Appearance white crystal
Main content 99.0% min
Mgso4 48.3% min
Mgo 16.3% min
Mg 9.6% min
Ph(5w/v%sol) 4.5-6.5
Ferron(fe) 0.0015% max
Chlorid(cl) 0.005% max
Heavy metal(pb)0.001 %max
Arsenic(as) 0.0002% max
Insoluble 0.001% max
Size(mm)0.1-1