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4-METHYL-2-PHENYL-2-PENTENAL

CAS 26643-91-4
45

Safety score · 0–100

Moderate

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

About

4-methyl-2-phenyl-2-pentenal is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

This compound carries hazard statements H315 (skin irritation), H319 (eye irritation), and H335 (respiratory irritation) in addition to recognized sensitization potential from the alpha,beta-unsaturated aldehyde moiety combined with an aromatic substituent. Unsaturated aldehydes with aromatic conjugation represent a high-risk class for contact allergy, and EU SCCS guidance recommends particularly low use levels to minimize consumer exposure and sensitization risk.

Known concerns

  • skin sensitizer
  • skin irritant (H315)
  • eye irritant (H319)
  • respiratory irritant (H335)

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.