(2E,4E)-2,4-Octadienal

CAS NO.：30361-28-5
Empirical Formula: C8H12O
Molecular Weight: 124.18
MDL number: MFCD00014676
EINECS: 250-147-1
SAFETY DATA SHEET (SDS)
Update Date: 2024-07-16 16:27:54

What is (2E,4E)-2,4-Octadienal?

Description

trans,trans-2,-4-Octadienal has a fatty, green, sour odor.

Chemical properties

trans, trans-2,4-Octadienal has a fatty, green, sour odor.

Occurrence

Reported found in roasted beef, lamb, mutton, wheat bread, cheese, cocoa beans, chocolate liquor, fresh salted salmon, sturgeon caviar, salmon roe, fish, salmon oil, pickled ham, grapes, oxidized milk, potato chips, peanuts, rice, roasted sesame seeds, prickly pear and black tea.

Definition

ChEBI: (E,E)-2,4-Octadienal is a fatty aldehyde.

Taste threshold values

Taste characteristics at 10 ppm: green, fruity, melon, citrus, tallow and fatty nuances.

Synthesis Reference(s)

Chemistry Letters, 8, p. 713, 1979
The Journal of Organic Chemistry, 23, p. 1580, 1958 DOI: 10.1021/jo01104a625

Properties of (2E,4E)-2,4-Octadienal

Boiling point:	88 °C10 mm Hg(lit.)
Density	0.875 g/mL at 25 °C(lit.)
refractive index	n20/D 1.526(lit.)
FEMA	3721 \| TRANS,TRANS-2,4-OCTADIENAL
Flash point:	174 °F
storage temp.	Inert atmosphere,Store in freezer, under -20°C
solubility	Chloroform (Soluble), Methanol (Slightly)
form	Oil
color	Pale Yellow
Odor	at 10.00 % in dipropylene glycol. green fatty reminiscent of pear melon peely
JECFA Number	1181
Stability:	Light Sensitive, Temperature Sensitive
NIST Chemistry Reference	2,4-Octadienal, (e,e)-(30361-28-5)
EPA Substance Registry System	2,4-Octadienal, (2E,4E)- (30361-28-5)