Items |
Standard |
Appearance |
Colorless to white crystals |
Assay |
99.50% |
Moisture |
0.5% |
Melting Point(℃) |
185-189 |
Water Solution Clarity |
Colorless and transparent |
Water Insolubles |
100PPM |
Residues on Ignition |
0.1% |
Chlorides |
0.007% |
Sulfates |
0.02% |
Heavy metals(Pb) |
10PPM |
Fe |
10PPM |
Cadmium |
10PPM |
Arsenic |
2PPM |