Synonyms: alpha-trans-gamma-trans-sorbic acid;(2E,4E)-hexa-2,4-dienoic acid;Hexadienoic acid, (E,E);2,4-Hexadienoic acid;trans,trans-sorbic acid;trans,trans-2,4-hexadienoic acid;hexa-2,4-dienoate;hexadienoic acid;hexa-2,4-dienoic acid;1,3-pentadiene-1-carboxylic acid;2,4-hexadienoic acid, (2E,4E)-;(2-butenylidene)acetic acid;crotylidene acetic acid;(E,E)-2,4-hexadienoic acid;2-Propenylacrylic acid;2,4-Hexadienoic acid,(2E,4E)-;2,4-Hexadienoic acid; Sorbic acid;2, 4—hexadienic acid;