Description

3-Hydroxyphenylphosphonic Acid is a versatile organophosphorus compound featuring both phenolic and phosphonic acid functional groups. This unique structure makes it a valuable intermediate for synthesizing complex molecules and functional materials where precise chemical modification is required. It is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty polymer industries seeking to incorporate phosphonate moieties into their products.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting bone-related disorders.
• Agrochemical Synthesis: Used in the production of herbicides, plant growth regulators, and other crop protection agents with systemic activity.
• Metal Chelation & Surface Treatment: Acts as an effective chelating agent and corrosion inhibitor in metal finishing, water treatment, and scale prevention formulations.
• Flame Retardant Synergist: Incorporated into polymer systems, such as epoxy resins and polyesters, to enhance flame retardant properties.
• Adhesive & Coating Additive: Improves adhesion to metal and other difficult substrates in industrial coatings and adhesive formulations.
• Research & Development: Serves as a crucial reagent in organic synthesis and material science research for creating new functionalized molecules.

Basic Information

Product Name	3-Hydroxyphenylphosphonic Acid
CAS No.	33733-31-2
Molecular Formula	C6H7O4P
Molecular Weight	174.09 g/mol
Synonyms	(3-Hydroxyphenyl)phosphonic Acid; m-Hydroxyphenylphosphonic Acid; 3-Hydroxybenzenephosphonic Acid; Phosphonic Acid, (3-Hydroxyphenyl)-; NSC 163082; m-Hydroxy Phenyl Phosphonic Acid; 3-HPA; 3-Hydroxy PPA
EINECS	Contact for details

Quality Control

Our 3-Hydroxyphenylphosphonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet the high standards required for industrial and research applications. Certificates of Analysis (COA) detailing specific batch results are available upon request.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details
Heavy Metals	< 20 ppm

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