Description

4,4'-Methylenedianiline is a primary aromatic amine and a key chemical intermediate with a rigid, symmetrical structure. Its primary commercial value lies in its role as a fundamental building block for high-performance polymers, particularly polyurethane elastomers and epoxy resin curing agents. This compound is essential for manufacturers in the polymer, coatings, and advanced materials industries seeking to produce durable, heat-resistant, and chemically stable end products.

Application

• Polyurethane Manufacturing: Serves as a chain extender and curing agent in the production of high-performance elastomers, fibers, and coatings.
• Epoxy Resin Systems: Acts as a curing agent/hardener for epoxy resins used in composites, adhesives, and electrical laminates.
• Polyimide Synthesis: A key monomer for producing high-temperature resistant polyimide films and resins.
• Azo Dye & Pigment Intermediate: Used in the synthesis of certain dyes and pigments.
• Rubber Chemicals: Employed as an antioxidant and antiozonant precursor in the rubber industry.
• Research & Development: Utilized in organic synthesis and material science research for developing novel polymers.

Basic Information

Product Name	4,4'-Methylenedianiline
CAS No.	101-77-9
Molecular Formula	C13H14N2
Molecular Weight	198.26 g/mol
Synonyms	MDA; 4,4'-Diaminodiphenylmethane; DDM; Methylenebis(4-aminobenzene); Bis(4-aminophenyl)methane; 4,4'-Methylenebisaniline; p,p'-Methylenedianiline; Tonox
EINECS	202-974-4

Quality Control

Our 4,4'-Methylenedianiline is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including chromatography and spectroscopy, to confirm identity and meet specified impurity profiles. A Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized (store under inert atmosphere) and is light-sensitive. Keep away from strong oxidizing agents, acids, and moisture. Observe all local regulations for the storage of amine compounds.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder or flakes
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	88°C - 92°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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