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L-Menthol(CAS#2216-51-5)

Chemical Property:

Molecular Formula C10H20O
Molar Mass 156.27
Density 0.89 g/mL at 25 °C (lit.)
Melting Point 41-45 °C (lit.)
Boling Point 212 °C (lit.)
Specific Rotation(α) -51 º (589nm, c=10, EtOH)
Flash Point 200°F
Water Solubility insoluble
Solubility Soluble in organic solvents such as ethanol, acetone, ether, chloroform and benzene, slightly soluble in water.
Vapor Presure 0.8 mm Hg ( 20 °C)
Appearance Colorless needle crystal
Specific Gravity 0.89
Color Colorless to white
Merck 14,5837
BRN 1902293
pKa 15.30±0.60(Predicted)
Storage Condition Store below +30°C.
Stability Stable.
Refractive Index 1.46
MDL MFCD00062979
Physical and Chemical Properties Colorless needle-like crystals with a cool aroma of mint. Relative density d1515 = 0.890, melting point 41~43 ℃, boiling point 216 ℃,111 ℃(2.67kPa), specific optical rotation αD20 =-49.3 °, refractive index nD20 = 1.4609. Soluble in ethanol, acetone, ether, chloroform and benzene and other organic solvents, water-soluble. The chemical properties are relatively stable, and can be volatilized with steam. Rat oral LD503.3g/kg,ADI0 ~ 0.2 mg/kg(FAO/WHO,1994).

Product Detail

Product Tags

Hazard Symbols Xi – Irritant
Risk Codes R37/38 – Irritating to respiratory system and skin.
R41 – Risk of serious damage to eyes
R36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S39 – Wear eye / face protection.
S37/39 – Wear suitable gloves and eye/face protection
S36 – Wear suitable protective clothing.
WGK Germany 2
RTECS OT0700000
TSCA Yes
HS Code 29061100
Toxicity LD50 orally in Rabbit: 3300 mg/kg LD50 dermal Rabbit > 5000 mg/kg

 

Introduction

Levomenthol is an organic compound with the chemical name (-)-menthol. It has the fragrance of essential oils and is a colorless to light yellow liquid. The main component of levomenthol is menthol.

 

Levomenthol has a range of physiological and pharmacological activities, including antibacterial, anti-inflammatory, analgesic, antipyretic, anthelmintic and other effects.

 

A common method for making levomenthol is through distillation of the peppermint plant. The mint leaves and stems are first heated in a water still, and when the distillate is cooled, an extract containing levomenthol is obtained. It is then distilled to purify, concentrate, and isolate menthol.

 

Levomenthol has a certain safety, but it is still necessary to pay attention to the following: avoid prolonged exposure or inhalation of high concentrations of levomenthol to prevent allergies or irritation. A well-ventilated environment should be maintained during use. Avoid contact with eyes and skin and dilute before use.


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