Description

4,4'-Diamino-3,3'-Dimethyldiphenylmethane is a high-purity aromatic diamine monomer, also known as methylene-bis(2,6-dimethylaniline). This compound is a critical building block in polymer chemistry, valued for its role in creating high-performance materials with enhanced thermal and mechanical properties. It is primarily sought after by manufacturers in the polymer and specialty chemical industries for producing advanced polyurethanes, epoxy curing agents, and high-temperature resistant polymers.

Application

• Epoxy Curing Agent: Used as a curing agent or hardener for epoxy resin systems, imparting excellent chemical resistance and thermal stability to the final cured product.
• Polyurethane Intermediate: Serves as a chain extender or cross-linking agent in the synthesis of polyurethane elastomers, foams, and coatings, improving their mechanical strength and durability.
• High-Performance Polymer Synthesis: A key monomer for the production of polyimides, polyamides, and other engineering plastics that require high thermal stability and robust mechanical properties.
• Chemical Intermediate: Utilized in organic synthesis for the preparation of dyes, pigments, and other specialty chemicals where its diamine functionality is essential.
• Composite Materials: Incorporated into advanced composite matrices for aerospace, automotive, and electrical insulation applications.

Basic Information

Product Name	4,4'-Diamino-3,3'-Dimethyldiphenylmethane
CAS No.	838-88-0
Molecular Formula	C₁₇H₂₂N₂
Molecular Weight	254.37 g/mol
Synonyms	3,3'-Dimethyl-4,4'-diaminodiphenylmethane; Methylene-bis(2,6-dimethylaniline); 2,2'-Dimethylbenzidine; DADM; MBDA; 4,4'-Methylenebis(2,6-dimethylaniline); Bis(2,6-dimethyl-4-aminophenyl)methane; 2,6-Dimethyl-4,4'-methylenedianiline
EINECS	212-658-0

Quality Control

Our 4,4'-Diamino-3,3'-Dimethyldiphenylmethane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and compliance with your quality requirements.

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 light-sensitive and easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen) to maintain optimal purity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Melting Point	158 - 162 °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.