Description

(2-Hydroxyphenyl)Phosphonic Acid CAS NO 53104-46-4 is a versatile organophosphorus compound that serves as a key intermediate and functional additive in advanced chemical synthesis. Its unique structure, featuring both phenolic and phosphonic acid groups, provides excellent chelating and surface-modifying properties. This chemical is essential for manufacturers in the polymer, agrochemical, and specialty chemical industries seeking to develop flame-retardant materials, scale inhibitors, or metal-complexing agents.

Application

• Flame Retardant Synergist: Used as a reactive intermediate or additive in the production of flame-retardant polymers and resins, particularly for epoxy, polyurethane, and polyesters.
• Metal Surface Treatment: Acts as a corrosion inhibitor and adhesion promoter in metal pretreatment and conversion coatings for steel and aluminum.
• Scale and Corrosion Inhibitor: Employed in industrial water treatment formulations to control scale formation and inhibit corrosion in cooling and boiler water systems.
• Chelating Agent: Functions as a complexing agent for metal ions in various chemical processes, including catalysis, electroplating, and wastewater treatment.
• Pharmaceutical & Agrochemical Intermediate: Serves as a valuable building block in the synthesis of bioactive molecules, including certain pharmaceuticals and crop protection agents.
• Adhesive & Coating Additive: Enhances the performance of adhesives, sealants, and coatings by improving wetting, adhesion, and cross-linking properties.

Basic Information

Product Name	(2-Hydroxyphenyl)Phosphonic Acid
CAS No.	53104-46-4
Molecular Formula	C6H7O4P
Molecular Weight	174.09 g/mol
Synonyms	2-Hydroxyphenylphosphonic Acid; (o-Hydroxyphenyl)phosphonic Acid; Phenol, 2-phosphono-; Phosphonic acid, P-(2-hydroxyphenyl)-; Salicylphosphonic Acid; o-Hydroxyphenylphosphonic Acid; 2-Phosphonophenol
EINECS	Contact for details

Quality Control

Our (2-Hydroxyphenyl)Phosphonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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 product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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