Customization: | Available |
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Type: | Natural Flavor |
State: | Powder |
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Menthol crystals are cooling, refreshing, and have a pleasantly strong minty aroma. They are often used in cosmetics, salves, balms, medicated creams, throat lozenges, toothpaste, mouthwash, gum, foot sprays, pain relief or cooling body products, shampoos, conditioners, liniments, shaving creams, oral or throat sprays, compresses, medicated oils, and cooling gels. Menthol crystals are excellent for use in these products to help relieve muscular aches and pains, coughing, congestion, the flu, and upper respiratory problems. Since Menthol crystals are so concentrated, only a very small amount is needed within products. When purchasing Menthol crystals remember that a good quality menthol crystal usually contains not less than 99.4% menthol
Item | Specifications | Results | |
USP31 | BP2012 | ||
Identification | Colorless, transparent hexagonal or needlelike crystals. | Conforms | |
Melting point | 41~44ºC | About43ºC | 41.5~42.5ºC |
Solubility | 1g soluble in 5ml of 90%(v/v) alcohol, forming a clear solution | Conforms | |
Specific rotation | -45°~-51° | About-50° | -49.68° |
Limit of nonvolatile residue | Not overrun 0.05 under condition of 105ºC | 0.01 | |
Organic volatile impurities | Solvent-Use dimethyl sulfoxide | Meets the requirement | |
Chromatographic purity | The peak response due to menthol is not less than 98% | ≥99.3% | |
As content | ≤3ppm | <3ppm | |
Heavy metals | ≤10ppm | <10ppm | |
Residue on ignition | ≤0.1% | 0.03% | |
Related substances | Examine by gas chromatography | Conforms | |
Conclusion | The results conform with BP2012/USP31 standards |