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Anhui Leafchem Co., Ltd.
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| Product name | Menthol Crystals | ||
| Items | Standards | Analytical Results | |
| USP31 | BP2008 | ||
| Identification | Colourless, transparent hexagonal or needlelike crystals. | Complies with standard | |
| Melting point(℃) | 41～44℃ | About 43℃ | 42.7℃ |
| Solubility | 1g soluble in 5ml of 90%(v/v) alcohol,forming a clear solution | Complies with standard | |
| Specific rotation (25 ℃) | -45°～-51° | About -50° | -49.6° |
| Limit of Nonvolatile residue (%) | Not overrun 0.05 under condition of 105 ℃ | 0.01 | |
| Organic volatile impurities | Solvent-Use dimethyl sulfoxide | Meets the requirement | |
| Chromatographic purity | The peak response due to menthol is not less than 97% | 99.65 | |
| As Content | ≤3ppm | Absent | |
| Heavy metals | ≤10ppm | Absent | |
| Residue on ignition | ≤0.1% | 0.03% | |
| Related substances | Examine by gas chromatography | Meets the requirement | |
| Conclusion | Analytical results conforming to standard BP2008/USP31 | ||
| Product name | Menthol Crystals | ||
| Items | Standards | Analytical Results | |
| USP31 | BP2008 | ||
| Identification | Colourless, transparent hexagonal or needlelike crystals. | Complies with standard | |
| Melting point(℃) | 41～44℃ | About 43℃ | 42.7℃ |
| Solubility | 1g soluble in 5ml of 90%(v/v) alcohol,forming a clear solution | Complies with standard | |
| Specific rotation (25 ℃) | -45°～-51° | About -50° | -49.6° |
| Limit of Nonvolatile residue (%) | Not overrun 0.05 under condition of 105 ℃ | 0.01 | |
| Organic volatile impurities | Solvent-Use dimethyl sulfoxide | Meets the requirement | |
| Chromatographic purity | The peak response due to menthol is not less than 97% | 99.65 | |
| As Content | ≤3ppm | Absent | |
| Heavy metals | ≤10ppm | Absent | |
| Residue on ignition | ≤0.1% | 0.03% | |
| Related substances | Examine by gas chromatography | Meets the requirement | |
| Conclusion | Analytical results conforming to standard BP2008/USP31 | ||
