DL-Menthol powder Raw Materials CAS 89-78-1

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Uses and synthesis of DL-Menthol powder

DL-Menthol powder is a chemical agent, DL-Menthol CAS 89-78-1 is extracted from the leaves and stems of peppermint, white crystals, molecular formula C10H20O, is the main ingredient in peppermint and peppermint essential oil. In the world, China and Brazil are the main producers of natural mint, and the annual output of mint oil reaches 2000-3000t.

DL-Menthol Raw Materials and Menthol are used as flavorings in toothpaste, perfume, beverages and candies, etc. DL-Menthol powder is used as a stimulant in medicine and acts on the skin.

DL-Menthol CAS 89-78-1 has the functions of antipruritic, analgesic, antiseptic, stimulating, anesthesia, cooling and anti-inflammatory, and can be used to treat headache, neuralgia, itching, respiratory inflammation, atrophic rhinitis, mute, etc. It is widely used in cigarettes, cosmetics, toothpaste, perfumes, beverages and candies. It is widely used in cigarettes, cosmetics, toothpaste, perfume, eau de toilette, beverages and candies.

Applications / Functions of DL-Menthol powder

1. DL-Menthol CAS 89-78-1 can be used as edible flavors, flavor enhancers, and can be used in candies (mints, gummies), beverages, ice cream, etc. DL-Menthol powder and spinosyn can be used as aroma enhancers for toothpaste, perfume, beverages and candies.
2. DL-Menthol Raw Materials is used as stimulant in medicine, acting on skin or mucous membranes, with cooling and anti-itching effect; internally used as wind-repellent, used for headache and inflammation of nose, throat and larynx; its ester is used in spices and medicines.

Physicochemical Property of DL-Menthol powder

DL-Menthol powder has the functions of antipruritic, analgesic, antiseptic, stimulating, anesthesia, refreshing and anti-inflammatory, and can be used to treat headache, neuralgia, itching, respiratory inflammation, atrophic rhinitis, mute, etc. It is widely used in cigarettes, cosmetics, toothpaste and cosmetics. A large number of cigarettes, cosmetics, toothpaste, perfume, eau de toilette, beverages and candy and other flavorings.

Levulin is colorless needle crystal. Melting point 42-43 ° C, boiling point 216 ° C, specific optical rotation -51 ° -45 °, flash point 93 ° C, relative density of 0.8810, soluble in ethanol, and miscible with oils.DL-Menthol Raw Materials has a cool, fresh, pleasant mint characteristic aroma, with a sweet spiky air. It gives a cold, penetrating aroma, but is not long lasting. The taste is also fresh, sweet and cool.

Production methodprocess of DL-Menthol powder

• Production methodprocess of DL-Menthol powder

Using the property that citronella aldehyde can be easily cyclized into isomenthol, dextro citronella aldehyde is cyclized into levo-isomenthol by using an acid catalyst (e.g., silica gel), and then the levo-isomenthol is separated and hydrogenated to produce levo-menthol. Its stereo mentor construct can be partially converted to dextro citronellal by thermal cracking and recycled.

• Manufacture from thymol

Alkylation of m-cresol in the presence of aluminum m-cresol produces thymol. Catalytic hydrogenation yielded all four pairs of menthol stereoisomers (i.e., racemic menthol; racemic neomenthol; racemic isomenthol and racemic neoisomenthol). The isomers were isolated and optically split by distillation, elimination of the racemic menthol fraction, and repeated recrystallization after manufacture of the esters. The isolated levo-menthol esters were saponified to give DL-Menthol CAS 89-78-1.

• Manufacture from peppermint oil

Peppermint oil was frozen and crystallized, and the crystals obtained by centrifugation were recrystallized with a low-boiling solvent to obtain pure levomenthol. After removing the crystallization of the mother liquor still contains menthol 40% ~ 50%, also contains a large number of menthone, by hydrogenation into a mixture of levo-menthol and dextro-neo-menthol. More levo-menthol can be obtained by saponifying the ester portion and splitting off the rest of the peppermint oil after crystallization, distillation or making its borate ester.

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