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TOLUENE SULFONIC ACID

CAS 104-15-4 Updated
55

Safety score · 0–100

Moderate

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

About

A strong organic acid (CAS 104-15-4) used as a hydrotrope to boost solubility of other ingredients. Effective but corrosive in raw form — finished products neutralise it to safe levels.

Function

SURFACTANT - HYDROTROPESURFACTANT - CLEANSING

Skin benefits

  • Boosts solubility of difficult ingredients
  • Stabilises clear gels and shampoos

Known concerns

  • Concentrated form is corrosive (GHS H314)
  • Skin and eye irritation
  • Must be properly neutralised in formula

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.