L-Menthol |
Menthol is made in the leaves of peppermint, which is the main component of peppermint oil, and is a type of cyclic monoterpene. It is a highly volatile essential oil produced by plants, and its components are mostly hemiterpenes, monoterpenes and sesquiterpenes, especially in warm climates. Some important plant pigments are terpenoid or terpenoid compounds. |
Bacis information |
CAS |
2216-51-5 |
English alias |
uspmenthol;(1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol;Cyclohexanol,5-methyl-2-(1-methylethyl)-, (1R,2S,5R)-;(−)-Menthol;(-)-p-Menthan-3-ol;L-MENTHOL;(1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol (5-Methyl-2-(1-methylethyl)cyclohexanol;(-)-Menthol;Cyclohexanol, 5-methyl-2-(1-methylethyl)-, [1R-(1α,2β,5α)]-;(−)-Menthol,(1R,2S,5R)-(−)-Menthol,(1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol;(−)-Menthol,(1R,2S,5R)-2-Isopropyl-5-methylcyclohexanol,5-Methyl-2-(1-methylethyl)cyclohexanol;L(-)-Menthol;L-MentholuM;LEVO-MENTHOL;Minclea;(1R,2S,5R)-2-isopropyl-5-methylcyclohexan-1-ol; |
Molecular formula |
C10H20O |
Molecular weight |
156.265 |
Accurate mass |
156.151 |
Psa |
20.23 |
Logp |
2.4395 |
Numbering system |
UNII |
|
BRN number |
1902293 |
EINECS number |
218-690-9 |
MDL number |
MFCD00062979 |
RTECS number |
OT0700000 |
PubChem number |
24882791 |
Physicochemical property |
Appearance and properties |
White crystal |
Density |
0.89 |
Boiling point |
212ºC |
Melting point |
41-43ºC |
Freezing point |
|
Flash point |
93ºC |
Refractive index |
1.46 |
Water solubility |
|
Stability |
Stable. |
Storage conditions |
-20ºC |
Safety information |
RTECS number |
|
Security description |
S26-S37/39 |
Danger category code |
R36/37/38; R41 |
WGK germany |
|
Dangerous goods transport code |
|
Customs code |
29061100 |
Hazard category |
GHS07 |
Packing Grade |
|
Hazard Prevention Note |
P305 + P351 + P338 |
Signal word |
Warning |
Danger mark |
Xi |
Production method and use |
Production method |
Menthol can be purified from natural peppermint crude oil or synthesized. The aboveground part (stem; Twig; The essential oil obtained by steam distillation is called peppermint crude oil, and the oil yield is 0.5-0.6. There are many ways of synthesizing thin synthetic brain. Both menthol and racemic menthol can be used as toothpaste. Perfume; An odorant used in beverages and sweets. In medicine, it is used as a stimulant, acting on the skin or mucous membranes, and has a cooling and itching relief effect. It can be taken internally as an antiseptic for headache and nose; Pharynx; Laryngitis, etc. Its esters are used in fragrances and medicines. |
Use |
Both menthol and racemic menthol can be used as toothpaste. Perfume; An odorant used in beverages and sweets. In medicine, it is used as a stimulant, acting on the skin or mucous membranes, and has a cooling and itching relief effect. It can be taken internally as an antiseptic for headache and nose; Pharynx; Laryngitis, etc. Its esters are used in fragrances and medicines. In the world, China and Brazil are the main natural mint producers, and the annual output of peppermint oil reaches 2000-3000t. |