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Testing items | Standard | Testing results |
Characters | colorless prism shape crystal, It has a pleasant minty aroma | Qualified |
dissolution degree | 41.0℃-44.0℃ | 41.9℃-43.5℃ |
Specific optical rotation | -50°~-49° | -49.8 |
Solubility(25℃) | The 1g sample was completely dissolved in 5ml90% ethanol | Qualified |
Total alcohol (in menthol) | >99.0 | 99.6 |
Residue content after evaporation (%) | ≤0.05 | 0.01 |





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