Ferrous sulfate heptahydrateCAS No. : 7782-63-0EINECS No.: 238-676-6MF : FeSO4·7H2OPurity : ≥92%Appearance : blue-green crystalline particlesNature :1. odorless. Weathering in dry air.2. Dissolved in water, almost insoluble in ethanol. The aqueous solution of the slow oxidation in the air, in the heat faster oxidation. 3. Alkali or exposure to light can accelerate its oxidation. Irritant.Quality index :Test ItemsUnit Of MeasureLab Test ResultsFeSO4·7H2O %≥9292.2TiO2,%≤0.50.42Water-insoluble,%≥0.50.53As,%≤0.00050.0003H2SO4,%≤2.01.7Heavy Metal (Pb),%≤0.0020.0018Application :for purifying agent, gas purifying agent, herbicides, and the production of inks, pigments, medi...