Official EU label nameGlossary entry 20495

PERFLUOROOCTYLETHYL TRISILOXANE

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:163921-85-5

Ingredient index records:

PERFLUOROOCTYLETHYL TRISILOXANE

Cosmetic functions: BINDING

Trisiloxane, 2-(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)-1,1,1,3,5,5,5-heptamethyl-

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1 matched or reported name

PERFLUOROOCTYLETHYL TRISILOXANE

Regulatory evidence across markets

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

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 163921-85-5

CAS 163921-85-5PubChem CID 57370362

1,1,1,3,3,5-Hexafluoro-5-(heptadecafluorooctyl)-5-(pentafluoroethyl)trisiloxane

IUPAC name: difluoro-[fluoro-(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctyl)-(1,1,2,2,2-pentafluoroethyl)silyl]oxy-trifluorosilyloxysilane

Molecular formula: C10F28O2Si3
Molecular weight: 768.32 g/mol
Exact mass: 767.8758974 Da
Topological polar surface area: 18.5 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 30
Covalent units: 1
Defined stereocentres: 0

Also known as

RefChem:212853PERFLUOROOCTYLETHYL TRISILOXANE

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External database identifiers

EPA DTXSID:DTXSID70724665

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

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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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