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ACETALDEHYDE ETHYL ISOEUGENYL ACETAL

CAS 84029-92-5
50

Safety score · 0–100

Moderate

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

About

An acetal formed from acetaldehyde and isoeugenol, combining two known fragrance allergen precursors in one ingredient.

This acetal releases isoeugenol upon skin contact or metabolism. Isoeugenol is classified as a skin sensitizer (H317) and is listed on EU Annex III with mandatory labeling requirements and concentration limits in cosmetic products. Acetaldehyde is itself a respiratory sensitizer. The combined allergenic risk from both the parent molecule and the released isoeugenol makes this a compound of significant regulatory concern in the EU cosmetics framework.

Known concerns

  • Releases isoeugenol, a known skin sensitizer (H317)
  • Isoeugenol is EU Annex III restricted with mandatory labeling
  • Parent acetaldehyde is a recognized fragrance allergen
  • Dual allergen risk — high sensitization potential

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.