Description

4,4'-Diaminobiphenyl-3,3'-Dicarboxylic Acid is a high-purity aromatic diamine-dicarboxylic acid derivative, serving as a critical bifunctional building block in advanced organic synthesis. Its molecular structure, featuring both amine and carboxylic acid functional groups on a biphenyl core, makes it an essential precursor for creating high-performance polymers and specialty chemicals. This compound is primarily sought after by R&D laboratories and industrial manufacturers in the polymer, pharmaceutical intermediate, and liquid crystal industries for developing novel materials with tailored properties.

Application

• Polymer Synthesis: Key monomer for the production of high-temperature resistant polyamides, polyimides, and aramids.
• Pharmaceutical Intermediates: Serves as a versatile scaffold in the synthesis of complex active pharmaceutical ingredients (APIs).
• Liquid Crystal Materials: Used in the manufacture of monomers for liquid crystal polymers (LCPs) and display materials.
• Metal-Organic Frameworks (MOFs): Acts as an organic linker in the construction of porous coordination polymers for catalysis and gas storage.
• Dye and Pigment Intermediates: Precursor for synthesizing specialized azo dyes and organic pigments.
• Cross-linking Agent: Utilized in epoxy resin systems and other thermosetting polymers to enhance mechanical and thermal properties.
• Corrosion Inhibitors: Component in formulations for high-performance corrosion protection coatings.
• Research & Development: Valuable reagent in academic and industrial research for exploring new organic materials and supramolecular chemistry.

Basic Information

Product Name	4,4'-Diaminobiphenyl-3,3'-Dicarboxylic Acid
CAS No.	2130-56-5
Molecular Formula	C14H12N2O4
Molecular Weight	272.26 g/mol
Synonyms	3,3'-Dicarboxybenzidine; 4,4'-Diamino-[1,1'-biphenyl]-3,3'-dicarboxylic acid; Benzidine-3,3'-dicarboxylic acid; Biphenyl-4,4'-diamine-3,3'-dicarboxylic acid; 3,3'-Diaminobiphenyl-4,4'-dicarboxylic acid (isomer); DADB; Contact for additional trade names.
EINECS	218-352-3

Quality Control

Our 4,4'-Diaminobiphenyl-3,3'-Dicarboxylic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for advanced synthetic applications. Certificates of Analysis (COA) detailing batch-specific results are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). The compound is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of moisture from the air.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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