Menthol
Menthol is an organic compound. It is derived from the oils of corn mint, peppermint, or other mints. It can also be made artificially. It is a waxy, crystalline substance. It is white in color. It is a solid at room temperature. It melts at a temperature that is a little bit higher than room temperature.
Menthol has local anaesthetic qualities, and reduces irritation of the throat.
Mentha arvensis is the main type of mint used to make natural menthol crystals. It is mainly grown in the Uttar Pradesh region in India.[1]
Natural menthol is made by freezing peppermint oil and separating methanol from the frozen the peppermint oil by filtration.[2]
Uses
It is used as an antipruritic to reduce itching. It is used to relieve muscle cramps, sprains and headaches. It is used in some medicines to treat sunburns. It is used as a pesticide against tracheal mites. In organic chemistry, menthol is used as a chiral auxiliary in asymmetric synthesis.
Menthol Media
Structures of menthol isomers
Menthol chair conformation
Ball-and-stick 3D model highlighting menthol's chair conformation
A macro photograph of menthol crystals
Menthol crystals at room temperature. Approx. 1 cm in length.
Menthol biosynthesis image
Synthetic menthol production
- Mentholreactions
References
- ↑ PDR for herbal medicines. Thomson Healthcare (Firm) (4th ed.). Montvale, NJ: Thomson. 2007. ISBN 978-1-56363-678-3. OCLC 156817834.
{{cite book}}: CS1 maint: others (link) - ↑ Kirk-Othmer. (2012). Kirk-Othmer Chemical Technology of Cosmetics. Hoboken: Wiley. ISBN 978-1-118-51898-4. OCLC 823726450.
