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Metronidazole benzoate
| ITEMS | LIMIT |
| Characteristics | A white or slightly yellowish crystalline powder or flakes |
| Solubility | Meet the requirements |
| Melting Point | 99 ~ 102℃ |
| A(1%,1cm) of UV | 525 ~ 575 |
| IR | Meets the requirements |
| Primary aromatic amines reaction | Should be positive reaction |
| Appearance of solution | |
| ≤Reference suspension II | Meet |
| ≤Reference solution GY3 | Meet |
| Acidity | |
| Add 0.02M NaOH to the solution | ≤0.25ml |
| Related substances | |
| Impurity A,B,C | ≤0.1% |
| Any other impurity | ≤ 0.1% |
| Total impurities | ≤0.2% |
| Heavy Metal | ≤20ppm |
| Loss on drying | ≤0.5% |
| Sulphated Ash | ≤0.1% |
| Assay | 98.5% ~ 101.0% |
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