Official EU label nameGlossary entry 15821

MAGNESIUM 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

Markets with evidence

Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:63592-16-5

EC:264-358-1

Ingredient index records:

MAGNESIUM THIOGLYCOLATE

Cosmetic functions: DEPILATORY, HAIR WAVING OR STRAIGHTENING, REDUCING

Bis(mercaptoacetato-O,S)magnesium

Inventory restriction note: III/2a

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1 matched or reported name

MAGNESIUM THIOGLYCOLATE

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name MAGNESIUM 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 63592-16-5

CAS 63592-16-5PubChem CID 22027387

Magnesium Thioglycolate

Based on the available data, the CIR Expert Panel concluded that ... Magnesium 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: magnesium bis(2-sulfanylacetate)

Molecular formula: C4H6MgO4S2
Molecular weight: 206.5 g/mol
Exact mass: 205.9557927 Da
Topological polar surface area: 82.3 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 6
Covalent units: 3
Defined stereocentres: 0

Also known as

UNII-8E96N0WA3XEINECS 264-358-18E96N0WA3XMAGNESIUM, BIS(MERCAPTOACETATO-O,S)-, (T-4)-MAGNESIUM, BIS((MERCAPTO-.KAPPA.S)ACETATO-.KAPPA.O)-, (T-4)-MAGNESIUM, BIS(2-(MERCAPTO-.KAPPA.S)ACETATO-.KAPPA.O)-, (T-4)-RefChem:155278MAGNESIUM THIOGLYCOLATE [INCI]

6 more reported names

MAGNESIUM, BIS((MERCAPTO-KAPPAS)ACETATO-KAPPAO)-, (T-4)-MAGNESIUM, BIS(2-(MERCAPTO-KAPPAS)ACETATO-KAPPAO)-, (T-4)-264-358-1Bis(mercaptoacetato-O,S)magnesiumMagnesium 2-mercaptoacetateMagnesium bis(sulfanylacetate)

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External database identifiers

EPA DTXSID:DTXSID80212967

Retrieved from NIH PubChem on 2026-09-02 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 assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US 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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