Product name: Magnesium sulphate heptahydrate
Main content: 99. 5% min,
MgSO4: 48. 59%
Fe: 0.0015%max ,
Pb: 0.001%max
Insoluble in water: 0. 01%max,
As: 0.002%max
PH: 5-8,
Grain size: 0.1mm-1mm
PH: 5-8,
Grain size: 0.1mm-1mm