Powder: | Yes |
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Certification: | GMP, HSE, ISO 9001, USP, BP |
Suitable for: | Elderly, Children, Adult |
State: | Solid |
Purity: | >99% |
Purity Degree: | 99% |
Customization: |
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Items |
Standard |
Result |
Appearance | White powder to yellowish powder | White powder |
εat 260nm and pH 7.5 | (18.0±1.0)×I03L/mole/cm | 17.8×I03L/mole/cm |
εwhen reduced with alcohol dehydrogenase at 340nm and pH 10 | (6.3±0.2)×I03L/mole/cm | 6.4×I03L/mole/cm |
Ratio at pH 7.5 | ||
A250/A260 | 0.83±0.03 | 0.83 |
A280/A260 | 0.21±0.02 | 0.20 |
Ratio when reduced with alcohol degydrogenase at pH 10 | ||
A340/A260 | 0.43±0.01 | 0.44 |
Solubility | Soluble in water | Conforms |
Water | ≤10% | 5.2% |
Assay | ≥90% | 90.04% |
Purity | ≥95% | 99.08% |
Items |
Standard |
Result |
Appearance |
White to off-white powder |
White powder |
Assay (W/W dry basis) |
≥98.0% |
99.16 % |
Residue on ignition |
<0.5% |
0.256% |
Water (w/w by KF) |
≤1.0% |
0.420% |
pH Value(1% aq.) |
5~9 |
7.28 |
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