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Oxiranemethanol, 4-methylbenzene-sulfonate, (S)-

CAS 70987-78-9
28

Safety score · 0–100

Caution

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

A highly hazardous epoxide derivative bearing 'Danger' classification for serious health effects including suspected carcinogenicity (H350) and mutagenicity (H341), making it unsuitable for cosmetic use.

This compound (also called (S)-p-toluenesulfonate glycidyl ester or tosylate-protected glycidol) is a protected epoxide intermediate used in organic synthesis and industrial polymerisation. The hazard profile is severe: it carries H317 (skin sensitisation), H318 (serious eye damage), H341 (suspected mutagen), H350 (suspected carcinogen), and H411 (aquatic toxicity). It bears a CLP 'Danger' signal word. Given the confirmed serious health hazards — particularly H350 and H341 — this substance would not meet the safety requirements of EU Regulation 1223/2009 and would likely fall under restriction or prohibition.

Known concerns

  • Suspected carcinogen (H350) — Category 1B under CLP
  • Suspected mutagen (H341)
  • Skin sensitisation (H317) and serious eye damage (H318)
  • Hazardous to aquatic environment (H411)
  • CLP Danger classification — severe hazard profile
  • Unsuitable for cosmetic use under EU safety requirements

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.