Description

[1,1'-Biphenyl]-3,3'-Dicarboxylic Acid, 5,5'-Diamino- is a high-purity aromatic diamine-dicarboxylic acid monomer, serving as a critical building block for advanced polymers. Its bifunctional structure, featuring both amine and carboxylic acid groups, enables the synthesis of specialized polyamides, polyimides, and polybenzimidazoles with exceptional thermal and mechanical properties. This compound is essential for manufacturers in the high-performance plastics, specialty coatings, and advanced materials sectors seeking to develop next-generation engineering polymers.

Application

• High-Performance Polymer Synthesis: A key monomer for producing thermally stable polyimides and polyamides used in aerospace and electronics.
• Specialty Polybenzimidazoles (PBI): Used in the manufacture of PBI fibers and resins for extreme environment applications requiring flame resistance and chemical stability.
• Advanced Epoxy Curing Agents & Hardeners: Imparts high cross-link density and thermal properties to epoxy resin systems for composite materials.
• Liquid Crystal Polymers (LCPs): Serves as a rigid-rod monomer component in the synthesis of LCPs for precision molded components.
• Pharmaceutical Intermediates: Used in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Metal-Organic Frameworks (MOFs): Acts as an organic linker in the construction of porous coordination polymers for catalysis and gas storage.
• Dye & Pigment Intermediates: A precursor for manufacturing high-value azo dyes and organic pigments.
• Corrosion-Resistant Coatings: Incorporated into coating formulations to enhance adhesion and chemical resistance on metal substrates.

Basic Information

Product Name	[1,1'-Biphenyl]-3,3'-Dicarboxylic Acid, 5,5'-Diamino-
CAS No.	54262-81-6
Molecular Formula	C14H12N2O4
Molecular Weight	272.26 g/mol
Synonyms	5,5'-Diamino-[1,1'-biphenyl]-3,3'-dicarboxylic acid; 3,3'-Diaminobiphenyl-5,5'-dicarboxylic Acid; 5,5'-Diaminobiphenyl-3,3'-dicarboxylic Acid; 3,3'-Dicarboxy-5,5'-diaminobiphenyl; Biphenyl-3,3',5,5'-tetracarboxylic Acid Dianhydride Precursor; DADBDA; 5,5'-Diamino-3,3'-biphenyldicarboxylic Acid
EINECS	Contact for details

Quality Control

Our [1,1'-Biphenyl]-3,3'-Dicarboxylic Acid, 5,5'-Diamino- is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for polymer synthesis and fine chemical applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place 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 quality and reactivity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Single Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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