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Fragrance

NONAN-2-ONE

CAS 821-55-6 Updated
58

Safety score · 0–100

Moderate

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

About

Methyl heptyl ketone, a fruity-cheesy aroma chemical. Used at very low levels in perfume. Skin and eye irritant on direct exposure; safe only at fragrance-trace concentrations.

Function

PERFUMING

Skin benefits

  • Fruity fragrance character
  • Solvent for fragrance compounding
  • Volatile aroma top-note

Known concerns

  • Skin and eye irritant per GHS
  • Limited cosmetic-specific safety review
  • Use restricted to fragrance trace levels

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.