Molecular formula: FeSO4 7H2O CAS: 7782-63-0 Appearance: Light blue green crystal Properties: Glaucous crystallization. The relative density 1.897, melting point degree into four 64 when water and salt, salt water into degree when 65. In the wet air oxidation as alkali type sulphuric acid easy high iron into yellow. Soluble in water, insoluble in alcohol. Aqueous easy oxidation. Use: Analytics reagents. DTC, polymerization catalysts. Also used in photoengraving, medium preparation. We supply reagent grade pharmaceutical grade USP grade BP grade industrial grade. If you are interested in our products please contact me.