Product name : Menthol

Other names : 3-p-Menthanol,Hexahydrothymol,Menthomenthol,peppermint camphor

CAS # : 89-78-1

Items                            Properties
Molecular formula     C₁₀H₂₀O
Molar mass                156.27 g mol−1
Appearance                White or colorless,crystalline solid
Density                        0.890 g·cm−3, solid(racemic or (−)-isomer)
Melting point              36–38 °C (311 K), racemic
                                     42–45 °C (318 K), (−)-form (α)
                                     35-33-31 °C, (−)-isomer
Boiling point               212 °C (485 K)
Solubility in water      Slightly soluble, (−)-isomer
Flash point                 93 °C

Characteristics and Application :

Menthol is an organic compound made synthetically or obtained from peppermint or other mint oils. It is a waxy, crystalline substance, clear or white in color, which is solid at room temperature and melts slightly above. The main form of menthol occurring in nature is (−)-menthol, which is assigned the (1R,2S,5R) configuration. Menthol has local anesthetic and counterirritant qualities, and it is widely used to relieve minor throat irritation. Menthol also acts as a weak Kappa Opioid Receptor Agonist.

Menthol is contained in non-prescription products for short-term relief of minor sore throat and minor mouth or throat irritation, for example in lip balms and cough medicines. It is classed as an antipruritic, which reduces itching. Menthol is also contained in combination products used for relief of muscle aches, sprains, and similar conditions, as well as in decongestants. In addition, it is used as an additive in certain cigarette brands, both for flavor and to reduce the throat and sinus irritation caused by smoking. Menthol is a common ingredient in mouthwash.

Use :

Because of its cooling effect, menthol is used in products meant to relieve skin irritation, sore throat, or nasal congestion. It may be used to treat sunburn, fever, or muscle aches as well. In traditional Asian medicine, menthol may be prescribed for nausea, diarrhea, indigestion, headache, cold, or sore throat. When used as a supplement for health reasons, menthol is usually taken in the form of peppermint oil. Products that commonly contain menthol include toothpaste, cough drops, lip balm, mouthwash, gum, and cigarettes.