Ethyl Undecylenate, with CAS number 692-86-4, is a synthetic aroma chemical commonly used in perfumery for its unique olfactory properties. It is characterized by a fresh, slightly fruity, and waxy scent profile, which can add a subtle complexity to fragrance compositions. Ethyl Undecylenate is often utilized in the formulation of floral and fruity accords, where it can enhance the overall freshness and provide a smooth transition between different notes. In a typical formula, it may be found in the heart or base notes, contributing to the longevity and depth of the fragrance. As with many synthetic aroma chemicals, it is important to consider safety and regulatory aspects when using Ethyl Undecylenate in formulations. While specific restrictions may vary, it is advisable to consult the latest IFRA guidelines and safety data sheets to ensure compliance with safety standards and to assess any potential allergenic effects. Overall, Ethyl Undecylenate serves as a versatile ingredient in the perfumer's palette, offering both functional and aesthetic contributions to fragrance design. — AI-generated summary, 2026-09-02.
A soft fruity-waxy ester with a fatty, slightly oily character reminiscent of pear skin and rose petals. Develops a mild green-floral facet, subtle and rounded rather than sharp.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 554.
Colorless oily liquid.
Insoluble in water, soluble in alcohol and oils. Somewhat soluble in propylene glycol.
Pleasant fruity-winey odor, more winey than floral.
Oily-winey, slightly fruity taste.
This ester is used in perfume compositions as part of the floral complex in Cassie, Jasmin, Rose, Violet, Ylang-Ylang, Tuberose and in Oriental fragrance types. It has a softening effect upon the conventional topnote materials, and it blends well with the finer grades of Citrus oils, particularly Bergamot and Bitter Orange.
It is also used in flavor compositions, e.g. for imitation Cognac, Brandy, Rum, Coconut, Quince and in Fruit and Nut complexes.
Produced by direct esterification of Ethanol with Undecenoic acid under azeotropic conditions.