Description

4,4'-Ddm is a high-purity aromatic diamine compound, also known as 4,4'-Diaminodiphenylmethane. This versatile chemical intermediate is valued for its role in synthesizing high-performance polymers and advanced materials. It is essential for manufacturers in the polymer, epoxy resin, and specialty chemical industries seeking reliable raw materials for production.

Application

• Epoxy Curing Agent: A primary hardener for epoxy resin systems in coatings, adhesives, and composites.
• Polyurethane Precursor: Used in the synthesis of polyurethane elastomers and foams.
• Polyimide Production: Serves as a monomer for high-temperature resistant polyimide films and fibers.
• Rubber Chemicals: Acts as an antioxidant and antiozonant in rubber compounding.
• Dye Intermediate: A key building block in the manufacture of certain azo dyes and pigments.
• Pharmaceutical Synthesis: Employed as an intermediate in the production of specific active pharmaceutical ingredients (APIs).
• Ion-Exchange Resins: Used in the synthesis of resins for water treatment and purification.

Basic Information

Product Name	4,4'-Ddm
CAS No.	101-76-8
Molecular Formula	C13H14N2
Molecular Weight	198.26 g/mol
Synonyms	4,4'-Diaminodiphenylmethane; DDM; Methylenedianiline; Bis(4-aminophenyl)methane; 4,4'-Methylenedianiline; MDA; p,p'-Methylenedianiline; Tonox
EINECS	202-974-4

Quality Control

Our 4,4'-Ddm is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profile, and physical property verification, to ensure it meets exacting standards. A Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and compliance with your specifications.

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; prolonged exposure to air and light should be avoided to maintain purity and stability.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder or flakes
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	90 - 93 °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.