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trans,trans-2,4-Nonadienal Basic information
trans,trans-2,4-Nonadienal Chemical Properties
Safety Information
  • Safety Statements 24/25
  • RIDADR NA 1993 / PGIII
  • WGK Germany 3
  • HS Code 29121900
trans,trans-2,4-Nonadienal Usage And Synthesis
  • Chemical Properties2,4-Nonadienal has a strong fatty, floral odor.
  • Chemical Propertiesclear colorless to yellow liquid
  • OccurrenceReported found in oxidized flavor of skim milk, in peas by enzymatic formation from lipids, salmon oil, sunflower oil (cis-, trans-, and trans, trans-form), the autooxidation of lard, frozen peas, tomatoes and as a volatile component in fish products. Also reported found in cranberry, asparagus, wheat bread, caviar, Russian cheeses, chicken, cooked beef, mutton, lamb and pork, cognac, filberts, peanuts, popcorn, oatmeal, soybean, olive, beans, mushrooms, Brazil nut, rice and buckwheat.
  • UsesFood additive.
  • Aroma threshold valuesDetection: 0.05 ppb; aroma characteristics at 1.0%: green, fatty melon, cucumber and vegetative
  • Taste threshold valuesTaste characteristics at 2 ppm: green, cucumber with fatty melon and chicken nuances
  • Safety ProfileWhen heated to decomposition it emits acrid smoke and irritating fumes.
  • Chemical SynthesisBy reduction with LiAlH4 of dienoic acid prepared by the Doebner synthesis, followed by oxidation of the resulting dienol with MnO2 to the corresponding 2,4-dienol
trans,trans-2,4-Nonadienal Preparation Products And Raw materials
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