Description

Tetraammonium (1-Hydroxyethylidene)Bisphosphonate is a water-soluble ammonium salt of the widely used bisphosphonate scale and corrosion inhibitor, HEDP. This compound matters for industrial water treatment systems where it provides excellent sequestration of metal ions like calcium and magnesium, preventing scale formation and corrosion under alkaline conditions. It is primarily needed by chemical suppliers, water treatment formulators, and industrial facilities in sectors such as cooling water systems, oilfield operations, and textile processing, where maintaining system efficiency and longevity is critical.

Application

• Industrial Water Treatment: A key component in cooling water, boiler water, and reverse osmosis systems to inhibit scale (calcium carbonate, sulfate) and control corrosion.
• Oilfield Chemistry: Used in squeeze treatments and water flooding operations for scale inhibition in downhole and production equipment.
• Textile & Dyeing Auxiliary: Acts as a chelating agent and stabilizer in peroxide bleaching baths and dyeing processes to improve color fastness and fabric quality.
• Personal Care & Detergent Formulations: Serves as a chelating agent in liquid soaps, shampoos, and industrial cleaners to sequester hard water ions and enhance cleaning efficacy.
• Pulp & Paper Processing: Used to control metal ion interference and prevent scale in pulp bleaching and papermaking processes.
• Metal Surface Treatment: Employed in cleaning and pretreatment formulations to prevent metal salt deposition and improve subsequent coating adhesion.

Basic Information

Product Name	Tetraammonium (1-Hydroxyethylidene)Bisphosphonate
CAS No.	7101-46-4
Molecular Formula	C2H12N4O7P2
Molecular Weight	266.09 g/mol
Synonyms	Ammonium HEDP; Tetraammonium Etidronate; HEDP Tetraammonium Salt; (1-Hydroxyethylidene)bisphosphonic Acid Tetraammonium Salt; ATMP? (common confusion, but distinct); Dequest 2016 (trade name); Phosphonic Acid, (1-Hydroxyethylidene)bis-, Tetraammonium Salt; Etidronic Acid Tetraammonium Salt
EINECS	Contact for details

Quality Control

Our Tetraammonium (1-Hydroxyethylidene)Bisphosphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, pH, density, and impurity profiles is provided and available upon request, supporting traceability and compliance for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 and caking.

Specification

Item	Specification
Appearance	Clear to slightly yellow liquid
Assay (as active acid)	≥ 58.0 %
pH (1% aqueous solution)	6.0 - 8.0
Density (20°C)	1.30 - 1.40 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.