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Fragrance

2-TRANS, 6-TRANS-NONADIENAL DIETHYL ACETAL

CAS 67674-37-7 Updated
58

Safety score · 0–100

Moderate

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

About

Diethyl acetal of trans,trans-nonadienal – a cucumber-violet fragrance note. Acetal masking helps stability but the parent aldehyde is a documented allergen.

Function

PERFUMING

Skin benefits

  • Cucumber/violet fragrance note
  • Acetal-protected delivery of nonadienal

Known concerns

  • Parent aldehyde is a known sensitiser
  • Conjugated diene reactivity
  • IFRA-restricted
  • Limited public cosmetic data

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.