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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



unsaturated ketones of the cyclohexene series, with similar pleasant odors. Ionones are colorless liquids with high boiling point. They are readily soluble in alcohol. Ionones include Ionone proper as well as its homologs methylionone, isomethylionone, and irone. Ionones have several isomers, of which the a-isomers exhibit the most delicate and refined odors. In weak solutions, Ionone has the odor of violet, methylionone and isomethylionone have the odor of violet tinged with orris-root, and irone has the odor of orrisroot tinged with violet.

Ionone is contained in some fruit and essential oils. Methylionone and isomethylionone have not been found in nature, whereas irone is the main constituent (60–80 percent) of the essential oil prepared from orrisroot.

In industry, Ionone, methylionone, and isomethylionone are obtained from citral. Irone is obtained from methylcitral (usually in the form of isomer mixtures). Ionones are widely used in the production of perfumes and colognes and in the aromatization of cosmetics. /3-Ionone is also used in the production of vitamin A.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
(14,15,17,21) The essential oil (about 0.1%), known as "Orris butter", consists of about 85% myristic acid, with irone (odiferous constituent with violet-like odor), [gamma]-dihydro-irones, ionone, methyl myristate (22,30), and other substances such as fat, resin, starch, mucilage, bitter principle, glycoside--iridin, and small amount of tannin.
widespread ionones, and derivatives of smaller terpenoids (Winterhalter
Certain panelists exhibited ketones and residuals of cosmetic products such as linalool, dihydromethyl jasmonate, ionones, glycols, BHT and silicone.