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Fragrance

NONA-2,4-DIENAL

CAS 6750-03-4 Updated
58

Safety score · 0–100

Moderate

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

About

A nine-carbon dienal with a fatty/cucumber aroma. Reactive alpha,beta-unsaturated aldehydes carry sensitization risk; used only at very low fragrance levels.

Function

PERFUMING

Skin benefits

  • Cucumber/fatty fragrance note

Known concerns

  • Alpha,beta-unsaturated aldehyde sensitizer class
  • Mild irritant

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.