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BUTYL METHACRYLATE

CAS 97-88-1
30

Safety score · 0–100

Caution

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

About

Butyl Methacrylate is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Butyl methacrylate is a methacrylic acid ester monomer used in nail gel and acrylic nail formulations, where it polymerises to form a hard, durable coating. Under EU CosIng Annex III restrictions, butyl methacrylate is restricted for use in nail products with specific purity requirements regarding residual monomer content. The ingredient is a recognised skin sensitiser and irritant in its monomeric form; workers and consumers using nail products may develop methacrylate allergy with repeated exposure. The EU classification as a restricted nail product ingredient with documented sensitisation cases places it in the lower score range.

Known concerns

  • Skin sensitiser - documented cases of contact allergy
  • Skin and respiratory irritant as monomer
  • EU Annex III restricted in nail products
  • Residual monomer concern in polymerised products

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.