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BUTYRALDEHYDE

CAS 123-72-8
8

Safety score · 0–100

Avoid

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

About

Butyraldehyde — a small, volatile, flammable aldehyde used as an industrial intermediate. Not an appropriate cosmetic ingredient.

Butyraldehyde (butanal, CAS 123-72-8) is a small, volatile four-carbon aldehyde used primarily as an industrial chemical intermediate for 2-ethylhexanol and other plasticizer precursors. GHS classifications include flammable liquid (H225), acute inhalation toxicity (H332), and serious eye irritation. As a reactive aldehyde it is not appropriate for cosmetic use; IFRA-restricted aldehydes in fragrance are purified, stabilized isomers with established safety data, not bulk butyraldehyde. If this ingredient appears on an INCI decl, it is almost certainly either an error or an unpurified residual and should be red-flagged.

Function

PERFUMING

Skin benefits

  • None

Known concerns

  • Flammable liquid (GHS H225)
  • Acute inhalation toxicity
  • Respiratory and eye irritant
  • Not an appropriate cosmetic ingredient

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.