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Cobalt

CAS 7440-48-4
15

Safety score · 0–100

Avoid

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

About

Cobalt is a cosmetic ingredient. Exercise caution due to limited available safety data.

Cobalt (Co, CAS 7440-48-4) is a transition metal classified as CMR Category 1B substance under EU CLP regulation. It carries extensive hazard statements including H317 (skin sensitizer), H334 (respiratory sensitizer), H341 (mutagen), H350 (carcinogen), H360F (reproductive toxicity), H413 (persistent environmental hazard), and many others covering acute toxicity, carcinogenicity, and organ effects. Cobalt and cobalt compounds are restricted in cosmetic products under EU Regulation 1223/2009 and REACH due to their toxicity profile.

Known concerns

  • Confirmed skin sensitizer (H317)
  • Respiratory sensitizer (H334)
  • Confirmed carcinogen (H350)
  • Reproductive toxicant (H360F)
  • CMR Category 1B substance
  • PBT/vPvB environmental hazard (H413)

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.