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Official EU label nameGlossary entry 16561

METHYL PERFLUORO BUTYL/ISOBUTYL ETHER

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.

0 markets with evidence
Markets checked
13
Markets with evidence
0
Evidence gaps
13
Resolved identifiers
2

Resolved substance identity

CAS:163702-07-6163702-08-7
Ingredient index records:
METHYL PERFLUORO BUTYL/ISOBUTYL ETHER
Cosmetic functions: SOLVENT

Butane, 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-,Propane, 2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoro-

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1 matched or reported name
METHYL PERFLUORO BUTYL/ISOBUTYL ETHER

Official name structure and source evidence

This section separates facts supplied by external records from structure derived only from the exact official label wording.

Structured interpretation of the official EU INCI label

Matchedlabel-analysis-v1 · EU 2025/1175

The official label is a composite INCI name with 2 named source-material segments. Each segment must be reconciled with the supplier specification.

Identity type inferred from wording
composite
Review 2 parsed source-name segments
  1. METHYL PERFLUORO BUTYL
  2. ISOBUTYL ETHER

This structure is derived only from the official label wording. It does not establish composition, concentration, chemical equivalence, safety or regulatory permission.

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Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name METHYL PERFLUORO BUTYL/ISOBUTYL ETHER.

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 163702-07-6
CAS 163702-07-6PubChem CID 164514

Methyl perfluorobutyl ether

IUPAC name
1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane
Molecular formula
C5H3F9O
Molecular weight
250.06 g/mol
Exact mass
250.00401817 Da
XLogP3
3.3
Topological polar surface area
9.2 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
10
Covalent units
1
Defined stereocentres
0

Also known as

Methyl Nonafluorobutyl EtherButane, 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-Nonafluorobutyl methyl ether(perfluorobutoxy)methaneH637A50B7U1-methoxynonafluorobutaneMETHYL 1,1,2,2,3,3,4,4,4-NONAFLUOROBUTYL ETHERRefChem:818025
16 more reported names
METHYL PERFLUOROBUTYL ETHER [INCI]Butane, 1,1,1,2,2,3,3,4,4nonafluoro4methoxyFractionated and Column Treated HFE7100 from Methylbutyrate ECF. F12429 (Intermediate)605-339-3829-015-8METHOXYPERFLUOROBUTANEPerfluorobutyl Methyl EtherUNII-H637A50B7U1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-butaneCF3CF2CF2CF2OCH3C4F9OCH3FD2030Novec(R) HFE-7100 Engineered FluidHFE-449s1 (7100)Novec(R) HFE-7100DL Engineered FluidAS-48915
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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.

PubChem 2D chemical structure for CAS 163702-08-7
CAS 163702-08-7PubChem CID 4156734

Methyl perfluoroisobutyl ether

IUPAC name
2-[difluoro(methoxy)methyl]-1,1,1,2,3,3,3-heptafluoropropane
Molecular formula
C5H3F9O
Molecular weight
250.06 g/mol
Exact mass
250.00401817 Da
XLogP3
3.3
Topological polar surface area
9.2 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
10
Covalent units
1
Defined stereocentres
0

Also known as

perfluoroisobutyl methyl etherPropane, 2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoro-HI89P35AAXmethyl nonafluoroisobutyl etherUNII-HI89P35AAX1,1,2,3,3,3-HEXAFLUORO-1-METHOXY-2-(TRIFLUOROMETHYL)PROPANE2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoropropanemethylperfluorobutylether
12 more reported names
RefChem:157993METHYL PERFLUOROISOBUTYL ETHER [INCI]VF45 (TM) HFEBased Cleaning Fluid, VOL0570APropane, 2(difluoromethoxymethyl)1,1,1,2,3,3,3heptafluoro422-270-2605-340-91,1,1,2,3,3-hexafluoro-3-methoxy-2-(trifluoromethyl)propane2-[Difluoro(methoxy)methyl]-1,1,1,2,3,3,3-heptafluoro-propane2-(difluoro(methoxy)methyl)-1,1,1,2,3,3,3-heptafluoropropane(CF3)2CFCF2OCH3methyl perfluoroisobutanyl etherDB-352148
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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.

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 assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortalUS 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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