| Testing Items | Specifications | Results |
| Appearance | Colorless liquid | Conforms |
| Identification | Meet the requirement | Conforms |
| Melting point | 46℃~49℃ | 48.5℃ |
| Loss on drying | ≤0.50% | 0.01% |
| Residue on ignition | ≤0.10% | 0.05% |
| Heavy metals | ≤20ppm | <20ppm |
| Assay | 98.5%~101.5% | 99.68% |
| Conclusion: The Product Conforms to USP. |
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