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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.

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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Same plant / compound family

38
HC YELLOW NO. 10
Hair dye (HC nitrophenylamine)
 42
HC YELLOW NO. 11
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 30
HC YELLOW NO. 12
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 55
HC YELLOW NO. 13
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HC YELLOW NO. 14
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HC YELLOW NO. 15
Hair Dye

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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.