N-BUTYL ALCOHOL

Denaturant

60

Moderate

CAS Number: 71-36-3

About N-BUTYL ALCOHOL

A solvent used in nail polishes and fragrances — evaporates during application. The raw chemical is irritating, but finished products contain minimal residual amounts.

Detailed Analysis

N-Butyl Alcohol (1-butanol, CAS 71-36-3) is a primary alcohol used as a solvent and denaturant. GHS classifications include H226 (flammable), H302 (harmful if swallowed), H315/H318 (skin/serious eye damage), H335/H336 (respiratory irritant/narcotic). In finished cosmetics, it is largely evaporated during application. CIR reviewed and found safe as used in cosmetics. Primary exposure concern is occupational/manufacturing rather than consumer use.

What It Does

DENATURANT SOLVENT PERFUMING

Known Concerns

  • ⚠ Flammable
  • ⚠ Irritant to skin, eyes, and respiratory tract
  • ⚠ Harmful if swallowed
  • ⚠ Narcotic at high vapor concentrations

Safety Score

60

Moderate

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

🏛

EU CosIng Database

European Commission cosmetic ingredient registry

⚛

PubChem

National Library of Medicine compound data

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.