Description

[[(2-Hydroxyethyl)Imino]Dimethylene]Bisphosphonic Acid, Sodium Salt is a highly effective organophosphorus compound belonging to the bisphosphonate class. It serves as a powerful chelating agent and scale inhibitor, valued for its ability to bind metal ions and prevent mineral deposits under demanding conditions. This product is essential for industrial water treatment, oilfield applications, and as a key intermediate in the synthesis of specialty chemicals and pharmaceuticals.

Application

• Industrial Water Treatment: Primary application as a highly effective scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems.
• Oilfield Chemicals: Used in drilling and production fluids to control scale formation (e.g., calcium carbonate, barium sulfate) and as a chelant in stimulation treatments.
• Detergent & Cleaning Formulations: Acts as a builder and sequestering agent to inactivate water hardness ions (Ca²⁺, Mg²⁺), enhancing cleaning efficiency.
• Textile & Pulp/Paper Processing: Employed to prevent scale buildup on equipment and to chelate metal ions that can interfere with bleaching and dyeing processes.
• Personal Care Products: Functions as a stabilizing and chelating agent in formulations to improve shelf-life and product performance.
• Chemical Synthesis: Serves as a versatile intermediate or ligand precursor for pharmaceuticals, agrochemicals, and advanced material science applications.

Basic Information

Product Name	[[(2-Hydroxyethyl)Imino]Dimethylene]Bisphosphonic Acid, Sodium Salt
CAS No.	22036-78-8
Molecular Formula	C4H12NNa3O10P2 (typical for trisodium salt)
Molecular Weight	Approx. 329.05 g/mol (for trisodium salt)
Synonyms	HEDP, Sodium Salt; Etidronate Sodium Salt; (1-Hydroxyethylidene)bisphosphonic Acid Trisodium Salt; Sodium Etidronate; Dequest 2016; 1-Hydroxyethane-1,1-diphosphonic Acid Sodium Salt; HEIDA Phosphonate; Phosphonic acid, [1-hydroxy-2-(2-hydroxyethylamino)ethylidene]bis-, sodium salt
EINECS	244-731-3

Quality Control

Our [[(2-Hydroxyethyl)Imino]Dimethylene]Bisphosphonic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each shipment to guarantee compliance with your technical requirements.

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 to prevent absorption of atmospheric moisture which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or granules
Identification (IR)	Conforms
Assay (as active acid)	Min. 90.0%
pH (1% aqueous solution)	9.0 - 11.0
Water Content	Max. 5.0%
Chloride (as Cl)	Max. 0.1%
Iron (Fe)	Max. 10 ppm

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