Product Introduction: 4,4′-Methylenedianiline (MDA)

CAS No. : 101-77-9
Synonyms : Curithane, 4,4'-Diaminodiphenylmethane, MDA, bis(4-aminophenyl)methane, Tonox R, Di(4-aminophenyl)methane

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Overview

4,4′-Methylenedianiline (MDA) is a versatile organic compound widely used in the chemical industry, particularly for its exceptional properties as a hardener in epoxy formulations and its role as a precursor in the synthesis of various polyurethanes and epoxy resins. Known for its structural integrity and thermal stability, MDA is essential in manufacturing durable applications ranging from automotive parts to construction materials.

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Chemical Properties

- Molecular Formula : C13H12N2
- Molecular Weight : 212.25 g/mol
- Appearance : White crystalline solid
- Melting Point : Approximately 100-102°C
- Boiling Point : 360°C
- Solubility : Soluble in organic solvents such as ether and acetone

MDA exhibits strong mechanical properties and excellent adhesion, making it a popular choice in formulations that require longevity and resilience.

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Applications

4,4′-Methylenedianiline finds extensive use in various fields, including:

- Epoxy Resins : MDA serves as a hardener for epoxy systems, enhancing durability and resistance to chemicals. Its applications range from adhesives, coatings, to automotive and industrial components.

- Polyurethane Production : This compound is pivotal in manufacturing polyurethanes used in insulation, cushioning materials, and elastomers, where flexibility and strength are paramount.

- Industrial Coatings : The ability of MDA to enhance the toughness and chemical resistance of coatings makes it an essential ingredient in protective and decorative applications.

- Composite Materials : MDA contributes to the reinforcement of composite structures, joining fibers and fillers with a solid matrix that improves overall performance.

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Quality Standards

To guarantee optimal performance, 4,4′-Methylenedianiline must meet stringent quality standards. The substance is produced under rigorous conditions adhering to international regulations. Common specifications include:

- Purity : Minimum 98%
- Heavy metal content : Conformance with industry standards for safety
- Water content : Limited to ensure stability during storage and usage

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Synthesis Route

The synthesis of 4,4′-Methylenedianiline involves the reaction of aniline with formaldehyde, where optimal conditions can yield high-purity MDA. This process requires careful temperature and pH control to prevent unwanted by-products and ensure efficient production. The product is then purified through recrystallization or distillation to meet industry standards.

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Conclusion

4,4′-Methylenedianiline is a key compound in the modern materials industry, thanks to its unique blend of properties and diverse applications. Whether utilized in epoxies, polyurethanes, or advanced composites, MDA remains at the forefront of innovation, driven by its ability to enhance product performance and durability. Ningbo Inno Pharmchem is committed to producing high-quality 4,4′-Methylenedianiline, ensuring our customers have access to premium materials that can meet their evolving needs.

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