Melted menthol flakes are derived from Mentha oil, which is found in strong aromatic herb called mint (pudina). Menthol flake is a transparent, white liquid with strong minty herbal odour which is obtained from a perennial herb called Mint (Mentha arvensis) belonging to the Labiatae family.
India is the largest producer and exporter of menthol flakes producing as much as 70% of world total production. Other major producers are China, Brazil, the US and Japan. Major importers are Germany, France etc. About 50% of total Menthol flakes production is exported to China, whereas menthol crystals are exported to US and European countries. Cultivation of mint in India starts from February - March every year and the crop takes around 90 days to mature and produces first flowers, which is the best stage to harvest. First harvesting is done during May - June. Farmers undertake at least two harvesting from the crop. Menthol flakes production in India begins from mid-June and steady arrivals are seen till November.
Menthol oil liquid is rotated in centrifuge to separate oil and flakes where largely 30% is oil and 70% is flakes. Menthol flakes are melted and packed in 180 kg galvanised iron barrel and Menthol flakes are further processed to obtain Menthol crystals.
Menthol flakes has many medicinal and other beneficial qualities such as relieving pains, reduces acne,etc. Because of its strong mint odour it's used in making chewing gums, toothpastes, and mouth wash.
Colourless/white transparent powdery flakes
Strong minty, aromatic, herbal odour
-0.885 to 0.899 @ 35°C
-1.450 to -1.462 @ 35°C
L-Menthol 95% Minimum
212°C @ 760 mm Hg
-43° to 45° for L-Menthol, -5 for D-Menthol @ 25°C
100% Pure and Natural
Very soluble in ethanol; insoluble in water