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OCTOXYNOL-11

CAS 9002-93-1
58

Safety score · 0–100

Moderate

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

Octoxynol-11 is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Octoxynol-11 contains an average of 11 ethylene oxide units, placing it in the mid-to-higher range of the series. The primary safety consideration is the 4-tert-octylphenyl hydrophobic group—the source of endocrine-disruptor metabolites. Skin sensitization is not a major concern for octoxynols, but surfactant-induced irritation can occur at higher concentrations. The EU has no specific concentration limit for octoxynol-11, but the broader regulatory trend is toward restriction of alkylphenol ethoxylates in favor of gentler alternatives.

Known concerns

  • Endocrine-disrupting metabolite: 4-tert-octylphenol from environmental degradation
  • Surfactant irritation potential at high concentrations
  • Environmental PBT concern driving regulatory pressure in EU

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, so always read the physical product label and consult a healthcare professional for personal concerns.