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EU cosmetic ingredients, restrictions and safety
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Official EU label nameGlossary entry 16578

METHYL 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:2365-48-2
EC:219-121-7
Ingredient index records:
METHYL THIOGLYCOLATE
Cosmetic functions: HAIR WAVING OR STRAIGHTENING

Methyl mercaptoacetate

Inventory restriction note: III/2b

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1 matched or reported name
METHYL THIOGLYCOLATE

Regulatory evidence across markets

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

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Chemical identity and properties

PubChem 2D chemical structure for CAS 2365-48-2
CAS 2365-48-2PubChem CID 16907

Methyl Thioglycolate

Based on the available data, the CIR Expert Panel concluded that ... Methyl 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
methyl 2-sulfanylacetate
Molecular formula
C3H6O2S
Molecular weight
106.15 g/mol
Exact mass
106.00885060 Da
XLogP3
0.4
Topological polar surface area
27.3 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

Methyl mercaptoacetateMethyl 2-mercaptoacetateThioglycolic acid methyl esterMethylthioglycolateAcetic acid, mercapto-, methyl esterMethanethiol, methoxy-MethylmercaptoacetateUSAF EK-7119
16 more reported names
Acetic acid, 2-mercapto-, methyl esterO1608LA9ELNSC-75117RefChem:818100219-121-7Mercaptoacetic acid methyl esterMethyl sulfanylacetate2-mercaptoacetic acid methyl esterThioglykolsaeure-methylesterNSC 75117Methyl .alpha.-mercaptoacetatemercapto-acetic acid methyl esterHSDB 2705EINECS 219-121-7Thioglykolsaeure-methylester [German]BRN 0506259
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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