Description

Diammonium Dihydrogen (1-Hydroxyethylidene)Bisphosphonate is a highly effective phosphonate compound widely used as a scale and corrosion inhibitor. This product matters for industrial water treatment systems where it provides superior performance in controlling calcium carbonate and sulfate scales under demanding conditions. It is primarily needed by professionals in the chemical water treatment, oilfield, and detergent formulation industries seeking reliable and efficient phosphonate-based solutions.

Application

• Industrial Water Treatment: A key component in cooling water and boiler water treatment programs for scale and corrosion inhibition.
• Oilfield Chemistry: Used in squeeze treatments and as an additive in drilling fluids to prevent mineral scale deposition in wells and surface equipment.
• Detergent & Cleaning Formulations: Acts as a builder and chelating agent to sequester hardness ions (calcium, magnesium) in liquid and powder detergents.
• Pulp & Paper Processing: Employed to control scale in digesters, washers, and bleach plants, improving operational efficiency.
• Textile Processing: Used in dyeing and bleaching baths to prevent scale formation on machinery and fabric.
• Metal Surface Treatment: Serves as a stabilizing agent in pickling baths and for surface passivation.

Basic Information

Product Name	Diammonium Dihydrogen (1-Hydroxyethylidene)Bisphosphonate
CAS No.	66052-90-2
Molecular Formula	C2H11N2O7P2
Molecular Weight	236.07 g/mol
Synonyms	Diammonium Etidronate; Ammonium Etidronate; Ammonium (1-Hydroxyethylidene)bisphosphonate; HEDP Diammonium Salt; Etidronic Acid Diammonium Salt; Dequest 2016D (Trade Name); 1-Hydroxyethane-1,1-diphosphonic Acid Diammonium Salt; AEHDP
EINECS	266-124-8

Quality Control

Our Diammonium Dihydrogen (1-Hydroxyethylidene)Bisphosphonate 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 and performance characteristics are available upon request to support your quality assurance protocols.

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); ensure the original container is kept 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 solid
Identification (IR)	Conforms
Assay (HEDP Basis)	≥ 58.0 %
pH (1% Aqueous Solution)	5.0 - 7.0
Water Content	≤ 2.0 %
Chloride (as Cl)	≤ 0.1 %
Iron (Fe)	≤ 10 ppm

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