


Menthol (MF: C₁₀H₂₀O, MW: 156.27) is a cyclic monoterpenol compound; its chemical name is 1-methyl-4 -isopropylcyclohexanol. It appears as colorless needle-like or prismatic crystals or a white crystalline powder, possesses a strong, refreshing minty aroma, has a taste that is initially pungent followed by a cooling sensation, and is sublimable. Its ethanol solution is neutral. It is widely used in the pharmaceutical, personal care, and food industries.
| Item | Specification |
| Melting Point | 34–36°C (lit.) |
| Boiling point | 216°C (lit.) |
| Density | 0.89 g/mL at 25°C (lit.) |
| Flash point | 93.3°C |
| Vapor pressure | 0.8 mmHg (20°C) |
| Refractive index | 1.4615 |
| Solubility | Very soluble in ethanol (95%), chloroform, diethyl ether, and liquid paraffin; slightly soluble in water (0.4 g/L at 25°C) |
| Stability | Stable; flammable; avoid contact with strong oxidizing agents |
Medical Applications: Menthol is used in the production of mentholated oil, anti-itch ointments, throat lozenges, and nasal decongestants to provide a cooling, itch-relieving effect, relieve nasal congestion, and alleviate swelling and pain.
Food Industry: L-Menthol is used to formulate mint-flavored food flavorings for chewing gum, frozen desserts, candies, and beverages to enhance flavor and provide a cooling sensation.
Personal Care Products: Added to toothpaste, mouthwash, hair and skin care products, and fragrances to provide a refreshing scent, invigorate the senses, and soothe the skin.
Other Uses: Levomenthol is used in tobacco flavoring; also serves as a raw material for fine personal care fragrances and as an antimicrobial adjuvant.
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