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InventoryRef 5908615/10/2010

PERFLUOROOCTYLETHYL TRISILOXANE

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-

PERFLUOROOCTYLETHYL TRISILOXANE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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.

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 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
30
Covalent units
1
Defined stereocentres
0

Also known as

RefChem:212853PERFLUOROOCTYLETHYL TRISILOXANE
External database identifiers

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 PERFLUOROOCTYLETHYL TRISILOXANE

INCI name

PERFLUOROOCTYLETHYL TRISILOXANE

Description

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-

Record provenance

Inventory reference
59086
Imported identity
PERFLUOROOCTYLETHYL TRISILOXANE
Source update
15/10/2010
European Commission CosIng source notes

Key data

EC
Restriction
Function
BINDING
Providing adhesive properties during and after compression in cosmetic tablets and/or cakes.

Official EU ingredient-name evidence

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

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How PERFLUOROOCTYLETHYL TRISILOXANE appears in the CosIng inventory

The CosIng inventory lists PERFLUOROOCTYLETHYL TRISILOXANE 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.

PERFLUOROOCTYLETHYL TRISILOXANE 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

PERFLUOROOCTYLETHYL TRISILOXANE 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, PERFLUOROOCTYLETHYL TRISILOXANE carries the following function designation(s):

CAS 163921-85-5 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.

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Source note for PERFLUOROOCTYLETHYL TRISILOXANE

This page reproduces the CosIng inventory entry for PERFLUOROOCTYLETHYL TRISILOXANE 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 PERFLUOROOCTYLETHYL TRISILOXANE 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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