TRANS,TRANS-2,4-HEPTADIENAL Property

Boiling point:

84-84.5 °C(lit.)

Density 

0.881 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.534(lit.)

Flash point:

150 °F

Odor

Citrus flavors, especially orange and tangerine. Can also be used for mouth feel in a variety of dairy type flavors.green pungent fruity spicy

Odor Type

green

LogP

1.891 (est)

CAS DataBase Reference

5910-85-0(CAS DataBase Reference)

EPA Substance Registry System

2,4-Heptadienal (5910-85-0)

Safety

Hazard Codes 

T

Risk Statements 

22-24-38

Safety Statements 

36/37-45

RIDADR 

UN 2810 6.1/PG 3

WGK Germany 

3

F 

10-23

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H311Toxic in contact with skin

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P361Remove/Take off immediately all contaminated clothing.

P362Take off contaminated clothing and wash before reuse.

P363Wash contaminated clothing before reuse.

P405Store locked up.

P501Dispose of contents/container to..…

TRANS,TRANS-2,4-HEPTADIENAL Chemical Properties,Usage,Production

Chemical Properties

Yellowish liquid. It has a grassy, fat, fruit and spice-like aroma. Flash point 60 ℃. Soluble in ethanol and most non-volatile oils, insoluble in water.

Uses

2,4-Heptadienal is mainly used for the preparation of blueberry, raspberry and miscellaneous fruit flavors.

Definition

ChEBI: (E,E)-hepta-2,4-dienal is a heptadienal in which the two double bonds are located at positions 2 and 4 (the E,E-geoisomer). It has a role as a flavouring agent.

Synthesis

2,4-Heptadienal is synthesized by reducing heptadienoic acid to heptadienol with LiAlH4 and then oxidizing it with MnO2.