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SOLVENT RED 24

CAS 85-83-6
35

Safety score · 0–100

Caution

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

About

A synthetic azo dye (Sudan III) restricted in the EU under Annex II/379, with significant health and safety concerns.

Solvent Red 24 (CAS 85-83-6), also known as Sudan III, is a synthetic azo dye with the formula C22H16N4O. It is listed in EU Cosmetics Regulation 1223/2009 Annex II under reference II/379, indicating prohibition or severe restriction in cosmetic products. Sudan dyes, including Solvent Red 24, have been restricted in food applications due to potential carcinogenicity concerns. The EU has determined this dye presents unacceptable safety risks for cosmetic use. While it produces vivid red coloration, the metabolic breakdown products (aromatic amines) are of significant regulatory concern. Not approved as a cosmetic colorant in the EU.

Known concerns

  • EU Annex II restricted (II/379)
  • Known azo dye with potential carcinogenic aromatic amine metabolites
  • Prohibited in EU cosmetic products
  • Skin sensitization potential

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.