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1,3-Propanesultone

CAS 1120-71-4
5

Safety score · 0–100

Avoid

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

1,3-propanesultone is a cosmetic ingredient. Exercise caution due to limited available safety data.

1,3-Propanesultone (1,3-propane sultone) is a cyclic sulfonate ester used as a chemical intermediate in polymerization and alkylation. It is classified by IARC as Group 2B (possibly carcinogenic to humans) and EU CLP as H301/H311 (acute toxicity), H350 (carcinogen), H318 (serious eye damage), H341 (mutagen), and H412 (aquatic toxicity). EU SVHC identification applies. The EU Cosmetics Regulation Annex II explicitly prohibits 1,3-propanesultone in cosmetic products.

Known concerns

  • Carcinogen H350
  • Mutagen H341
  • Acute toxicity H301/H311
  • Serious eye damage H318
  • Aquatic toxicity H412
  • SVHC substance
  • Banned in EU cosmetics (Annex II)

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.