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ZINC THIOSALICYLATE

CAS 16742-82-8
44

Safety score · 0–100

Moderate

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

About

A zinc-thiosalicylate complex restricted under EU Annex III/24 for use in cosmetic products, with concerns related to thiosalicylate chemistry and metal coordination complexity.

Zinc thiosalicylate is the zinc salt of thiosalicylic acid (ortho-mercaptobenzoic acid). The compound is listed in EU Cosmetics Regulation Annex III/24, which imposes specific restrictions on this thiosalicylate. The thiosalicylate moiety contains a thiol group that can participate in nitrosation reactions and metal coordination chemistry. Zinc supplementation adds complexity to the safety profile. Concentration limits and specific use conditions apply under EU regulation.

Skin benefits

  • Limited zinc supplementation in formulations
  • Antioxidant potential from thiosalicylate moiety

Known concerns

  • EU Annex III/24 restriction applies
  • Thiol group may participate in nitrosamine formation
  • Complex zinc coordination chemistry
  • Standard metal-salt precautions apply

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.