| abstract |
A liquid ℓ-n-menthol composition contains 30 to 80% by weight of (-)-n-isopulegol and is prepared by mixing 20 to 70 parts of liquid menthol at a temperature of not lower than 42°C, as obtained in the production of ℓ-n-menthol, with 30 to 80 parts by weight of (-)-n-isopulegol. 20 - 80% by weight of the (-)-n-isopulegol may be replaced with 3-ℓ-n-menthoxypropane-1,2-diol. The liquid ℓ-n-menthol composition is a cheaper replacement for conventionally-available menthol and yet has an improved feeling of coolness (the bitterness in particular being reduced); moreover, the composition has excellent workability and hygienic properties in use. By replacing part of the (-)-n-isopulegol component with 3-ℓ-n-menthoxypropane-1,2-diol, both the odor of menthol and the irritation of the skin by menthol can be softened, and the feeling of mildness enhanced. |