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| grade | for HPLC |
| assay | ≥99.0% (calc. on dry substance, T) |
| ≥99.0% | |
| form | solid |
| impurities | ≤1% water |
| pH | 6.5-7.5 (20 °C, 10% in H2O) |
| mp | 110-112 °C (dec.)(lit.) |
| solubility | H2O: soluble0.1 g/mL at 25 °C, clear, colorless |
| λ | 10 % in H2O |
| UV absorption | λ: 250 nm Amax: ≤0.05 |
| λ: 260 nm Amax: ≤0.04 | |
| λ: 270 nm Amax: ≤0.03 | |
| λ: 280 nm Amax: ≤0.02 | |
| λ: 500 nm Amax: ≤0.02 | |
| suitability | corresponds for filter test |
| corresponds to standard for RP gradient test |
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