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BENZYL TRIETHYL AMMONIUM CHLORIDE

CAS 56-37-1
45

Safety score · 0–100

Moderate

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

About

A quaternary ammonium salt used as a phase-transfer catalyst and surfactant with multiple irritant hazard statements including skin and eye sensitization.

Benzyl Triethyl Ammonium Chloride (BTEAC, CAS 56-37-1) is a quaternary ammonium salt functioning as a phase-transfer catalyst, surfactant, and antimicrobial preservative in industrial and some cosmetic applications. It carries GHS hazard statements H302 (harmful if swallowed), H315 (skin irritation), H317 (skin sensitization), H319 (eye irritation), H335 (respiratory irritation), and H412 (harmful to aquatic life with long-lasting effects). The skin sensitization classification (H317) is particularly relevant for cosmetic use, as the EU Cosmetic Regulation would apply restrictions similar to other quaternary ammonium compounds with sensitization potential. This compound is not listed in EU cosmetic restriction annexes but would require careful safety evaluation.

Skin benefits

  • Has antimicrobial preservation properties
  • Functions as a surfactant and emulsifier

Known concerns

  • H317 - skin sensitization potential
  • H302 - harmful if swallowed
  • H412 - harmful to aquatic organisms with long-lasting effects
  • H315/H319/H335 - irritant to skin, eyes, and respiratory tract

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.