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Chelating Agent

PENTASODIUM AMINOTRIMETHYLENE PHOSPHONATE

CAS 2235-43-0 Updated
72

Safety score · 0–100

Fine

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

About

The pentasodium salt of aminotrimethylene phosphonic acid (ATMP) — a chelator that binds metal ions to keep cosmetics stable. Used at low percentages with a long industrial track record.

Skin benefits

  • Binds metal ions to prevent rancidity
  • Stabilises actives like vitamin C
  • Boosts preservative efficacy
  • Improves product shelf life

Known concerns

  • Environmental persistence
  • High-pH undiluted form can irritate
  • Limited public CIR review of the Na5 salt

References

EU

EU CosIng database

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

Related chelating agents

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HEXACARBOXYMETHYL LYSINYL LYSINAMIDE
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LAUROYL ETHYLENEDIAMINE TRIACETIC ACID
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POTASSIUM POLYPHOSPHATE
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SODIUM DIHYDROXYETHYLGLYCINATE
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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.