A milder, more diffusive version of 2,6-nonadienal (violet leaf/cucumber aldehyde). It opens with a soft green cucumber-melon character, waxy and slightly fatty, without the sharp bite of the parent aldehyde. The acetal form is more stable and releases the green-aldehydic facet slowly, giving a fresh vegetal transparency.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 1014.
Colorless oily liquid.
Almost insoluble in water, soluble in alcohol and oils.
Powerful, fresh-green cucumber odor, less oily and, in proper dilution, much fresher and lighter than the odor of the aldehyde itself.
This acetal is occasionally used in perfume compositions as a modifier for the aldehyde. It is more versatile because it is generally fresher, not distinctly oily-vegetable, and its green notes can be used in novel citrus topnote compositions, and it also works well with galbanum and oakmoss in fruity-aldehydic modern fragrance types.
The acetal could find use in flavor compositions if it were permitted, but it is not specifically listed as G.R.A.S. by the American authorities.
Several of the manufacturing methods for the aldehyde rely upon the production of the acetal from which the aldehyde is subsequently liberated.