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Official EU label nameGlossary entry 7635

CROTONIC ACID

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
2

Resolved substance identity

CAS:3724-65-0
EC:223-077-4
Ingredient index records:
CROTONIC ACID
Cosmetic functions: FRAGRANCE, LIGHT STABILIZER

2-Butenoic acid

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1 matched or reported name
CROTONIC ACID

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name CROTONIC ACID.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 3724-65-0
CAS 3724-65-0PubChem CID 637090

Crotonic Acid

Crotonic acid appears as a white crystalline solid. Shipped as either a solid or liquid. Soluble in water and less dense than water. Corrosive to metals and tissue. — CAMEO Chemicals

IUPAC name
(E)-but-2-enoic acid
Molecular formula
C4H6O2
Molecular weight
86.09 g/mol
Exact mass
86.036779430 Da
XLogP3
0.7
Topological polar surface area
37.3 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

trans-2-Butenoic acid3-Methylacrylic acid(2E)-but-2-enoic acidbeta-Methylacrylic acidalpha-Butenoic acidalpha-Crotonic acidSolid crotonic acidbeta-Methacrylic acid
16 more reported names
Kyselina krotonovaAcrylic acid, 3-methyl-2E-butenoic acidYW5WZZ4O5QNSC-8751FEMA NO. 3908CHEBI:41131NSC-206946RefChem:919215223-077-4107-93-7trans-Crotonic acid(E)-2-Butenoic acid(E)-Crotonic acidBUTENOIC ACID2-butenoic acid, (2E)-
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

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

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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