Appearance: White or reddish crystal

Assay: 98.0% min

Loss on drying: 2.0% max

PH: 4.5-6.0

Chloride: 0.06% max

Sulfate: 0.07% max

Ferric salt: 0.008% max

Heavy metals: 0.002% max

Package: 25kg/ Woven bag