Chemical Properties
Undecanal is a colorless liquid with a sweetish, fatty odor with an orange and rose undertone. It has a characteristic flavor. This chemical tends to polymerize unless tightly sealed. It is soluble in oils and alcohol, but insoluble in glycerol and water. Additionally, it is combustible.
Occurrence
Reported found in essential oils of citrus peels, lemon, caviar, cooked beef, chicken, lamb, pork, coriander leaf,
cucumber, fish, grapefruit juice, apple, orange juice, bilberry, cranberry, raspberry, blackberry, carrot, celery, baked potato, Gruyere
cheese, Russian cheese, butter, milk, fatty fish, hop oil, beer, cognac, tea, peanut oil, pecan, starfruit, coriander seed, rice, calamus,
buckwheat, red sage, loganberry and maté.
Taste threshold values
Taste characteristics at 10 ppm: waxy, buttery, aldehydic, soapy with a citrus note and slight laundry detergent
nuance.
References
C.M Paleos Angelos Malliaris. Chemical evidence concerning the solubilization site of undecanal in micelles. Journal of Colloid and Interface Science. 1981, 82 (1), 244-247. DOI:
10.1016/0021-9797(81)90145-4George W. Mushrush, Robert N. Hazlett, Harold G. Eaton. Liquid-phase oxidation of undecanal by tert-butyl hydroperoxide in dodecane. Ind. Eng. Chem. Prod. Res. Dev. 1985, 24 (2), 290-293. DOI:
10.1021/I300018A023Kinetic Modeling of Rhodium‐Catalyzed Reductive Amination of Undecanal in Different Solvent Systems DOI:
10.1002/cite.201900135Chen Wen-kan. Synthesis of Undecanal by Selective Oxidation of Undecanol. Chemistry 2015
