Content : 99.5% min
Melting point: 200-206
Heavy metals (Pb): 0.001% max
Arsenic (As): 0.0002% max
Sulphate (SO4): 0.04% max
Chloride (Cl): 0.01%max
Loss on drying: 0.5% max
Residue on ignition: 0.10% max
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