Chelating Agent
TRIPOTASSIUM EDTA
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
The tripotassium salt of EDTA — a chelator that keeps formulas stable and preservation effective. Main caveat is environmental persistence.
Tripotassium EDTA (CAS 17572-97-3) is the tripotassium salt of ethylenediaminetetraacetic acid, supplying a slightly more alkaline chelator than dipotassium EDTA. Functions similarly: binding trace metals that accelerate oxidation and impair preservation. Used at 0.05-0.2% in cosmetics. CIR has reviewed EDTA and its salts as safe for cosmetic use at typical levels. As with all EDTA salts, environmental biodegradability is the primary sustainability concern — EDTA persists in wastewater and mobilizes metals in aquatic systems. EU currently permits the material but monitors it. No GHS hazards at cosmetic concentrations.
Function
Skin benefits
- Effective chelator for formulation and preservation support
- Binds trace metals to prevent oxidation
- Minor pH-buffering action
Known concerns
- EDTA environmental persistence and biodegradability concerns
- Minor skin-penetration-enhancer effect
- EU watchlisted but currently permitted
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related chelating agents
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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.