Description

1,3-Phenyldiphosphonic Acid is a specialized organophosphorus compound featuring a central benzene ring symmetrically substituted with two phosphonic acid groups. This unique structure makes it a valuable chelating agent and metal ion sequestrant, critical for applications requiring precise control over metal chemistry. It is primarily utilized by industries involved in water treatment, polymer stabilization, and the synthesis of advanced materials such as metal-organic frameworks (MOFs) and catalysts.

Application

• Scale and Corrosion Inhibitor in industrial water treatment and cooling systems.
• Stabilizer and Chelating Agent in polymer production to control metal catalyst residues.
• Precursor/Ligand for synthesizing metal-organic frameworks (MOFs) and coordination polymers.
• Intermediate in the manufacture of specialty surfactants and flame retardants.
• Analytical Reagent for the complexometric titration and separation of metal ions.
• Surface Treatment Agent for metals to improve adhesion and corrosion resistance.
• Additive in detergents and cleaning formulations for enhanced performance in hard water.

Basic Information

Product Name	1,3-Phenyldiphosphonic Acid
CAS No.	78271-46-2
Molecular Formula	C6H8O6P2
Molecular Weight	238.07 g/mol
Synonyms	1,3-Benzenediphosphonic Acid; m-Phenyldiphosphonic Acid; Benzene-1,3-diyldiphosphonic Acid; (3-Carboxyphenyl)phosphonic Acid; m-Benzenediphosphonic Acid; 1,3-Diphosphonatobenzene; P,P'-(1,3-Phenylene)diphosphonic Acid; 78271-46-2
EINECS	Contact for details

Quality Control

Our 1,3-Phenyldiphosphonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing key parameters such as assay, moisture content, and impurity profile is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in alkaline aqueous solutions

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