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Official EU label nameGlossary entry 10127

ETHYL THIOGLYCOLATE

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:623-51-8
EC:210-800-3
Ingredient index records:
ETHYL THIOGLYCOLATE
Cosmetic functions: DEPILATORY, HAIR WAVING OR STRAIGHTENING, REDUCING

Ethyl mercaptoacetate

Inventory restriction note: III/2b

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1 matched or reported name
ETHYL THIOGLYCOLATE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name ETHYL THIOGLYCOLATE.

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.

Check the markets and their sourcesSearch every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 623-51-8
CAS 623-51-8PubChem CID 12185

Ethyl Thioglycolate

Based on the available data, the CIR Expert Panel concluded that ... Ethyl Thioglycolate is safe for use in hair straighteners, permanent waves, tonics, dressings, and so forth, wave sets, other non-coloring hair products, and hair dyes and colors, as described in this safety assessment, at concentrations up to 15.2% (as Thioglycolic Acid). Hairdressers should avoid skin contact and minimize consumer skin exposure. — Cosmetic Ingredient Review (CIR)

IUPAC name
ethyl 2-sulfanylacetate
Molecular formula
C4H8O2S
Molecular weight
120.17 g/mol
Exact mass
120.02450067 Da
XLogP3
0.8
Topological polar surface area
27.3 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

Ethyl 2-mercaptoacetateEthyl mercaptoacetateUSAF EK-2070Thioglykolsaeure-aethylesterNSC 8834Ethyl .alpha.-mercaptoacetateAcetic acid, 2-mercapto-, ethyl ester2-mercaptoacetic acid ethyl ester
16 more reported names
UNII-Z5SD8DD6CPZ5SD8DD6CPEINECS 210-800-3Thioglykolsaeure-aethylester [German]BRN 0605581AI3-23030NSC-8834Ethyl alpha-mercaptoacetateETHOXYCARBONYLMETHANETHIOL4-03-00-00616 (Beilstein Handbook Reference)ACETIC ACID,MERCAPTO,ETHYL ESTERRefChem:139061ThioglykolsaeureaethylesterETHYL THIOGLYCOLATE [INCI]Acetic acid, mercapto, ethyl esterAcetic acid, 2mercapto, ethyl ester
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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