Description

1,4-Benzenedicarboxylic Acid Bis(4-Aminophenyl) Ester is a high-purity aromatic diamine ester, a key monomer and intermediate in advanced polymer synthesis. Its bifunctional structure, featuring both ester and amine groups, makes it a versatile building block for creating materials with tailored thermal and mechanical properties. This compound is essential for R&D and production in high-performance plastics, specialty coatings, and advanced resin systems.

Application

• Polyimide Synthesis: Serves as a critical monomer for producing high-temperature, high-strength polyimide resins and films used in aerospace and electronics.
• Epoxy Curing Agent & Modifier: Acts as a curing agent or chain extender to enhance the thermal stability and mechanical strength of epoxy resin systems.
• Polyurethane & Polyurea Elastomers: Used as a chain extender to improve the heat resistance and durability of specialty elastomers for demanding applications.
• Liquid Crystal Polymers (LCPs): A key intermediate in the synthesis of aromatic LCPs for precision injection molding and high-barrier films.
• Specialty Adhesives and Coatings: Imparts superior adhesion and thermal performance in high-end industrial adhesives and protective coatings.
• Pharmaceutical Intermediate: Employed in the research and synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid Bis(4-Aminophenyl) Ester
CAS No.	16926-73-1
Molecular Formula	C20H16N2O4
Molecular Weight	348.35 g/mol
Synonyms	Bis(4-aminophenyl) terephthalate; Terephthalic acid bis(4-aminophenyl) ester; 4,4'-(Terephthaloyldioxy)dianiline; p,p'-Oxybis(aniline) terephthalate; DAT (Diamine Terephthalate); 1,4-Bis(4-aminophenoxycarbonyl)benzene; 4-Aminophenyl terephthalate
EINECS	Contact for details

Quality Control

Our 1,4-Benzenedicarboxylic Acid Bis(4-Aminophenyl) Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and consistent high-grade standards. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). The compound may be light-sensitive and should be kept in its original packaging or an amber container to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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