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Fragrance aldehyde

3,7-DIMETHYL-3,6-OCTADIENAL

CAS 55722-59-3
50

Safety score · 0–100

Moderate

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

A dimethyl octadienal closely related to citral, used for fresh citrus fragrance notes. Unsaturated citral-type aldehydes are recognized fragrance allergens with documented sensitization potential.

Function

PERFUMING

Skin benefits

  • Citral/citronellal-related unsaturated aldehyde used in fragrance
  • Provides fresh citrus aroma
  • Volatile fragrance component

Known concerns

  • Unsaturated aldehyde structure linked to skin sensitization
  • Closely related to citral, an EU-listed fragrance allergen requiring labeling
  • IFRA restrictions apply to similar aldehydes
  • Oxidation products may worsen sensitization

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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CIS-4-DECENAL
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ISOPROPYL-METHYL-BICYCLOOCTENE-2-CARBALDEHYDE
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LAURALDEHYDE
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3-ETHYL-3,7-DIMETHYLOCT-6-ENAL
Fragrance aldehyde

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.