Description

2-Hydroxy-4-Phosphonobutyric Acid is a multifunctional organophosphorus compound valued for its excellent chelating and scale inhibition properties. This makes it a critical performance additive in water treatment and industrial cleaning formulations, where it effectively controls mineral scaling and corrosion. It is primarily sought by manufacturers in the water treatment, detergent, and textile processing industries for its stability and synergistic effects with other treatment chemicals.

Application

• Industrial Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling water systems, boilers, and reverse osmosis membranes.
• Detergent & Cleaning Formulations: Serves as a builder and chelating agent to sequester calcium and magnesium ions, enhancing cleaning efficiency and preventing scale deposition.
• Textile Processing: Used as a stabilizer and sequestrant in peroxide bleaching baths and dyeing processes to improve fabric quality and process control.
• Pulp & Paper Manufacturing: Functions as a chelant in bleaching sequences and process water systems to improve brightness and prevent metal-ion catalyzed degradation.
• Metal Surface Treatment: Employed in metal cleaning and plating baths to control water hardness and prevent precipitation of insoluble salts.
• Oilfield Chemicals: Incorporated into scale inhibitor formulations for downhole and topside applications to control carbonate and sulfate scales.

Basic Information

Product Name	2-Hydroxy-4-Phosphonobutyric Acid
CAS No.	51360-19-1
Molecular Formula	C4H9O6P
Molecular Weight	184.09 g/mol
Synonyms	HPBA; 4-Phosphonobutanoic acid, 2-hydroxy-; 2-Hydroxy-4-phosphonobutanoic acid; Phosphonobutyric acid; Hydroxyphosphonobutyric acid; PBTC precursor; 1-Hydroxy-1-phosphonopropane-3-carboxylic acid; 2-Hydroxy-1,4-butanedioic acid 4-phosphate
EINECS	257-172-1

Quality Control

Our production of 2-Hydroxy-4-Phosphonobutyric Acid adheres to stringent quality management protocols. Every batch is tested to ensure high purity and consistent performance, with specifications meeting the demands of industrial and water treatment applications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
pH (1% aqueous solution)	1.5 - 3.0
Iron (Fe)	≤ 50 ppm
Chloride (Cl)	≤ 100 ppm

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