Magnesium sulfate 1.Product description: Magnesium sulfate heptahydrate Molecular formula: mgso4.7h2o Molecular weight :246.47 Magnesium sulfate heptahydrate Appearance white small granular Main content 99% min Mgso4 48.59% min Mgo 16.27% min Mg 9.81% min Ph(5w/v%sol) 5-8 Calcium(ca) 0.008% max Ferron(fe) 0.001% max Chlorid(cl) 0.005% max Heavy metal (pb) 0.0008 %max Arsenic(as) 0.0002% max Insoluble 0.0001%max Size (mm) 0.1-1 Magnesium sulfate pentahydrate(usp. Bp. Cp): Appearance white powder Main content 99% min Mgso4 56% min Mgo 19% min Mg 11.31% min Ph(5w/v%sol)5-6.5 Ferron(fe) 0.001% max Chlorid(cl) 0.005% max Heavy metal(pb)0.0008 %max Arsenic(as) 0.0002% max Insoluble 0.001%max Size(mm)0.1 Polypropylene woven bag lined with polyethylene bag Or polypropylene woven bag with inner laminated polyethylene bag, Net weight: 25kg/bag