Description

Benzoic Acid, 4,4'-Phosphinicobis- is a specialized organophosphorus compound that serves as a high-performance intermediate and functional additive. Its unique structure, featuring phosphinic acid bridges between benzoic acid moieties, provides valuable properties for advanced material synthesis and stabilization. This chemical is essential for manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking to enhance product performance and thermal stability.

Application

• Polymer Additive: Acts as a flame retardant synergist and thermal stabilizer in engineering plastics and high-performance polymers.
• Pharmaceutical Intermediate: Used in the synthesis of novel active pharmaceutical ingredients (APIs) and prodrugs requiring phosphinate linkages.
• Ligand and Chelating Agent: Serves as a building block for metal-organic frameworks (MOFs) and catalysts due to its bifunctional coordination sites.
• Crosslinking Agent: Employed in the production of specialty resins and coatings to improve hardness and chemical resistance.
• Analytical Reagent: Utilized in research and development for analytical method development and as a reference standard.
• Material Science: A precursor for advanced ceramics and composite materials requiring organic-inorganic hybrid structures.

Basic Information

Product Name	Benzoic Acid, 4,4'-Phosphinicobis-
CAS No.	96217-57-1
Molecular Formula	C14H12O6P2
Molecular Weight	362.19 g/mol
Synonyms	4,4'-Phosphinicobis(benzoic acid); Bis(4-carboxyphenyl)phosphinic acid; 4,4'-(Phosphinico)dibenzoic acid; 4-Carboxyphenylphosphinic acid dimer; P,P'-Dibenzoic acid phosphinic acid; [Phosphinobis(4,1-phenylene)]dibenzoic acid
EINECS	Contact for details

Quality Control

Our Benzoic Acid, 4,4'-Phosphinicobis- is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets exacting specifications for high-purity intermediates. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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