Ethyl Perfluoroisobutyl Ether

INCI: ETHYL PERFLUOROISOBUTYL ETHER

CAS Number
163702-06-5 (branched isomer of CAS 163702-05-4)
Function
Solvent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Currently permitted โ€” EPA PFAS scrutiny applies

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

PFAS compound with environmental persistence concerns and limited toxicological data; consider as sunset ingredient.

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Concern Level: High

Frequently Asked Questions

Is Ethyl Perfluoroisobutyl Ether safe in cosmetics?

PFAS compound with environmental persistence concerns and limited toxicological data; consider as sunset ingredient. The EU classifies Ethyl Perfluoroisobutyl Ether as "permitted". Safety rating: MODERATE.

Is Ethyl Perfluoroisobutyl Ether allowed in the EU?

Ethyl Perfluoroisobutyl Ether EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Ethyl Perfluoroisobutyl Ether do in cosmetics?

Ethyl Perfluoroisobutyl Ether functions as: Solvent. It is classified as a cosmetic ingredient in our database. CAS number: 163702-06-5 (branched isomer of CAS 163702-05-4).

What is the Margin of Safety for Ethyl Perfluoroisobutyl Ether?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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