(E)-2-Octenal Chemical Properties

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)

color 

Colourless

Odor

at 1.00 % in dipropylene glycol. fresh cucumber fatty green herbal banana waxy green leaf

Odor Type

fatty

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

LogP

2.64

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

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

WGK Germany 

3

RTECS 

RH2130000

TSCA 

Yes

HS Code 

29121900

Toxicity

dnd-ham-fbr 250 mmol/l/1H MUREAV 497,185,2001

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

(E)-2-Octenal Usage And Synthesis

Chemical Properties

Colorless liquid

Uses

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

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.

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