Official EU label nameGlossary entry 126

10-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:638-26-6

Ingredient index records:

10-HYDROXYSTEARIC ACID

Cosmetic functions: SKIN CONDITIONING, SKIN PROTECTING

Octadecanoic acid, 10-hydroxy-

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1 matched or reported name

10-HYDROXYSTEARIC ACID

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name 10-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 638-26-6

CAS 638-26-6PubChem CID 9561835

10-Hydroxystearic Acid

10-hydroxyoctadecanoic acid is a hydroxy fatty acid that is octadecanoic acid carrying a hydroxy group at position 10. It has a role as a bacterial xenobiotic metabolite. It is a long-chain fatty acid and a hydroxy fatty acid. It is functionally related to an octadecanoic acid. It is a conjugate acid of a 10-hydroxyoctadecanoate. — ChEBI

IUPAC name: 10-hydroxyoctadecanoic acid

Molecular formula: C18H36O3
Molecular weight: 300.5 g/mol
Exact mass: 300.26644501 Da
XLogP3: 6.5
Topological polar surface area: 57.5 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 0

Also known as

Octadecanoic acid, 10-hydroxy-10-hydroxy-octadecanoic acid384M5B7IFLNSC-79060CHEBI:143095RefChem:437036Rosilic acidC18H36O3

16 more reported names

UNII-384M5B7IFL10-hydroxy stearic acidAI3-26309(R)-10-hydroxystearicaciDL-10-hydroxy stearic acidUSDA 10-hydroxystearic acidxi-10-Hydroxyoctadecanoic acid10-HYDROXYOCTADECANOICACIDDL-10-HYDROXYSTEARIC ACID10-Hydroxystearic Acid, 10-HSANSC 79060STEARIC ACID, .IOTA.-HYDROXY-DL-10-hydroxy stearic acid; 10-HODAAS-5896910-HYDROXYSTEARIC ACID, (+/-)-CS-0186310

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External database identifiers

ChEBI:CHEBI:143095
EPA DTXSID:DTXSID901314578
PubMed:22261174
PubMed:22189865
PubMed:21943732
PubMed:21720824
PubMed:21450085
PubMed:21329502
PubMed:21207107
PubMed:19818319
PubMed:18296335
PubMed:17644293
PubMed:17485848
PubMed:15556558

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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