Character: Blue green monoclinic crystal, soluble in water, glycerin; insoluble in alcohol; with corrosion, easy to deliquesce and efflorescence. Purpose: Used as medicine, fwd, agriculture pesticide, fertilizer, feed, pigment, catalyst, decontamination agent, disinfectant, magnetic material etc. Industry Standard Chinese Pharmacopoeia 2010 Item Index FeSO4·7H2O % ≥98.5 Cl% ≤0.03 Pb% ≤0.002 Mn% ≤0.1 Zn% ≤0.05 Hg% ≤0.0003 High Fe % ≤0.5 Clarity Clarity |