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Surfactant

SODIUM NAPHTHOL SULFONATE

CAS 6099-57-6 Updated
50

Safety score · 0–100

Moderate

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

About

A naphthol-based sulfonate used as a hydrotrope or dispersing aid. The naphthol group is known to be sensitizing, and cosmetic safety data is sparse, so we keep this in the orange "use with awareness" tier.

Function

ABSORBENT

Skin benefits

  • Dispersing aid in aqueous systems
  • Solubilizes hard-to-mix actives

Known concerns

  • Naphthol-class sensitization potential
  • Aromatic amine residue possibility
  • Sparse cosmetic toxicology data

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.