Specification
Appearance: white crystal or powder
Purity: 99.7%min
Melting point: 165-168 ℃
Loss on drying: 0.1% max
Ignition residue: 0.1% max
Color: 5 APHA max
Iron(Fe): 5 ppm max
Heavy metal: 5 ppm max
Chloride: 5 ppm max
Sulfate: 20 ppm max
Cu: 1 ppm max
Mn:: 1 ppm max