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Disodium 2-amino-5-[(4-sulphonatophenyl)azo]benzenesulphonate

CAS 2706-28-7
53

Safety score · 0–100

Moderate

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

A water-soluble azo dye used as a direct colorant in rinse-off cosmetic products, carrying mild irritation concerns typical of sulphonated azo compounds.

This disodium salt of a sulphonated azo dye belongs to the acid dye class and is used primarily as a direct (non-oxidative) colorant in cosmetic formulations. The sulphonate groups enhance water solubility but also classify it with mild irritation warnings (H315/H319/H335). Azo dyes can, in rare cases, metabolise to aromatic amines; however this sulphonated derivative has a low skin-penetration profile due to its ionic character. It is regulated under EU cosmetics rules with no specific Annex III listing but general safety data applies.

Known concerns

  • Skin irritation H315
  • Eye irritation H319
  • Respiratory irritation H335
  • Rare azo-metabolite concern (theoretical)

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.