The Beauty & Personal Care Brand Builder Series

Tetrahydroxypropyl Ethylenediamine

The Beauty & Personal Care Brand Builder Series

Tetrahydroxypropyl Ethylenediamine

The Chelating pH Buffer

Tetrahydroxypropyl Ethylenediamine is a multifunctional amine used as a chelating agent and pH buffer — it locks up stray metal ions and helps hold a formula at its target pH.

By neutralizing the trace metals that catalyze spoilage and by stabilizing pH, it helps keep colors true, preservatives effective and formulas stable over time.

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GOOD

Chelating Agent

A chelating agent and pH buffer that binds trace metal ions and stabilizes formulas against degradation.

Used in moisturizers, creams and serums and treatment formulas.

Formulators needing metal-ion control, pH buffering and improved formula stability.

Tetrahydroxypropyl Ethylenediamine, THPED

Private Label Formulas

🇺🇸 MADE IN USA | 🚀 READY TO LAUNCH

Benefits of Tetrahydroxypropyl Ethylenediamine

A chelating agent and pH buffer that stabilizes formulas and protects them from metal-driven degradation.

  • Chelation: Binds trace metal ions (iron, copper) that would otherwise trigger rancidity and discoloration.
  • pH Buffering: Helps set and hold a formula’s target pH.
  • Formula Stability: Protects color, scent and preservative performance over shelf life.
  • Boosts Preservation: Chelation supports the efficiency of the preservative system.
  • Low Use Level: Effective in small amounts.

How It Works

Metal ions such as iron and copper act as catalysts that speed up oxidation and preservative breakdown. Tetrahydroxypropyl Ethylenediamine wraps around these ions and holds them inactive (chelation), while its amine groups help buffer pH — together keeping the formula stable, its color true and its preservative system working as intended.

Formulating with Tetrahydroxypropyl Ethylenediamine

Tetrahydroxypropyl Ethylenediamine is added to the water phase at low levels as a chelator/pH aid, often alongside the preservative system. Adjust to reach the target pH and observe good manufacturing practice.

Safety Analysis

Tetrahydroxypropyl Ethylenediamine is used at low levels and is well tolerated in finished formulas. As always, substantiate the finished product’s safety (e.g. patch / HRIPT testing) in line with MoCRA requirements.

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