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W342904

Sigma-Aldrich

trans,trans-2,4-Hexadienal

≥80%

Synonym(s):

(E,E)-2,4-Hexadienal, Sorbaldehyde, Sorbic aldehyde

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About This Item

Linear Formula:
CH3CH=CHCH=CHCHO
CAS Number:
142-83-6
Molecular Weight:
96.13
FEMA Number:
3429
Beilstein:
1698401
EC Number:
205-564-3
Council of Europe no.:
640
MDL number:
MFCD00007004
UNSPSC Code:
12164502
PubChem Substance ID:
24901700
Flavis number:
5.057
NACRES:
NA.21

biological source

synthetic

vapor density

>1 (vs air)

Assay

≥80%

refractive index

n20/D 1.541 (lit.)

bp

69 °C/20 mmHg (lit.)

density

0.895 g/mL at 20 °C
0.871 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

Organoleptic

green; fruity; citrus

storage temp.

2-8°C

SMILES string

[H]C(=O)\C=C\C=C\C

InChI

1S/C6H8O/c1-2-3-4-5-6-7/h2-6H,1H3/b3-2+,5-4+

InChI key

BATOPAZDIZEVQF-MQQKCMAXSA-N

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General description

trans,trans-2,4-Hexadienal is a volatile is a flavor compound that is reported to occur in different types of tea.

Disclaimer

For R&D or non-EU Food use. Not for retail sale.

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H301 + H311,H314,H317

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

154.0 °F - closed cup

Flash Point(C)

67.77 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Comparison of catechins and volatile compounds among different types of tea using high performance liquid chromatograph and gas chromatograph mass spectrometer.
Wang K, et al.
International Journal of Food Science and Technology, 46(7), 1406-1412 (2011)
National Toxicology Program technical report series, (509)(509), 1-290 (2004-03-05)
2,4-Hexadienal, a colorless to yellow liquid with a pungent "green" or citrus odor, is used as a food additive for flavor enhancement, as a fragrance agent, as a starting material or intermediate in synthetic reactions in the chemical and pharmaceutical
Ping C Lee et al.
Toxicology letters, 136(3), 173-181 (2002-12-31)
Since a number of food and food products contain 2,4-hexadienal (HX), an unsaturated aldehyde, human exposure to HX is likely. Long term HX feeding to rodents induces forestomach cancers. Aldehyde dehydrogenases (ALDH) are key enzymes in the stomach for the
C Janzowski et al.
Mutagenesis, 18(5), 465-470 (2003-09-10)
Alpha,beta-unsaturated carbonyl compounds occur in food and other environmental media. Due to their reactivity with cellular nucleophiles (e.g. Michael adduct formation with DNA bases and with glutathione) they might represent a potential health risk. In this study, induction of oxidative
Po C Chan et al.
Archives of toxicology, 77(9), 511-520 (2003-07-25)
2,4-Hexadienal (2,4-Hx) was studied for its toxicity and carcinogenicity because of its alpha, beta-unsaturated aldehyde structure and potential link between exposure to lipid peroxidation products in the diet and human malignancies. Male and female F344N rats and B6C3F1 mice received
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