Description

Hydroxyphosphono-Acetic Acid (HPAA) is a highly effective organic phosphonate compound widely recognized for its superior scale and corrosion inhibition properties. Its unique molecular structure, combining phosphonic acid and carboxylic acid functionalities, provides exceptional chelating power and thermal stability in aqueous systems. This makes it a critical component for industrial water treatment, oilfield applications, and detergent formulations where controlling mineral scale and protecting metal surfaces are paramount.

Application

• Industrial Water Treatment: A primary scale and corrosion inhibitor in cooling water systems, boilers, and reverse osmosis (RO) membranes.
• Oilfield Chemistry: Used in squeeze treatments and as an additive in drilling and completion fluids to prevent carbonate and sulfate scale formation in wells and production equipment.
• Detergent & Cleaning Formulations: Acts as a builder and sequestrant to enhance cleaning efficiency by inactivating water hardness ions (calcium, magnesium).
• Pulp & Paper Industry: Employed in bleaching processes and as a dispersant to control scale in paper mill water circuits.
• Textile Processing: Serves as a stabilizer and sequestrant in dyeing and finishing baths to improve color quality and process consistency.
• Personal Care Products: Functions as a chelating agent in shampoos, soaps, and other formulations to improve stability and shelf life.

Basic Information

Product Name	Hydroxyphosphono-Acetic Acid
CAS No.	23783-26-8
Molecular Formula	C₂H₅O₆P
Molecular Weight	156.03 g/mol
Synonyms	HPAA; Hydroxyphosphonoacetic Acid; Phosphonoacetic acid, hydroxy-; 1-Hydroxy-1-phosphonoacetic acid; Dequest 2010; Belclene 200; 2-Hydroxy-2-phosphonoacetic acid; (Hydroxyphosphinyl)acetic acid
EINECS	245-876-1

Quality Control

Our Hydroxyphosphono-Acetic Acid is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for active content, pH, and impurity profiles. Certificates of Analysis (COA) are provided with each shipment, documenting compliance with relevant industry standards. We support our global clients with the documentation required for their regulatory and supply chain 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). Keep away from strong oxidizers and strong bases. The product is hygroscopic; ensure containers are sealed after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Assay (as HPAA)	≥ 50.0 %
pH (1% aqueous solution)	1.5 - 2.5
Density (20°C)	1.30 - 1.45 g/cm³
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.