Ferrous sulfate, Ferrous Sulfate Heptahydrate, Mol. Wt. 278.01 gmol, Mol Formula : FeSO4.7H2O, Appearance Pale Bluish Green Crystals, Test Solution(10 %WV),Water,1 ml H2So4(96%) Clear and Bluish Green Solution, PH (5% Aqueous Solution) at 25 0C-3.0 -