What is ESSENTIAL OILS?

are the volatile oils or essences formed naturally in various trees and plants, such as oil of turpentine, eucalyptus oil, camphor oil, etc. Many of them, including those already named, are in the main hydrocarbons, and are characterized by their various constituent terpenes, which are isomeric bodies having the general chemical formula C10H1S. Others contain in addition oxidi/,ed substances of the nature of alcohols or ketones and some small quantities of sulphur or nitrogen. Pine and fir trees are widely distributed in nature, and the turpentine oil which ihey yield is by no means uniform in constitution. Russian, American, German, Venetian, Swiss, Swedish, French, and Indian oils all differ in the nature or proportions of the various terpenes contained in them and their other constituents. The essential oils have characteristic odours and are all inflammahle, insoluble in water, but soluble

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Definition of  ESSENTIAL OILS