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1,4-Diaminoanthraquinone

CAS 128-95-0
28

Safety score · 0–100

Caution

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

About

1,4-diaminoanthraquinone is a cosmetic ingredient. Exercise caution due to limited available safety data.

1,4-Diaminoanthraquinone (CAS 128-95-0) is used as a direct dye and hair colorant providing violet to purple hues. EU Regulation 1223/2009 Annex III restricts its use to a maximum concentration of 0.5% in cosmetic products. The compound carries hazard statements H301 (toxic if swallowed), H317 (may cause allergic skin reaction), and H373 (may cause damage to organs through prolonged or repeated exposure), indicating concerns about both acute toxicity and systemic effects from repeated use. The anthraquinone structure raises concerns about potential carcinogenic metabolites.

Function

COLORANT

Skin benefits

  • Provides violet to purple coloration in hair dyes
  • Used in semi-permanent hair coloring formulations

Known concerns

  • Maximum 0.5% concentration limit in EU
  • Acute oral toxicity (H301)
  • Skin sensitizer (H317)
  • Organ toxicity from repeated exposure (H373)
  • Potential concern for carcinogenic metabolites

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.