Description

[4-(4-Phosphonophenyl)Phenyl]Phosphonic Acid is a high-purity, bifunctional organophosphorus compound featuring two phosphonic acid groups on a biphenyl backbone. This unique structure makes it a valuable chelating agent and functional monomer for creating advanced materials with specific surface properties. It is primarily utilized by R&D chemists and material scientists in the development of specialty polymers, metal-organic frameworks (MOFs), and surface modification agents for industrial applications.

Application

• Functional Monomer for Polymers: Used in the synthesis of ion-exchange resins, proton-conducting membranes for fuel cells, and scale-inhibiting polymers for water treatment.
• Ligand for Metal Complexation: Serves as a chelating agent in the preparation of metal-organic frameworks (MOFs) and catalysts for specialized organic reactions.
• Surface Modification Agent: Applied to modify the surface of metals, ceramics, or oxides to improve adhesion, corrosion resistance, or biocompatibility.
• Precursor for Flame Retardants: Acts as a building block in the development of phosphorus-containing flame-retardant additives for plastics and textiles.
• Research & Development: Employed in academic and industrial R&D for studying phosphonate chemistry, crystal engineering, and material science.

Basic Information

Product Name	[4-(4-Phosphonophenyl)Phenyl]Phosphonic Acid
CAS No.	13817-79-3
Molecular Formula	C₁₂H₁₂O₆P₂
Molecular Weight	314.16 g/mol
Synonyms	4,4'-Biphenyldiphosphonic Acid; [1,1'-Biphenyl]-4,4'-diylbis(phosphonic acid); Biphenyl-4,4'-diylbisphosphonic acid; 4,4'-Diylbisphosphonic acid biphenyl; 4,4'-Biphenylbisphosphonic Acid; 4,4'-Bis(phosphonophenyl); P,P'-(1,1'-Biphenyl-4,4'-diyl)phosphonic acid
EINECS	Contact for details

Quality Control

Our production of [4-(4-Phosphonophenyl)Phenyl]Phosphonic Acid adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and NMR to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical characteristics is provided with every shipment and is 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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.0%
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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