It is a colourless liquid, possessing a peppermint odour and boiling at 155° C. Nitric acid oxidizes it to adipic acid.
Mayer (Ann., 18 93, 2 75, p. 363) obtained azelain ketone, C,H140, a liquid of peppermint odour.
Owing to the climate other countries are less favoured, although lavender and peppermint are largely cultivated at Mitcham in Surrey, in Hertfordshire and Bedfordshire.
Lavender and peppermint oils of English origin rank as the best qualities.
Michigan produces the bulk of the peppermint crop of the United States, and it is in the front rank as a fruit-producing state.
The best known of these are cloves, pimento (allspice), myrtle, eucalyptus, caraway, fennel, dill, coriander, rosemary, lavender, peppermint, spearmint, nutmeg, cinnamon, sandal-wood, turpentine, juniper berries, valerian and sumbul.
Kalamazoo, Jackson, Washtenaw, Lenawee, Ingham, Bay and Muskegon are the leading celery-producing counties; the peppermint district is in the south-west corner of the state; and market gardening is an important industry both in the south-west and in the south-east counties.
It is a colourless liquid having a peppermint odour, and boiling at 178.5-179.5° C. Nitric acid oxidizes it to n-pimelic acid.
Straw-plaiting, malting, brewing, and the cultivation and distillation of lavender and peppermint are carried on.