| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White to light yellow powder | Conforms |
| Hazen | ≤300 | 120 |
| By color degree | ≥BY4 | BY4 |
| Solubility | Test in water, acetone, methanol, Ethanol | Conforms |
| PH | 4.0~6.0 | 4.9 |
| Melting point | 216.0~220.0℃ | 216.9~217.5℃ |
| Loss on drying | ≤0.50% | 0.10% |
| Residue on ignition | ≤0.2% | 0.11% |
| Chlorides | ≤200ppm | <200ppm |
| Sulphates | ≤500ppm | <500ppm |
| Heavy metals | ≤20ppm | <20ppm |
| Related substances | A ≤0.15% | ND |
| B ≤0.10% | 0.013% | |
| D ≤0.15% | 0.003% | |
| E ≤0.15% | ND | |
| I ≤0.15% | ND | |
| K ≤0.15% | ND | |
| L ≤0.15% | ND | |
| O ≤0.15% | ND | |
| Any other impurity ≤0.10% | 0.006% | |
| Total impurities ≤0.30% | 0.035% | |
| Assay (on dry base) | 99.0%~101.0% | 99.66% |
| Conclusion: The Product Conforms to Enterprise Standard. | ||
