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BUTYL PHENYLACETATE

CAS 122-43-0
55

Safety score · 0–100

Moderate

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

About

Butyl Phenylacetate is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

Butyl phenylacetate is a phenylacetic acid ester with a sweet, jasmine and honey-like floral fragrance profile, used extensively in perfumery. It is listed in EU CosIng Annex III as a restricted fragrance allergen under the IFRA Standards framework, requiring mandatory declaration on cosmetic product labels when present above threshold concentrations (0.001% in leave-on, 0.01% in rinse-off). The IFRA classification as a fragrance allergen reflects documented cases of contact sensitisation at higher use levels. At normal cosmetic concentrations it is considered safe, but it is a known contact allergen relative to non-allergen fragrance materials.

Skin benefits

  • Fragrance material with jasmine-honey floral character

Known concerns

  • IFRA-classified fragrance allergen - requires mandatory declaration
  • Contact sensitisation potential at high concentrations

References

EU

EU CosIng database

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

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.