Appearance White cylinder crystalline Main content 99.5% min MgSO4 48.59% min MgO 16.27% min Mg 9.81% min PH(5W/V%Sol) 5-8 Ferron(Fe) 0.001% max Heavy metal 0.0006%max Lead(Pb) 0.0001%
Arsenic(As) 0.0001% max Insoluble 0.001%max Size (mm) 0.1-1 0.2-3 1-4