Description

Bis(4-Carboxyphenyl)Phenyl-Phosphine Oxide is a high-purity, multifunctional organophosphorus compound featuring both phosphine oxide and carboxylic acid groups. This unique structure makes it a valuable intermediate and ligand in advanced material synthesis and catalysis. It is primarily sought by manufacturers and R&D teams in the pharmaceutical, polymer, and specialty chemical sectors for developing flame retardants, high-performance polymers, and metal-organic frameworks.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel active pharmaceutical ingredients (APIs) and as a building block for complex molecules.
• Polymer & Resin Modifier: Acts as a monomer or additive to enhance thermal stability and flame retardancy in engineering plastics and epoxy resins.
• Metal-Organic Framework (MOF) Synthesis: Serves as a versatile organic linker due to its multiple coordination sites for constructing porous materials.
• Catalysis & Ligand Chemistry: Utilized as a ligand in transition metal catalysis for various organic transformations, including cross-coupling reactions.
• Specialty Chemical Synthesis: A key precursor for creating other functionalized phosphine oxides and carboxylic acid derivatives.
• Flame Retardant Formulations: Incorporated into materials to improve fire resistance properties without compromising mechanical integrity.

Basic Information

Product Name	Bis(4-Carboxyphenyl)Phenyl-Phosphine Oxide
CAS No.	803-19-0
Molecular Formula	C20H15O5P
Molecular Weight	366.31 g/mol
Synonyms	4,4'-Carbonyldibenzoic Acid Phenylphosphine Oxide Derivative; Phenylbis(4-carboxyphenyl)phosphine oxide; [4-(Carboxyphenyl)phenylphosphinyl]benzoic Acid; Phosphinic acid, P,P-diphenyl-, 4,4'-dicarboxy derivative; BCPPO; Bis(p-carboxyphenyl)phenylphosphine oxide
EINECS	Contact for details

Quality Control

Our Bis(4-Carboxyphenyl)Phenyl-Phosphine Oxide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

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

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