| Testing Items | Specifications | Results |
| Appearance | White or almost white crystalline powder | Conforms |
| Identification | Meet the requirement | Conforms |
| Loss on drying | ≤0.50% | 0.08% |
| Residue on ignition | ≤0.10% | 0.05% |
| Heavy metals | ≤20ppm | <20ppm |
| Assay | 98.5%~101.5% | 99.64% |
| Conclusion: The Product Conforms to USP. |
||
