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2-HEPTYLIDENECYCLOPENTANONE

CAS 39189-74-7
52

Safety score · 0–100

Moderate

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

About

2-HEPTYLIDENECYCLOPENTANONE is a cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.

2-Heptylidenecyclopentanone is an alpha-beta unsaturated ketone fragrance ingredient with warm, musky, and slightly fruity characteristics. The H315 (skin irritation) and H317 (skin sensitisation) hazard classifications require it to be used only at low concentrations in cosmetic formulations. IFRA guidelines restrict its use in leave-on products to concentrations below the sensitisation threshold.

Skin benefits

  • Contributes warm, musky notes to fine fragrance compositions

Known concerns

  • Skin sensitisation hazard (H317)
  • Skin irritation potential (H315)
  • IFRA restrictions limit concentration in leave-on products

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.