Tests | Specification | Results |
Appearance | White crystalline powder | White crystalline powder |
MP | 168.0ºC~172.0ºC | 168.4ºC~170.2ºC |
Aqueous solution(40%) | Clear,colorless solution | Conforms |
290nm Ultraviolet absorbance(40% aq.) | ≤ 0.2% | 0.081 |
PH(5% aq.) | 10.0~11.5 | 10.9 |
Heavy Metals | ≤5 ppm | Conforms |
Ferric ion | ≤5 ppm | Conforms |
Chloride | ≤10 ppm | Conforms |
Sulfate | ≤ 10ppm | Conforms |
Water | ≤0.3% | 0.1 |
Assay | ≥ 99.5% | 99.93 |
Conclusion | Qualified. |
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