... , purification, disinfectants, magnetic materials, materials, etc. A patent, properties, Feso: 7H2O - traits: turquoise single crystal, soluble in water, glycerin, not soluble ... . Second, the product specification product standards: GB10531-89 ferrous sulfate FeSO4 (7H2O - 90%, titanium dioxide content of p content of TiO2 than ... the proportion of dosage, can cast as dynamic dosing. Feso-7H2O