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Fragrance

Benzyl cyanide, when used as a fragrance ingredient

CAS 140-29-4 Updated
30

Safety score · 0–100

Caution

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

About

An aromatic nitrile that converts to hydrogen cyanide on metabolism — acutely toxic and listed under EU restrictions. Modern IFRA standards prohibit its use as a fragrance ingredient; should not appear in compliant EU cosmetics.

Skin benefits

  • Provides a watercress-type aromatic note

Known concerns

  • Acutely toxic by all routes (oral, dermal, inhalation)
  • Metabolises to cyanide and hydrogen cyanide
  • EU Annex II restricted
  • IFRA-prohibited in modern fragrance materials

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.