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Fragrance

BUTYRIC ACID

CAS 107-92-6 Updated
60

Safety score · 0–100

Fine

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

About

A short-chain (C4) fatty acid with an infamously rancid smell. Used at trace levels in fragrance and as feedstock for ester emollients. Corrosive when concentrated, fine at compliant low levels.

Function

FRAGRANCE

Skin benefits

  • Source of butyrate ester emollients
  • Used for fatty fragrance accents
  • Naturally present in dairy fats

Known concerns

  • Strong rancid/vomitous odor at neat levels
  • Skin and eye corrosive at higher concentrations
  • Acute irritation classification

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.