Description

Edtac CAS NO 66458-09-1 is a high-purity chelating agent, specifically the tetrasodium salt of ethylenediaminetetraacetic acid (EDTA). This compound is valued for its exceptional ability to sequester di- and trivalent metal ions, effectively controlling unwanted metal-catalyzed reactions and improving product stability. It is an essential raw material for manufacturers in the water treatment, personal care, textile processing, and pulp & paper industries who require reliable metal ion control to ensure process efficiency and product quality.

Application

• Industrial Water Treatment: Acts as a scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems by chelating calcium, magnesium, and iron ions.
• Personal Care & Cosmetics: Used as a preservative booster and stabilizer in shampoos, creams, and lotions to inactivate metal ions that can degrade formulations.
• Textile Processing: Serves as a chelant in dyeing and bleaching baths to prevent metal-ion interference, ensuring consistent color and fabric quality.
• Pulp & Paper Manufacturing: Enhances bleaching efficiency and brightness of pulp by chelating transition metals that catalyze peroxide decomposition.
• Agrochemical Formulations: Improves the stability of micronutrient fertilizers and certain pesticide formulations by preventing metal-catalyzed degradation.
• Cleaning Products: Incorporated into industrial and institutional cleaners to boost surfactant performance and prevent soap scum formation.
• Laboratory & Analytical Reagent: Used in buffer solutions and as a complexometric titrant for the determination of various metal ions.

Basic Information

Product Name	Edtac
CAS No.	66458-09-1
Molecular Formula	C10H12N2Na4O8
Molecular Weight	380.17 g/mol
Synonyms	Tetrasodium EDTA; Edetate Sodium; Tetrasodium Edetate; EDTA Tetrasodium Salt; Ethylenediaminetetraacetic Acid Tetrasodium Salt; (Ethylenedinitrilo)tetraacetic Acid Tetrasodium Salt; Sequestrene NA4; Trilon B
EINECS	266-376-1

Quality Control

Our Edtac is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure it meets high-purity standards suitable for industrial and specialty applications. A comprehensive Certificate of Analysis (COA), detailing parameters such as assay, heavy metal content, and loss on drying, is provided with every shipment to guarantee consistent quality and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the original container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can lead to caking.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 99.0%
pH (1% Solution)	10.5 - 11.5
Loss on Drying	≤ 10.0%
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 10 ppm

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