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Azo pigment (non-cosmetic)

2-[(4-Methoxy-2-nitrophenyl)azo]-3-oxo-N-(o-tolyl)butyramide

CAS 6371-96-6
20

Safety score · 0–100

Caution

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

A nitro-substituted yellow azo pigment used in industrial coloration but not approved for cosmetics in the EU. The nitroaromatic azo class is associated with potential aromatic amine release, so use on skin is not supported.

Skin benefits

  • Strong yellow azo pigment used in inks and plastics
  • Provides bright colorfast yellow hue in non-cosmetic uses

Known concerns

  • Azo dye with nitroaromatic substitution; potential to release aromatic amines
  • Not listed on EU Annex IV permitted cosmetic colorants
  • Nitro-azo class often genotoxicity-flagged
  • No SCCS safety opinion supporting cosmetic use

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.