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CAS 505-73-7 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.

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InventoryRef 7610615/10/2010

DITHIODIGLYCOLIC ACID

2,2'-Dithiodi(acetic) acid

DITHIODIGLYCOLIC ACID 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 505-73-7

CAS 505-73-7PubChem CID 68164

Dithiodiglycolic acid

IUPAC name: 2-(carboxymethyldisulfanyl)acetic acid

Molecular formula: C4H6O4S2
Molecular weight: 182.2 g/mol
Exact mass: 181.97075102 Da
XLogP3: 0.1
Topological polar surface area: 125.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 6
Covalent units: 1
Defined stereocentres: 0

Also known as

Acetic acid, 2,2'-dithiobis-Dithiodiacetic acidDithioglycolic acid2,2'-Dithiodiacetic acidThioglycolate disulfideAcetic acid, dithiodi-NSC-540887ZZ0LAL4TI

16 more reported names

Bis(carboxymethyl) disulfideNSC 540882,2'-Dithiobisacetic acidmercaptoacetic acid disulfide2,2'-Dithiodi(acetic) acidBIS(MERCAPTOACETIC ACID)2,2'-DITHIODIETHANOIC ACIDEINECS 208-019-8Acetic acid, dithiodi2,2'Dithiodiacetic acidRefChem:5898432,2'Dithiobisacetic acid2,2'Dithiodi(acetic) acidAcetic acid, 2,2'dithiobisAcetic acid, dithiodi (8CI)Acetic acid, dithiodi-(8CI)

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External database identifiers

ChEMBL:CHEMBL1611974
EPA DTXSID:DTXSID6060131
PubMed:21433198
PubMed:15469274

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 DITHIODIGLYCOLIC ACID

INCI name

DITHIODIGLYCOLIC ACID

Description

2,2'-Dithiodi(acetic) acid

Record provenance

Inventory reference: 76106
Imported identity: DITHIODIGLYCOLIC ACID
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for DITHIODIGLYCOLIC ACID

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Key data

CAS

505-73-7

208-019-8

Restriction

—

Function

REDUCING: Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#9534 · DITHIODIGLYCOLIC ACID

Ingredients with overlapping formulation functions

DIHYDROXYBENZYLIDENE SUCCINIMIDEANTIOXIDANT, BLEACHING, REDUCING, SKIN PROTECTING

DISODIUM HYDROXYSULFINOACETATEREDUCING

DISODIUM HYDROXYSULFOACETATEREDUCING

DISODIUM TETRAMETHYLHEXADECENYL SUCCINOYL CYSTEINEREDUCING, SKIN CONDITIONING, SKIN PROTECTING

DITHIOTHREITOLHAIR WAVING OR STRAIGHTENING, REDUCING

ETHANOLAMINE DITHIODIGLYCOLATEREDUCING

ETHANOLAMINE THIOGLYCOLATEDEPILATORY, HAIR WAVING OR STRAIGHTENING, REDUCING

ETHYL THIOGLYCOLATEDEPILATORY, HAIR WAVING OR STRAIGHTENING, REDUCING

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 DITHIODIGLYCOLIC ACID appears in the CosIng inventory

The CosIng inventory lists DITHIODIGLYCOLIC ACID 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.

DITHIODIGLYCOLIC ACID 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

DITHIODIGLYCOLIC ACID 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, DITHIODIGLYCOLIC ACID carries the following function designation(s):

REDUCING

CAS 505-73-7 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 DITHIODIGLYCOLIC ACID

This page reproduces the CosIng inventory entry for DITHIODIGLYCOLIC ACID 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 DITHIODIGLYCOLIC ACID 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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