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HC YELLOW NO. 9

CAS 86419-69-4
50

Safety score · 0–100

Moderate

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

About

A semi-permanent hair dye with EU Annex III restrictions — toxic if swallowed and requires careful formulation.

HC Yellow No. 9 is a nitroaniline-type hair colorant restricted under EU Annex III/259. GHS data shows H301 (toxic if swallowed) and H302 (harmful if swallowed), with a 'Danger' signal word. Semi-permanent hair dyes in the HC series penetrate the hair shaft without requiring oxidation. The oral toxicity and Annex III restriction indicate this is a potent chemical requiring strict concentration limits.

Function

HAIR DYEING

Known concerns

  • EU Annex III restricted (III/259)
  • Toxic if swallowed (H301)
  • Harmful if swallowed (H302)
  • Nitroaniline derivative

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.