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L-Menthol
- CAS: 2216-51-5
- Chemical Formula: C10H20O
- Standard: Enterprise Standard
- Certifications: ISO9001 / Halal / Kosher
- Minimum Order Quantity: 1000 kg
- Shelf Life: 12 months
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Product Description
What is L-Menthol？
L-Menthol is an organic compound with the chemical formula C10H20O. It is a white crystalline solid with a refreshing mint aroma. The melting point is 41–44℃. It is soluble in ethanol, acetone, ether, chloroform, benzene, and other organic solvents, but only slightly soluble in water.
Its chemical properties are relatively stable and it can volatilize with steam. Due to its wide range of biological activities, it is widely used in various industries, especially in the development of health products.
Specifications:
| Item | Specification |
| Color/Appearance | White solid |
| Content (GC) | 99.97% |
| Odor | Refreshing mint aroma |
| Residue on evaporation | ≤0.05% |
| Melting range (start) °C | 41.21 |
| Melting range (end) °C | 42.17 |
| Solubility (25℃) | 1g completely soluble in 5ml of 90% ethanol |
| L-content | 99.60 |
| Optical rotation | -49.866 |
| D-content | 0.31 |
Applications of L-Menthol
1. Pharmaceutical Applications
- Pain relief: penetrates the skin and temporarily relieves muscle pain, making it a key ingredient in topical analgesics.
- Anti-inflammatory effect: laboratory studies show potential for reducing inflammation.
- Antibacterial properties: used as a natural disinfectant in antibacterial ointments and oral care products.
2. Food Industry Applications
- Flavoring agent: commonly added to candies, chewing gum, and beverages for a long-lasting cooling sensation.
- Preservative effect: its antibacterial properties help extend shelf life and reduce spoilage.
- Taste enhancer: improves the flavor of traditional herbal drinks and increases consumer acceptance.
3. Cosmetics and Personal Care Applications
- Cooling and soothing: provides a refreshing sensation in creams and facial sprays.
- Hair care: added to shampoos to soothe the scalp and enhance freshness.
- Fragrance modifier: masks unpleasant odors of other ingredients, making products more pleasant.
Frequently Asked Questions:
Q: Is L-Menthol the same as Menthol?
A: No. L-Menthol and Menthol usually refer to different things. Menthol refers to a broader category since it has eight isomers, each with different physical properties such as melting point, boiling point, and aroma. It is one of them, well known for its strong cooling effect and distinctive mint aroma.
Q: What is the difference between D-Menthol and L-Menthol?
A: L-Menthol is the levorotatory isomer of menthol, characterized by a refreshing, spicy sweetness and a strong cooling effect. D-Menthol is the dextrorotatory isomer, with a light camphor-like and woody aroma, and a milder cooling sensation. Therefore, L-Menthol is generally considered superior to D-Menthol in practical applications.
Q: How should menthol be stored?
A: It should be stored in sealed containers, kept in a cool, dry, and well-ventilated place, away from direct sunlight and high temperatures.
