| Testing Items | Specifications | Results |
| Appearance | White crystals or crystalline powder | Conforms |
| Identification | Meets the requirements | Conforms |
| Water | ≤3.0% | 0.55% |
| Heavy metals | ≤5ppm | <5ppm |
| Chromatographic purity | Any impurity ≤0.3% | 0.12% |
| Total impurities ≤0.5% | 0.15% | |
| PH | 8.0~10.5 | 8.8 |
| Assay | 99.0%~101.0% | 99.3% |
| Conclusion: The Product Conforms to USP. |
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