TRANS-2-DODECENAL Chemical Properties

Melting point:

2°C (estimate)

Boiling point:

93 °C0.5 mm Hg(lit.)

Density 

0.849 g/mL at 25 °C(lit.)

vapor pressure 

34Pa at 25℃

refractive index 

n20/D 1.457(lit.)

Flash point:

>230 °F

form 

Liquid

color 

Colorless to light yellow

Odor

at 1.00 % in dipropylene glycol. citrus metallic mandarin orange waxy aldehydic

Odor Type

herbal

Water Solubility 

3.21mg/L at 20℃

BRN 

2434537

LogP

4.892 at 25℃

CAS DataBase Reference

20407-84-5(CAS DataBase Reference)

EPA Substance Registry System

2-Dodecenal, (2E)- (20407-84-5)

Safety Information

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45

RIDADR 

UN 1760 8/PG 3

WGK Germany 

2

RTECS 

JR5150000

F 

10-23

HS Code 

2912.19.5000

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

TRANS-2-DODECENAL Usage And Synthesis

Chemical Properties

2-Dodecenal is a colorless liquid with a powerful aldehydic, mandarin, citrus-like odor. It may be prepared as described earlier, see 2-hexenal,. 2-Dodecenal is used in flavors and fragrances to create orangemandarin- like citrus notes.

Chemical Properties

2-Dodecenal has a powerful, fatty, citrus-like odor at low levels and a mandarin taste.

Occurrence

Reported found in orange peel oil, kumquat peel oil, milk (0.0006 ppm), grilled and roasted beef, cured pork, roasted peanut (0.02 to 0.11 ppm), coriander leaf and unprocessed rice. Its presence has also been reported in the essential oils of Eryngium facidum and Achasma walang Val.

Uses

Trans-2-Dodecenal is a component of essential oils from Cymbocarpum anethoides and a volatile compound of virgin rapeseed oil.

Definition

ChEBI: A trans-2,3-unsaturated fatty aldehyde that is (E)-dodec-2-ene in which the allylic methyl group has been oxidised to the corresponding aldehyde.

Preparation

By condensation of acetaldehyde with decanal; also from α-bromolauric acid by way of the ethyl ester and alcohol.

Aroma threshold values

Detection: 1.4 ppb; aroma characteristics at 0.1% in neobee oil: fatty, waxy, metallic, fatty tallow, greasy, meaty, green vegetative cucumber with chicken and cilantro notes.

Taste threshold values

Taste characteristics at 0.1 ppm: strong aldehydic, soapy, vegetative green, celery and cucumber-like, banana musty, chicken fatty and brothy.

Flammability and Explosibility

Non flammable

Trade name

Mandarin Aldehyde (Firmenich).

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