Tetrahydro ionone has a soft, radiant floral-woody character reminiscent of ionones but rounder and less powdery. It suggests violet petals and orris with a warm, slightly fruity woody undertone, and diffuses gently without the sharp edge of alpha- or beta-ionone.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 1290.
Almost colorless oily liquid.
Practically insoluble in water, soluble in alcohol and oils.
The title material has an unquestionable Cedarwood-like odor, and that is, of course, not very exciting. It does not have the soft or velvety notes of the Ionones, nor does it display any of the oily-floral notes of hydrogenated Pseudo-ionones.
Apart from occasional use in special variations of the Jonone themes and as a supporting note in perfumes with Ambre emphasis, the title material has very little importance.
Produced by controlled hydrogenation of Ionone (alpha- or beta-) with a Platinum catalyst. Complete hydrogenation may lead to the alcohol (Tetrahydro ionol).