(E)-2-Octenal

CAS NO.：2548-87-0
Empirical Formula: C8H14O
Molecular Weight: 126.2
MDL number: MFCD00007011
EINECS: 219-833-8
SAFETY DATA SHEET (SDS)
Update Date: 2026-04-03 14:17:14

What is (E)-2-Octenal?

Chemical properties

Colorless liquid

The Uses of (E)-2-Octenal

trans-2-Octenal is one of the probable major contributors to the Californian long-grain cooked rice odor.

What are the applications of Application

trans-2-Octenal is a cause of defects for locomotion in green fluorescent protein (GFP)

Definition

ChEBI: The (E)-isomer of oct-2-enal.

Synthesis Reference(s)

The Journal of Organic Chemistry, 51, p. 2607, 1986 DOI: 10.1021/jo00363a043
Journal of the American Chemical Society, 93, p. 1724, 1971 DOI: 10.1021/ja00736a027
Tetrahedron, 39, p. 3207, 1983 DOI: 10.1016/S0040-4020(01)91568-6

General Description

The rate constant for the gas-phase reaction of the NO(3) radical with trans-2-octenal was studied using absolute rate method. The fungal volatile organic compound trans-2-octenal, caused locomotory defects and changes in green fluorescent protein (GFP) and antigen-labeled dopaminergic neurons in adult Drosophila melanogaster.

Safety Profile

Mutation data reported. Whenheated to decomposition it emits acrid smoke andirritating vapors.

Properties of (E)-2-Octenal

Melting point:	3.5°C (estimate)
Boiling point:	84-86 °C19 mm Hg(lit.)
Density	0.846 g/mL at 25 °C(lit.)
vapor density	>1 (vs air)
refractive index	n20/D 1.45(lit.)
FEMA	3215 \| 2-OCTENAL
Flash point:	150 °F
storage temp.	2-8°C
solubility	Chloroform (Soluble), Methanol (Slightly)
form	neat
color	Colourless
Odor	at 1.00 % in dipropylene glycol. fresh cucumber fatty green herbal banana waxy green leaf
Water Solubility	Not miscible or difficult to mix in water. Soluble in alcohol and fixed oils.
Sensitive	Air Sensitive
JECFA Number	1363
Stability:	Air Sensitive, Light Sensitive
CAS DataBase Reference	2548-87-0(CAS DataBase Reference)
NIST Chemistry Reference	2-Octenal, (E)-(2548-87-0)
EPA Substance Registry System	2-Octenal, (2E)- (2548-87-0)

Safety information for (E)-2-Octenal

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.