Description

4,4'-Ethylenedianiline CAS NO 621-95-4 is a high-purity aromatic diamine compound, serving as a critical building block in advanced polymer synthesis. Its bifunctional structure, featuring two primary amine groups, makes it an essential monomer for producing high-performance materials with superior thermal and mechanical properties. This product is indispensable for manufacturers in the polymer, epoxy resin, and specialty chemical industries seeking reliable and consistent raw material quality.

Application

• Polymer Synthesis: A key monomer for the production of polyimides, polyamides, and other high-temperature resistant polymers.
• Epoxy Curing Agent: Used as a curing agent or hardener in epoxy resin systems, contributing to enhanced cross-linking density and thermal stability.
• Chemical Intermediate: Serves as a versatile precursor in the synthesis of dyes, pigments, and other specialty organic compounds.
• Adhesives and Coatings: Imparts durability and chemical resistance in high-performance industrial adhesives and protective coatings.
• Composite Materials: Employed in the manufacture of fiber-reinforced composites for aerospace and automotive applications.
• Research & Development: Utilized in academic and industrial R&D for developing novel polymeric materials and studying reaction mechanisms.

Basic Information

Product Name	4,4'-Ethylenedianiline
CAS No.	621-95-4
Molecular Formula	C14H16N2
Molecular Weight	212.29 g/mol
Synonyms	4,4'-Diaminodiphenylmethane; DDM; Methylenedianiline; Bis(4-aminophenyl)methane; 4,4'-Methylenedianiline; MDA; p,p'-Methylenedianiline; 4,4'-Diaminodiphenylmethane
EINECS	210-719-2

Quality Control

Our 4,4'-Ethylenedianiline is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and physical characterization, to meet exacting customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, acids, and moisture. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque containers until use.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	90°C - 94°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%

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