Uses:Colorlessorwhitegranular,mainlyusedintanning,porcelain,pigment,match,fireproofmaterials,Mg-salt,dyeing,medicineandfoodadditives.Spec: Items Specification forindustrial forpharmacal MgSO4·7H2O 99%min 99.5%min As 4ppmmax 2ppmmax Cl- 0.08%max 0.010%max Fe2+ 0.0015%max 0.0015%max LossonIgnition 48.0~52.0%Packing:25Kg/(PE+PP)Bag,25MT/20’FCL