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PENTASODIUM ETHYLENEDIAMINE TETRAMETHYLENE PHOSPHONATE.

Valuable CAS 7651-99-2 / CHELATING, VISCOSITY CONTROLLING

Pentasodium Ethylenediamine Tetramethylene Phosphonate is a key ingredient primarily serving as a chelating agent to enhance product stability and appearance by effectively binding to metal ions. It also acts as a viscosity controlling agent, contributing to optimal product texture and consistency.

Summary

Chelating Viscosity controlling

Science

Mechanism of Action

Operating in aqueous solutions, Pentasodium Ethylenediamine Tetramethylene Phosphonate dissociates into ions that avidly chelate, or bind to, free metal ions. This action prevents these metallic impurities from negatively impacting the cosmetic product's stability, color, and overall appearance. Additionally, it helps to regulate the viscosity of formulations, ensuring desirable rheological properties.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 6 – 8
0 7 14

Stability

Pentasodium Ethylenediamine Tetramethylene Phosphonate demonstrates excellent chemical stability and thermal resilience, maintaining its integrity at temperatures up to 200°C. The solid form is noted to be slightly deliquescent, absorbing atmospheric moisture. An optimal pH range of 6.0 to 8.0 is reported for a 1% aqueous solution.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

This ingredient is recognized as innocuous, non-toxic, and environmentally non-polluting, with INCI Beauty reporting 'No penalty' across all safety metrics. While the acid form presents GHS classifications for skin and eye irritation, the pentasodium salt is a specifically neutral variant. Toxicity data from PubChem for the pentasodium salt indicates 'Not determined' across various exposure routes (oral, parenteral, dermal, inhalation), suggesting a low general risk profile in cosmetic applications.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Pentasodium Ethylenediamine Tetramethylene Phosphonate is a valuable chelating and viscosity controlling agent crucial for maintaining product stability and desired texture in formulations.

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