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Hair Dye

4-AMINO-2-NITRODIPHENYLAMINE-2'-CARBOXYLIC ACID

CAS 117907-43-4
35

Safety score · 0–100

Caution

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

An oxidative hair-dye intermediate (nitro-aminodiphenylamine class) with documented sensitisation potential. EU-restricted to professional hair colourants; not for skin or eye products.

Function

HAIR DYEING

Skin benefits

  • Oxidative hair colour intermediate

Known concerns

  • Skin sensitizer (CLP H317)
  • Possible cross-reactivity with PPD-allergic users
  • EU restricted under Annex III for hair-colour use only
  • Avoid eye contact and skin staining

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.