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Solvent

METHYL PERFLUORO BUTYL/ISOBUTYL ETHER

CAS 163702-07-6,163702-08-7
35

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A short-chain perfluorinated ether solvent (CAS 163702-07-6/08-7). Once marketed as a "safer PFAS", it now falls under the broad EU PFAS-in-cosmetics restriction package — environmental persistence keeps it red despite low acute topical risk.

Function

SOLVENT

Skin benefits

  • Quick-evaporating carrier
  • Smooth glide on skin

Known concerns

  • PFAS-class environmental persistence
  • EU PFAS restriction package
  • Bioaccumulation potential
  • Atmospheric persistence

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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Same plant / compound family

22
METHYL PERFLUOROBUTYL ETHER
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 22
METHYL PERFLUOROISOBUTYL ETHER
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.