Is CIS-4-DECENAL safe to use in EU cosmetics?

CIS-4-DECENAL 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 21662-09-9?

CAS 21662-09-9 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 CIS-4-DECENAL?

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 3950202/03/2011

CIS-4-DECENAL

(Z)-4-Decenal

CIS-4-DECENAL 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 21662-09-9

CAS 21662-09-9PubChem CID 5362620

4-Decenal, (4Z)-

4-Decenal is a monounsaturated fatty aldehyde. — ChEBI

IUPAC name: (Z)-dec-4-enal

Molecular formula: C10H18O
Molecular weight: 154.25 g/mol
Exact mass: 154.135765193 Da
XLogP3: 3.1
Topological polar surface area: 17.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

cis-4-Decenal(Z)-4-Decenal(4Z)-4-Decenal5R675PGU7K(Z)-4-Decen-1-alUNII-5R675PGU7KEINECS 244-514-54-DECENAL, CIS-

15 more reported names

(Z)-4-DECENAL [FCC]RefChem:98688CWRKZMLUDFBPAO-SREVYHEPSA-Ncis-4-Decen-1-al4Z-Decenal(4z)-dec-4-enal4-DECENAL, (Z)-4-cis-Decenalcis-4-Decenal, >=93%, stabilized, FGCAS-21662-09-9cis-4-Decenal (>90%)p-Hydroxydiphenylmethane carbamicCHEBI:90056Tox21_300829cis-4-Decenal, technical grade, 80%

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:90056
EPA DTXSID:DTXSID5041514
PubMed:14584678

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 CIS-4-DECENAL

INCI name

CIS-4-DECENAL

Description

(Z)-4-Decenal

Record provenance

Inventory reference: 39502
Imported identity: CIS-4-DECENAL
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for CIS-4-DECENAL

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Key data

CAS

21662-09-9

244-514-5

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

CIS-3-HEXENYL TIGLATEPERFUMING

CIS-3-HEXENYL VALERATEPERFUMING

CIS-3-HEXENYLOXYACETALDEHYDEPERFUMING

CIS-3-METHYL-5-PHENYL-2-PENTENENITRILEPERFUMING

CIS-4-HEPTENALPERFUMING

CIS-6-NON-6-ENALPERFUMING

CIS-6-NONENYL ACETATEPERFUMING

CIS-8-METHYL-1-OXASPIRODECANONEPERFUMING

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 CIS-4-DECENAL appears in the CosIng inventory

The CosIng inventory lists CIS-4-DECENAL 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.

CIS-4-DECENAL 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

CIS-4-DECENAL 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, CIS-4-DECENAL carries the following function designation(s):

PERFUMING

CAS 21662-09-9 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 CIS-4-DECENAL

This page reproduces the CosIng inventory entry for CIS-4-DECENAL 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 CIS-4-DECENAL 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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Tools & next steps

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