Description

n-Hydroxyethylenediaminetriacetic Acid, Trisodium Salt is a high-purity, water-soluble chelating agent and complexing salt. This compound is valued for its strong sequestering power towards di- and trivalent metal ions, particularly under alkaline conditions. It is essential for industries requiring precise control of metal ion activity to prevent catalysis, precipitation, or degradation. Key applications span from industrial cleaning and water treatment to serving as a critical intermediate in pharmaceutical synthesis and agrochemical formulations.

Application

• Industrial Cleaning & Descaling: A key component in alkaline cleaning formulations for boilers, heat exchangers, and membranes, effectively sequestering calcium, magnesium, and iron ions to prevent scale formation and enhance detergent efficiency.
• Water Treatment: Used to control water hardness and inhibit scale in cooling towers, reverse osmosis systems, and industrial water circuits by chelating problematic metal cations.
• Chemical Synthesis & Catalysis: Acts as a stabilizing ligand or metal scavenger in various organic synthesis processes, pharmaceutical intermediate production, and as a component in homogeneous catalyst systems.
• Agrochemicals: Incorporated into pesticide and herbicide formulations to improve stability and bioavailability by chelating metal impurities that can cause decomposition.
• Pulp & Paper Processing: Enhances bleaching processes and improves pulp brightness by chelating transition metals like manganese and iron that catalyze peroxide decomposition.
• Textile Processing: Used in dyeing and bleaching baths to sequester metal ions present in water or fabric, ensuring consistent color quality and preventing catalytic damage to fibers.
• Laboratory Research: Employed as a buffering agent and metal ion buffer in biochemical and analytical chemistry applications requiring controlled metal ion concentrations.

Basic Information

Product Name	n-Hydroxyethylenediaminetriacetic Acid, Trisodium Salt
CAS No.	4263-06-3
Molecular Formula	C10H15N3Na3O9
Molecular Weight	449.20 g/mol
Synonyms	HEDTA Trisodium Salt; Trisodium N-Hydroxyethylethylenediaminetriacetate; N-(2-Hydroxyethyl)ethylenediamine-N,N',N'-triacetic Acid Trisodium Salt; Trisodium HEDTA; Geigy Sequesterene NA3; Versenol 120; Chel D 120; Komplexon VII
EINECS	224-253-1

Quality Control

Our n-Hydroxyethylenediaminetriacetic Acid, Trisodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, heavy metal content, and loss on drying are available for every shipment. We support compliance with relevant industrial and regulatory frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
pH (5% Solution)	10.0 - 12.0
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Iron (Fe)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.