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ETHYL 2-METHYLPENT-4-ENOATE

CAS 53399-81-8
65

Safety score · 0–100

Fine

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

About

Ethyl 2-methylpent-4-enoate is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Ethyl 2-methylpent-4-enoate is an unsaturated ester with fruity, herbaceous odor characteristics used in cosmetic fragrances. It carries a H226 hazard warning (flammable liquid and vapor). Under EU cosmetic law, flammable ingredients used in spray or aerosol formulations require caution labeling. SCCS reviews suggest limited percutaneous absorption for most ethyl esters, but unsaturation (C=C bond) may increase reactivity and the need for additional safety data. No EU Annex restrictions currently apply.

Known concerns

  • Flammable liquid (H226) - caution in aerosol/spray products
  • Limited acute and chronic toxicity data
  • Double bond introduces potential for oxidation products

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.