| Testing Items | Specifications | Results |
| Appearance | White crystalline powder | Conforms |
| Melting point | 204~207℃ | 205.3~206.2℃ |
| PH | 7.5~8.0 | 7.65 |
| Sulfated ash | ≤0.10% | ＜0.05% |
| Heavy metals | ≤10ppm | ＜10ppm |
| Loss on drying | ≤0.50% | 0.40% |
| Ninhydrin-positive substances | Positive reaction | Confirms |
| Assay | 98.5%~101.0% | 99.33% |
| Conclusion: The Product Conforms to EP/USP. |
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