BCuSo4.5H2O>98>98Cu>25>25Fe<0.02<0.05Pb<0.002<0.003Zn<0.0005<0.0005Ni<0.25<0.30PH(5% 20oC)3.5-4.53.5-4.5Insoluble Matter<0.005<0.01