Description

Biphenyl-4,4'-Dicarboxylic Acid is a high-purity aromatic dicarboxylic acid monomer essential for synthesizing advanced polymers and fine chemicals. This compound matters for its role as a rigid, linear building block, imparting thermal stability and mechanical strength to the resulting materials. It is needed by R&D chemists and production engineers in the polymer, liquid crystal, and pharmaceutical intermediate industries seeking to develop high-performance products.

Application

• Polymer Synthesis: A key monomer for producing high-performance polyesters (e.g., PEN, PBN), polyamides, and polyimides, valued for their thermal and chemical resistance.
• Liquid Crystal Polymers (LCPs): Serves as a core rigid-rod component in the manufacture of LCPs used in electronics, aerospace, and automotive applications.
• Pharmaceutical Intermediates: Used in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs) requiring a biphenyl backbone.
• Metal-Organic Frameworks (MOFs): Acts as an organic linker in the construction of porous MOF materials for gas storage, separation, and catalysis.
• Dye and Pigment Manufacturing: Employed as a precursor in the synthesis of specialized dyes and optical brighteners.
• Crosslinking Agent: Utilized in epoxy and other resin systems to enhance crosslink density and material properties.
• Academic & Industrial Research: A valuable reagent for material science research and the development of novel polymeric architectures.

Basic Information

Product Name	Biphenyl-4,4'-Dicarboxylic Acid
CAS No.	787-70-2
Molecular Formula	C14H10O4
Molecular Weight	242.23 g/mol
Synonyms	4,4'-Biphenyldicarboxylic Acid; [1,1'-Biphenyl]-4,4'-dicarboxylic acid; p,p'-Biphenyldicarboxylic Acid; Diphenic Acid (Note: often refers to 2,2'-isomer); 4,4'-Dicarboxybiphenyl; Biphenyl-4,4'-dicarboxylate (deprotonated form); BPDC (common abbreviation in MOF chemistry); 4,4'-Bibenzoic Acid
EINECS	212-324-8

Quality Control

Our Biphenyl-4,4'-Dicarboxylic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets exacting specifications for research and industrial use. Certificates of Analysis (COA) detailing all test results are provided and 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). The product is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent caking or hydrolysis.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	> 300 °C
Loss on Drying	≤ 0.5%
Residue on Ignition (Sulfated Ash)	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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