Isobutyl 2-Naphthyl Ether

INCI: ISOBUTYL 2-NAPHTHYL ETHER

CAS Number
2173-57-1 [^1_11]
Function
Fragrance ingredient
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no CFR restriction; RIFM Expert Panel concluded safe

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Cramer Class III fragrance with adequate margin of safety; screening-level PEC/PNEC initially exceeded 1 but refined assessment showed compliance at current volume of use; negative for genotoxicity and phototoxicity.

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Concern Level: Low

Regulatory Flags

fragrance-component

Frequently Asked Questions

Is Isobutyl 2-Naphthyl Ether safe in cosmetics?

Cramer Class III fragrance with adequate margin of safety; screening-level PEC/PNEC initially exceeded 1 but refined assessment showed compliance at current volume of use; negative for genotoxicity and phototoxicity. The EU classifies Isobutyl 2-Naphthyl Ether as "prohibited". Safety rating: GOOD.

Is Isobutyl 2-Naphthyl Ether allowed in the EU?

Isobutyl 2-Naphthyl Ether EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Isobutyl 2-Naphthyl Ether do in cosmetics?

Isobutyl 2-Naphthyl Ether functions as: Fragrance ingredient. It is classified as a cosmetic ingredient in our database. CAS number: 2173-57-1 [^1_11].

What is the Margin of Safety for Isobutyl 2-Naphthyl Ether?

adequate 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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