Description

(1-Hydroxyethylidene)Bisphosphonic Acid, Ammonium Salt is a highly effective phosphonate compound widely used as a scale and corrosion inhibitor in industrial water treatment systems. Its primary value lies in its exceptional ability to chelate metal ions and prevent the precipitation of scale-forming salts like calcium carbonate and calcium sulfate, even under high-stress conditions. This product is essential for industries requiring reliable water management, including cooling towers, reverse osmosis systems, oilfield operations, and in the formulation of cleaning and detergent products.

Application

• Industrial Water Treatment: A key component in cooling water and boiler water treatment programs to control scale and inhibit corrosion of metal surfaces.
• Oilfield Chemistry: Used in scale squeeze treatments and as an additive in drilling and completion fluids to prevent mineral scale deposition in wells and pipelines.
• Reverse Osmosis (RO) Systems: Acts as an antiscalant to protect RO membranes from fouling by sparingly soluble salts, improving system efficiency and lifespan.
• Detergent and Cleaning Formulations: Serves as a builder and chelating agent to sequester hardness ions (Ca²⁺, Mg²⁺), enhancing cleaning performance.
• Pulp and Paper Industry: Employed to control scale in process water and bleaching systems, and to stabilize hydrogen peroxide.
• Textile Processing: Used to prevent scale buildup in dyeing and finishing baths, ensuring consistent fabric quality.
• Metal Surface Treatment: Functions as a corrosion inhibitor and sequestrant in metal cleaning and plating baths.

Basic Information

Product Name	(1-Hydroxyethylidene)Bisphosphonic Acid, Ammonium Salt
CAS No.	34274-29-8
Molecular Formula	C₂H₁₁NO₇P₂
Molecular Weight	235.06 g/mol
Synonyms	Ammonium (1-Hydroxyethylidene)bisphosphonate; Ammonium HEDP; HEDP, Ammonium Salt; 1-Hydroxyethane-1,1-diphosphonic Acid Ammonium Salt; Etidronic Acid Ammonium Salt; Dequest 2016 (Trade Name); Phosphonic acid, (1-hydroxyethylidene)bis-, ammonium salt; Aminotris(methylenephosphonic acid) related salt (common industry grouping)
EINECS	251-922-5

Quality Control

Our (1-Hydroxyethylidene)Bisphosphonic Acid, Ammonium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for active content, pH, and impurity profiles. Certificates of Analysis (COA) documenting purity, identity, and key physical-chemical parameters are available for every shipment upon request, providing full traceability and compliance assurance for your processes.

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); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which may lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Assay (as active acid)	≥ 60.0 %
pH (1% aqueous solution)	2.0 - 4.0
Density (20°C)	1.30 - 1.45 g/cm³
Identification (IR)	Conforms
Iron (Fe)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm

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