Is 2,4-HEXADIENAL safe to use in EU cosmetics?

2,4-HEXADIENAL is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 142-83-6?

CAS 142-83-6 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains 2,4-HEXADIENAL?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 4014002/03/2011

2,4-HEXADIENAL

Trans,trans-2,4-Hexadienal

2,4-HEXADIENAL is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 142-83-6

CAS 142-83-6PubChem CID 637564

2,4-Hexadienal

(E,E)-2,4-hexadienal is a hexadienal that is hexanal with trans double bonds at positions 2 and 4. It is found in tomatoes, kiwi fruit, mangoes, potato chips, herbs and spices. It has a role as a flavouring agent and a plant metabolite. It is a volatile organic compound, a hexadienal and a polyunsaturated fatty aldehyde. — ChEBI

IUPAC name: (2E,4E)-hexa-2,4-dienal

Molecular formula: C6H8O
Molecular weight: 96.13 g/mol
Exact mass: 96.057514874 Da
XLogP3: 1.2
Topological polar surface area: 17.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

878K4I6N7TRefChem:443894617-079-8Sorbaldehyde(E,E)-2,4-hexadienalSorbic aldehydetrans,trans-2,4-Hexadienal2,4-Hexadienal, (2E,4E)-

16 more reported names

(2E,4E)-2,4-Hexadienal2,4-Hexadienal, (E,E)-trans,trans-Hexa-2,4-dienalFEMA No. 34292,4-Hexadienal, trans,trans-Hexadienal(E,E)-2,4-Hexadien-1-al2-Propyleneacrolein3-Propyleneacrolein2,4-Hexadienal (89% trans,trans-, 11% cis,trans-)1,3-Pentadiene-1-carboxaldehydeCCRIS 4030HSDB 7239(2E,4E)-HexadienalEINECS 205-564-32,4-(e-e)-hexadienal

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:82334
ChEMBL:CHEMBL1576086
EPA DTXSID:DTXSID2025391

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for 2,4-HEXADIENAL

INCI name

2,4-HEXADIENAL

Description

Trans,trans-2,4-Hexadienal

Record provenance

Inventory reference: 40140
Imported identity: 2,4-HEXADIENAL
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for 2,4-HEXADIENAL

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Key data

CAS

142-83-6

205-564-3

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

2,4-DIMETHYLBENZYLACETATEPERFUMING

2,4-DIMETHYLCYCLOHEXYLMETHYL ACETATEPERFUMING

2,4-DIMETHYLHEPTA-2,2-DIENALPERFUMING

2,4-DIMETHYLPYRIDINEPERFUMING

2,4-HEXADIENOLPERFUMING

2,4-HEXADIENYL ACETATEPERFUMING

2,4-XYLENOLPERFUMING

2,5,5-TRIMETHYL-2-PHENYL-1,3-DIOXANEPERFUMING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How 2,4-HEXADIENAL appears in the CosIng inventory

The CosIng inventory lists 2,4-HEXADIENAL as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

2,4-HEXADIENAL is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

2,4-HEXADIENAL is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, 2,4-HEXADIENAL carries the following function designation(s):

PERFUMING

CAS 142-83-6 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for 2,4-HEXADIENAL

This page reproduces the CosIng inventory entry for 2,4-HEXADIENAL from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research 2,4-HEXADIENAL and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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