+86-510-8712428887125029, +86-510-87121088-2259, +86-510-87121070, +86-510-87121789, +86-510-87121088-2151, +86-510-87121088-2070, +86-510-87125036
Item | Unit | Enterprise standard | BP2004 | USP31 | FCC6 | E331 | GB 6782－86 |
Appearance | colorless crystal or white crystalline powder | ||||||
Identification solubility | Meet the specification | ||||||
Acidity or alkalinity | Meet the specification | ||||||
Transparency/color | Meet the specification | ||||||
Light transmission (366nm) | 25% aqueous solution: clear | Meet the specification | ／ | ／ | ／ | ／ | |
Moisture | % | 11.0～13.0 | 11.0～13.0 | 10.0～13.0 | 10.0～13.0 | ≤13.5 | ／ |
Assay | % | 99.0～100.5 | 99.0～101.0 | 99.0～100.5 | 99.0～100.5 | ≥99.0 | ≥99.0 |
RCS | BU | Not beyond the standard | Not beyond the standard | ／ | ／ | ／ | Not beyond the standard |
Iron salt | ppm | ≤5 | ／ | ／ | ／ | ／ | ≤10 |
Chlorides | ppm | ≤5 | ≤50 | ／ | ／ | ／ | ≤100 |
Sulphates | ppm | ≤20 | ≤150 | ／ | ／ | ／ | ≤300 |
Oxalates | ppm | ≤20 | ≤300 | ／ | ／ | ≤100 | ≤500 |
Calcium salt | ppm | Meet the specification | ／ | ／ | ／ | ／ | Meet the specifi-cation |
Barium salt | ppm | Meet the specification | ／ | ／ | ／ | ／ | Meet the specifi-cation |
Heavy metal | ppm | ≤1 | ≤10 | ≤10 | ／ | ≤5 | ≤5 |
Arsenic | ppm | ≤0.2 | ／ | ／ | ／ | ≤1 | ≤1 |
Lead | ppm | ≤1 | ／ | ／ | ≤2 | ≤1 | ／ |
Mercury | ppm | ≤0.5 | |||||
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