Description

Disodium Dihydrogen [[(2-Hydroxyethyl)Imino]Bis(Methylene)]Bisphosphonate is a highly effective organic phosphonate compound widely used as a scale and corrosion inhibitor in industrial water treatment systems. Its unique molecular structure provides superior chelating and threshold inhibition properties, making it a critical component for maintaining operational efficiency and protecting capital equipment. This product is essential for industries such as power generation, oil & gas, and chemical manufacturing where controlling mineral scale and metal ion precipitation is paramount for process reliability and cost management.

Application

• Industrial Water Treatment: Primary application as a high-performance scale inhibitor for calcium carbonate, calcium sulfate, and barium sulfate in cooling towers, boilers, and reverse osmosis (RO) systems.
• Corrosion Inhibition: Functions as a synergistic corrosion inhibitor for ferrous and non-ferrous metals in closed-loop and open recirculating cooling water systems.
• Detergent & Cleaning Formulations: Used as a builder and chelating agent in industrial and institutional cleaning products to sequester hardness ions and enhance surfactant performance.
• Pulp & Paper Processing: Employed to control scale formation in digesters, washers, and bleach plants, and to stabilize hydrogen peroxide in bleaching stages.
• Textile & Dyeing Auxiliary: Acts as a dispersant and sequestrant to prevent metal-ion interference and improve dye uniformity and fastness.
• Oilfield Applications: Used in squeeze treatments and water flooding operations to prevent downhole and topside scale deposition.
• Personal Care Products: Incorporated as a stabilizing and chelating agent in certain cosmetic and personal care formulations.

Basic Information

Product Name	Disodium Dihydrogen [[(2-Hydroxyethyl)Imino]Bis(Methylene)]Bisphosphonate
CAS No.	84215-54-3
Molecular Formula	C6H14NNa2O9P2
Molecular Weight	337.09 g/mol
Synonyms	Dequest® 2066; HEDP.Na2; 1-Hydroxyethylidene-1,1-diphosphonic Acid Disodium Salt; Etidronic Acid Disodium Salt; (1-Hydroxyethylidene)bisphosphonic Acid Disodium Salt; Disodium Etidronate; Phosphonic Acid, (1-Hydroxyethylidene)bis-, Disodium Salt; Amino Tris(Methylene Phosphonic Acid) Derivative
EINECS	Contact for details

Quality Control

Our Disodium Dihydrogen [[(2-Hydroxyethyl)Imino]Bis(Methylene)]Bisphosphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry standards. Certificates of Analysis (COA) detailing assay, impurity profile, and physical parameters are available upon request to support your quality assurance and regulatory needs.

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 material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0 %
pH (1% Aqueous Solution)	4.0 - 6.0
Water Content	≤ 5.0 %
Chloride (as Cl)	≤ 0.1 %
Iron (Fe)	≤ 50 ppm

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