硫酸镁Heptahydrate

Magnesium Sulphate Heptahydrate Character: Made by light magnesium and sulfuric acid through the chemical technology system, it is achromatic or white crystallizes that is easy to dissolve in the water, slightly soluble in ethyl alcohol. And it has bitter salty taste, no smell. Exposed in the air, it will invert into powdery trough efflorescence. Specificaiton: SPECIFICATION:HG/T 2680-95 Item index MgSO4.7H2O (on dry basis)99.0%min PH 6-8 Ferrous (Fe) 0.002%max Chlorid(Cl) 0.02%max Heavy metal(Pb) 0.001%max Arsenic (As) 0.0002%max Mgo 16%min