Description

4,4''-Diamino-p-Terphenyl is a high-purity aromatic diamine monomer characterized by its rigid, linear biphenyl core. This compound matters as a critical building block for synthesizing advanced polymers and organic electronic materials, where its molecular structure imparts exceptional thermal stability and planarity. It is essential for R&D and production in industries focused on high-performance polyimides, liquid crystal polymers, and as a precursor for conductive polymers and metal-organic frameworks (MOFs).

Application

• Polymer Synthesis: A key monomer for producing high-temperature, high-strength polyimides and polyamides used in aerospace and electronics.
• Liquid Crystal Displays (LCDs): Serves as a core component in the synthesis of liquid crystal polymers and alignment layers for display technology.
• Organic Electronics: Utilized as a precursor for hole-transport materials and conductive polymers in OLEDs and organic photovoltaics.
• Pharmaceutical Intermediates: Acts as a versatile building block in the synthesis of complex active pharmaceutical ingredients (APIs).
• Metal-Organic Frameworks (MOFs): Functions as an organic linker to create porous coordination polymers for gas storage and catalysis.
• Dye & Pigment Manufacturing: Used in the synthesis of advanced azo dyes and pigments requiring high thermal and chemical stability.
• Analytical Chemistry: Employed as a reagent or standard in chromatographic analysis and spectroscopic studies.
• Cross-linking Agent: Enhances the mechanical properties of epoxy resins and other thermosetting polymers.

Basic Information

Product Name	4,4''-Diamino-p-Terphenyl
CAS No.	3365-85-3
Molecular Formula	C18H16N2
Molecular Weight	260.33 g/mol
Synonyms	4,4''-Diamino-1,1':4',1''-terphenyl; p-Terphenyl-4,4''-diamine; 4,4''-Diaminoterphenyl; 4,4''-Bis(aminophenyl)biphenyl; [1,1':4',1''-Terphenyl]-4,4''-diamine; BAPB (4,4'-Bis(4-aminophenoxy)biphenyl, related); DAN (Diaminonaphthalene, context-specific); Benzidine-based diamine (structural analog)
EINECS	222-155-8

Quality Control

Our 4,4''-Diamino-p-Terphenyl is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure compliance with exacting industry standards. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specified parameters. For specialized applications, we can tailor specifications to meet specific pharmaceutical (GMP), electronic, or polymer grade requirements.

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/59-77°F). Due to its light-sensitive and easily oxidized nature, long-term storage is recommended under an inert atmosphere (nitrogen or argon) to maintain product integrity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	245 - 250 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Single Impurity (HPLC)	≤ 1.0%

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