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Chelating Agent

PHOSPHONOBUTANETRICARBOXYLIC ACID

CAS 37971-36-1 Updated
48

Safety score · 0–100

Moderate

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

About

A phosphonate-tricarboxylate chelator used at very low % to prevent hard-water scale and corrosion in formulations. Concentrates carry GHS skin/eye corrosion hazards; only safe when properly diluted and neutralized.

Function

ANTICORROSIVEBUFFERINGCHELATING

Skin benefits

  • Stops mineral scale in formulations
  • Improves product shelf stability
  • Boosts surfactant performance in hard water

Known concerns

  • Corrosive concentrate (H314, H318)
  • Industrial-grade origin
  • Limited cosmetic-specific toxicology

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.