Description

3,3'-Diamino-4,4'-Dihydroxybiphenyl is a high-purity aromatic diamine-diphenol compound, serving as a versatile bifunctional building block in advanced material synthesis. Its dual amine and phenol functionalities enable it to act as a key monomer for producing high-performance polymers and specialty chemicals. This compound is essential for R&D and production in industries such as polymer engineering, liquid crystal technology, and advanced resin formulation.

Application

• Polymer Synthesis: A critical monomer for the production of polybenzoxazoles (PBOs), polyimides, and other high-temperature, high-performance polymers.
• Liquid Crystal Intermediates: Used in the synthesis of advanced liquid crystal materials for display technologies.
• Epoxy & Phenolic Resin Curing Agent: Functions as a cross-linking agent and hardener, enhancing thermal and mechanical properties of cured resins.
• Dye and Pigment Intermediate: Serves as a precursor in the manufacture of complex organic dyes and pigments.
• Pharmaceutical Intermediate: Employed in the research and synthesis of specialized active pharmaceutical ingredients (APIs).
• Chelating Agent Precursor: Used to develop ligands and chelating agents for metal ion binding applications.
• Adhesive & Composite Materials: Imparts improved strength and thermal stability to advanced adhesives and composite matrices.
• Corrosion Inhibitor Formulation: A component in specialty chemical formulations designed to protect metals.

Basic Information

Product Name	3,3'-Diamino-4,4'-Dihydroxybiphenyl; >97%
CAS No.	4194-40-5
Molecular Formula	C12H12N2O2
Molecular Weight	216.24 g/mol
Synonyms	3,3'-Diamino-4,4'-biphenyldiol; 4,4'-Dihydroxy-3,3'-diaminobiphenyl; 3,3'-Dihydroxy-4,4'-diaminobiphenyl; Biphenyl-3,3',4,4'-tetrol, 3,3'-Diamino-; 3,3',4,4'-Biphenyltetramine, 4,4'-Dihydroxy-; DADHB; HAB; 3,3'-Diaminobiphenyl-4,4'-diol
EINECS	224-077-5

Quality Control

Our 3,3'-Diamino-4,4'-Dihydroxybiphenyl is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the specified >97% purity standard and is free from critical impurities. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation to maintain optimal purity and stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	> 97.0%
Melting Point	Contact for details
Loss on Drying	< 1.0%
Residue on Ignition	< 0.5%
Heavy Metals (as Pb)	< 20 ppm

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