| Item | Specification | Result |
|---|---|---|
| Appearance | White crystals or a white crystalline powder | Complies |
| Identification | Complies with BP/USP | Complies |
| Melting point | 226-230℃ | 226.8-229℃ |
| Acidity or alkalinity | 4.5-5.5ml | 5.0ml |
| Charity and color of solution | NMT that of reference suspension A | Complies |
| Readilt carbonisable Substances | The solution has no more color than Matching Fluid A | Complies |
| Heavy metals | ≤0.001% | ＜0.001% |
| O-and p-toluenesulphonamide | ≤0.001% of each | ＜0.001% |
| Water | Not more than 15.0% w/w | 13.70% |
| Assay | 99-101% | 99.38% |
| Organic Volatile impurities | Complies with USP | Complies with USP |
| Benzoate and Calculate | Complies with USP | Complies with USP |
| Arsenic | ≤0.0003% | ＜0.0003% |
| Selenium | ≤0.003％ | ＜0.003% |
 |  |
| Export 25Kg/Bag | Export 25Kg/Kraft Bag |
 |  |
| Export 50Kg/Fiber Drum | Export 25Kg/Cardboard Drum |
 |  |
| Export 25Kg/Carton | Domestic 5g/Small Bag |
 |  |
| Domestic 500g/Bag | Domestic 25Kg/Bag |
 | |
| Domestic 20Kg/Carton |
