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Chelating Agent

PENTASODIUM TRIPHOSPHATE

CAS 7758-29-4
78

Safety score · 0–100

Fine

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

A phosphate chelator and anti-tartar agent — most familiar in toothpaste for removing stains. Safe at cosmetic use levels; main caveat is environmental, as phosphates in wastewater contribute to algal bloom.

Skin benefits

  • Chelator for hard water ions
  • Anti-tartar agent in toothpaste
  • Stain remover
  • Stabilises surfactant systems

Known concerns

  • Mildly alkaline — irritating at high concentration
  • Environmental: phosphates contribute to eutrophication in waterways
  • Generally fine at typical cosmetic use levels

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

PC

PubChem

U.S. NIH compound data, GHS hazard codes and toxicity literature.

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SODIUM HEXAMETAPHOSPHATE
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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.