Item | Standard |
Characters | White crystalline powder |
Assay | 99.0%~101.0% |
Appearance of solution | (Comply with the standard) |
Water-insoluble | 0.002 % |
Chloride | 0.0005% |
Nitrogen compound | 0.002% |
Phosphate | 0.001% |
Silicate | 0.001% |
Sodium |
0.02% |
Magnesium | 0.0005% |
Aluminium | 0.001% |
Calcium | 0.002% |
Iron | 0.0005% |
Arsenic |
0.0003% |
Heavy metal | 0.0005% |
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