Official EU label nameGlossary entry 223

2-HYDROXYSTEARIC 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.

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Resolved identifiers

Resolved substance identity

CAS:629-22-1

EC:688-468-8

Ingredient index records:

2-HYDROXYSTEARIC ACID

Cosmetic functions: HAIR CONDITIONING; SKIN PROTECTING; SURFACTANT - CLEANSING; SKIN CONDITIONING - MISCELLANEOUS

2-Hydroxystearic Acid is the organic compound that conforms to the formula

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1 matched or reported name

2-HYDROXYSTEARIC ACID

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name 2-HYDROXYSTEARIC 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 629-22-1

CAS 629-22-1PubChem CID 69417

2-Hydroxystearic acid

2-hydroxyoctadecanoic acid is a long-chain fatty acid that is stearic (octadecanoic) acid substituted at position 2 by a hydroxy group. It has a role as a human metabolite. It is a 2-hydroxy fatty acid and a hydroxyoctadecanoic acid. It is a conjugate acid of a 2-hydroxyoctadecanoate. — ChEBI

IUPAC name: 2-hydroxyoctadecanoic acid

Molecular formula: C18H36O3
Molecular weight: 300.5 g/mol
Exact mass: 300.26644501 Da
XLogP3: 7.5
Topological polar surface area: 57.5 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

alpha-Hydroxystearic acidOctadecanoic acid, 2-hydroxy-99EP4WX42OCHEBI:19660NSC-907alpha-hydroxyoctadecanoic acidRefChem:909952688-468-8

16 more reported names

1330-70-7dl-2-hydroxystearic acidOctadecanoic acid, hydroxy-2-hydroxy-octadecanoic acidDL-alpha-Hydroxystearic acid.alpha.-Hydroxystearic acidUNII-99EP4WX42OD-2-Hydroxyoctadecanoic acidDL-2-hydroxy stearic acidDS-26812-HydroxystearateDL- alpha -Hydroxystearic acidDL-A-HYDROXYSTEARIC ACIDalpha-HFT-06335212-HODA

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External database identifiers

ChEBI:CHEBI:19660
ChEMBL:CHEMBL4562220
EPA DTXSID:DTXSID70415248
PubMed:22339649
PubMed:22164155
PubMed:21417341
PubMed:18559081
PubMed:15644336
PubMed:15055237
PubMed:12626405

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 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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