Content
99% min
Chloride (Cl)
0.05% max
Sulphate (SO4)
Nitrate
0.01% max
Phosphate
Residue on ignition
0.1%
Iron (Fe)
0.002% max
Heavy metal (Pb)
0.005% max
Usage: used in the medicine intermediate and food antiseptic, the chemical reagent and so on