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Colorant

Hydrogen 3,6-bis(diethylamino)-9-(2,4-disulphonatophenyl)xanthylium, sodium salt

CAS 3520-42-1
40

Safety score · 0–100

Moderate

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

Acid Red 52 — a xanthylium-based magenta/pink colorant used in rinse-off cosmetic and hair-dye products. EU restricts use under Annex III and class data flags possible skin sensitization.

Skin benefits

  • Vivid magenta/pink colorant
  • Stable in rinse-off

Known concerns

  • EU hair-dye restriction (Annex III)
  • Possible skin sensitization
  • Diethylamino xanthylium chemistry

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.