CAS number: 2216-51-5
Molecular formula: C10H20O
molecular weight: 156.2652
Chemical structure:
CERTIFICATE OF ANALYSIS | |||
Product Name | Menthol Crystal | Shelf Life | 2 years |
Items | Standards | Analytical Results | |
USP39 | BP2015 | ||
Identification | Colourless, transparent hexagonal or needlelike crystals. | Complies with standard | |
Melting point(℃) | 41~44℃ | About 43℃ | 41.5-42.5℃ |
Solubility | 1g soluble in 5ml of 90%(v/v) alcohol,forming a clear solution | Complies with standard | |
Specific rotation(25℃) | -45°~-51° | About -50° | -49.68° |
Limit of Nonvolatile residue (%) | Not overrun 0.05 under condition of 105℃ | 0.01 | |
Chromatographic purity | Solvent-Use dimethyl sulfoxide | Meets the requirement | |
As Content | The peak response due to menthol is not less than 97% | ≥99.6 | |
Organic volatile impurities | ≤3ppm | <3ppm | |
Heavy metals | ≤10ppm | <10ppm | |
Residue on ignition | ≤0.1% | 0.03% | |
Related substances | Examine by gas chromatography | Meets the requirement | |
Conclusion | Analytical results conforming to standard BP2015/USP39 |