EDTA disodium salt (EDTA2Na) CAS 6381-92-6

Introduction to EDTA2Na

EDTA Disodium Salt is an aminocarboxylic chelating agent with multiple coordination sites on its ethylenediamine backbone. It forms stable, water-soluble chelate complexes with most divalent and polyvalent metal ions over a wide pH range. It appears as white crystalline powder at room temperature, readily soluble in water and nearly insoluble in organic solvents.

Industrial production follows controlled condensation and crystallization processes to achieve consistent purity and chelating capacity. The compound effectively sequesters calcium, magnesium, iron and copper ions, preventing metal-catalyzed oxidation, discoloration and scale formation in aqueous systems.

EDTA2Na Chemical & Physical Properties

Applications of EDTA2Na

Water treatment: Sequesters calcium and magnesium ions to soften water and inhibit scale formation in boiler systems, cooling towers and reverse osmosis processes. It also chelates iron and manganese to prevent discoloration and sedimentation.

Personal care and cosmetics: Added to skin care, hair care and oral care products to chelate trace metal ions. It prevents product oxidation, discoloration and rancidity, extending shelf life and maintaining formulation stability.

Textile dyeing and finishing: Chelates metal impurities in dye baths to prevent shade shift, dye precipitation and fiber degradation. It improves dye uniformity and color fastness across natural and synthetic fiber processing.

Food and pharmaceutical processing: Acts as a stabilizer and sequestrant to inhibit metal-catalyzed oxidation, preserving flavor, color and active ingredient potency in food, beverage and pharmaceutical formulations.

Industrial cleaning: Dissolves metal oxide scales and hard water deposits in equipment cleaning operations. It enhances cleaning efficiency by keeping solubilized metals in solution during rinsing.

Storage & Safety Precautions for EDTA2Na

• Store in tightly sealed moisture-resistant packaging in cool, dry warehouses. The material is hygroscopic and absorbs atmospheric moisture, leading to caking and reduced flowability.
• Handle as a mild irritant. Wear safety goggles and dust masks during bulk powder transfer. Avoid direct contact with eyes and prolonged skin contact.
• Keep separated from strong acids and oxidizing agents. Store away from food and feed materials to prevent cross-contamination.

EDTA2Na FAQ

Q: What is EDTA Disodium Salt (EDTA2Na) mainly used for?

A: It sequesters metal ions for water softening, personal care stabilization, textile dyeing, food preservation and industrial cleaning.

Q: Does EDTA2Na work across different pH levels?

A: Yes, it delivers stable chelating performance over a wide pH range, adapting to most aqueous industrial systems.

Q: What storage conditions does EDTA2Na require?

A: Store sealed in cool dry areas. It is hygroscopic and may cake when exposed to humid environments.