Description

5,5'-Methylenebis(1,3-Phenylenediamine) is a high-purity aromatic diamine monomer, also known as MPD, which serves as a critical building block in advanced polymer synthesis. Its molecular structure, featuring two primary amine groups on aromatic rings linked by a methylene bridge, provides excellent thermal stability and reactivity for creating high-performance materials. This compound is essential for manufacturers in the epoxy resin, polyimide, and specialty coatings industries seeking to enhance the mechanical and thermal properties of their final products.

Application

• Epoxy Curing Agent & Hardener: A key component for formulating high-performance epoxy resin systems used in aerospace composites, electronic encapsulants, and industrial adhesives.
• Polyimide Synthesis: Serves as a vital diamine monomer in the production of polyimide films and resins, which are used for flexible printed circuits (FPCs), high-temperature insulation, and advanced membranes.
• Corrosion-Resistant Coatings: Used in the formulation of specialized industrial and marine coatings that require exceptional chemical resistance and durability.
• Advanced Composite Materials: Incorporated into the polymer matrix of carbon fiber and fiberglass composites for automotive, wind energy, and sporting goods applications.
• Chemical Intermediate: Employed in organic synthesis for pharmaceuticals, agrochemicals, and dyes, where its aromatic diamine functionality is utilized.
• Adhesives and Sealants: Enhances the performance of high-strength, temperature-resistant structural adhesives used in demanding environments.

Basic Information

Product Name	5,5'-Methylenebis(1,3-Phenylenediamine)
CAS No.	70703-38-7
Molecular Formula	C13H14N4
Molecular Weight	226.28 g/mol
Synonyms	MPD; 5,5'-Methylenebis(m-phenylenediamine); 1,3-Bis(3-aminobenzyl)benzene; 3,3'-Methylenedi-1,3-phenylenediamine; Methylenebis(1,3-phenylenediamine); Bis(3-aminophenyl)methane; 3,3'-Diaminodiphenylmethane derivative; Methylene-bis(meta-phenylenediamine)
EINECS	Contact for details

Quality Control

Our production of 5,5'-Methylenebis(1,3-Phenylenediamine) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC, GC, and FTIR to verify identity, potency, and impurity profiles. Certificates of Analysis (COA) documenting all critical specifications are provided and can be tailored to meet specific customer or regulatory requirements.

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 heat, open flames, and incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, the container should be opaque or stored in darkness.

Specification

Item	Specification
Appearance	Light yellow to brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Contact for details

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