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CAS 116265-66-8 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 3649215/10/2010

PERFLUOROPERHYDROBENZYL TETRALIN

2-[Difluoro(undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydronaphtalene

PERFLUOROPERHYDROBENZYL TETRALIN 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 116265-66-8

CAS 116265-66-8PubChem CID 14474513

Perfluoroperhydrobenzyl tetralin

IUPAC name: 2-[difluoro-(1,2,2,3,3,4,4,5,5,6,6-undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluoronaphthalene

Molecular formula: C17F30
Molecular weight: 774.13 g/mol
Exact mass: 773.9520949 Da
XLogP3: 9.2
Topological polar surface area: 0.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 30
Covalent units: 1
Defined stereocentres: 0

Also known as

Fiflow 260PP 25UNII-XB88J87KY4XB88J87KY4Perfluoroperhydrobenzyl tetralin [INCI]Naphthalene, 2-(difluoro(1,2,2,3,3,4,4,5,5,6,6-undecafluorocyclohexyl)methyl)-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydro-Naphthalene, 2-(difluoro(undecafluorocyclohexyl)methyl)-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydro-Naphthalene, 2-[difluoro(1,2,2,3,3,4,4,5,5,6,6-undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydro-

10 more reported names

RefChem:1716742-[difluoro-(1,2,2,3,3,4,4,5,5,6,6-undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluoro-decalinPerfluoroperhydro-2-benzyltetralinperfluoroperhydrobenzyltetralinDFGLLDMCDAKADU-UHFFFAOYSA-NC17F30perfluoro(benzyltetralin), AldrichCPR2-[Difluoro(undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydronaphthalene2-[Difluoro(1,2,2,3,3,4,4,5,5,6,6-Undecafluorocyclohexyl)Methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-Heptadecafluorodecahydro-Naphth alene2-[Difluoro(1,2,2,3,3,4,4,5,5,6,6-Undecafluorocyclohexyl)Methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-Heptadecafluorodecahydro-Naphthalene

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID40881335

Evidence from additional scientific databases

NIH PubChem PUG-View

Exact identifier match14474513

Attributed physical-property, hazard, environmental and use annotations.

Uses: non-polymer PFAS -> Electronic Industry -> Heat transfer fluids (cooling of electrical equipment); non-polymer PFAS -> Tracing and tagging -> Tracing and tagging applications Source: NORMAN Suspect List Exchange
Uses: • Tracing and tagging applications [Ref: http://www.f2chemicals.com/full_range.html]; • Fluid for direct contact cooling [Ref: http://www.f2chemicals.com/full_range.html] Source: NORMAN Suspect List Exchange

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status

Source	Result	Checked
NIH PubChem PUG-View	Exact match	2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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 PERFLUOROPERHYDROBENZYL TETRALIN

INCI name

PERFLUOROPERHYDROBENZYL TETRALIN

Description

2-[Difluoro(undecafluorocyclohexyl)methyl]-1,1,2,3,3,4,4,4a,5,5,6,6,7,7,8,8,8a-heptadecafluorodecahydronaphtalene

Record provenance

Inventory reference: 36492
Imported identity: PERFLUOROPERHYDROBENZYL TETRALIN
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for PERFLUOROPERHYDROBENZYL TETRALIN

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Key data

CAS

116265-66-8

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Restriction

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Function

SKIN CONDITIONING: Maintaining the skin in good condition.
SOLVENT: Dissolving other components of cosmetics. Solvents are usually liquids (aqueous and nonaqueous).

Official EU ingredient-name evidence

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

#20497 · PERFLUOROPERHYDROBENZYL TETRALIN

Ingredients with overlapping formulation functions

PERFLUORODECALINDETANGLING, SKIN CONDITIONING, SOLVENT

PERFLUORODIMETHYLCYCLOHEXANESOLVENT

PERFLUOROHEXANESOLVENT

PERFLUOROMETHYLCYCLOPENTANESKIN CONDITIONING, SOLVENT

PERFLUOROPERHYDROPHENANTHRENESKIN CONDITIONING, SOLVENT

PERFLUOROTETRALINDETANGLING, SKIN CONDITIONING, SOLVENT

PETROLEUM DISTILLATESANTIFOAMING, SOLVENT

PHENOXYISOPROPANOLPRESERVATIVE, SOLVENT

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 PERFLUOROPERHYDROBENZYL TETRALIN appears in the CosIng inventory

The CosIng inventory lists PERFLUOROPERHYDROBENZYL TETRALIN 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.

PERFLUOROPERHYDROBENZYL TETRALIN is also tagged with 2 cosmetic functions 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

PERFLUOROPERHYDROBENZYL TETRALIN 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, PERFLUOROPERHYDROBENZYL TETRALIN carries the following function designation(s):

CAS 116265-66-8 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 PERFLUOROPERHYDROBENZYL TETRALIN

This page reproduces the CosIng inventory entry for PERFLUOROPERHYDROBENZYL TETRALIN 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 PERFLUOROPERHYDROBENZYL TETRALIN 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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