4,4'-Methylenedianiline
- CAS No.101-77-9
- GradeIndustrial / Pharmaceutical
- Availability● In Stock
High-purity 4,4'-Methylenedianiline (≥98%) is a key aromatic diamine intermediate for polyurethane, diisocyanate, and high-performance polymer synthesis.
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Product Overview
4,4'-Methylenedianiline (MDA), chemically designated as 4,4'-diaminodiphenylmethane, is a vital aromatic diamine widely employed as a building block in advanced polymer chemistry. With a molecular formula of C₁₃H₁₄N₂ and a molecular weight of 198.26 g/mol, this compound appears as white to light yellow crystalline solid and is typically supplied with a minimum assay purity of 98%. Its well-defined melting point range of 89–91°C ensures consistent performance in industrial-scale reactions.
Specifications
| Molecular Formula | C₁₃H₁₄N₂ |
|---|---|
| Molecular Weight | 198.26 g/mol |
| Appearance | White to light yellow crystal |
| Assay (Purity) | ≥98% |
| Melting Point | 89–91°C |
| Packaging | 25 kg per compound paper bag |
Industrial Applications
As a foundational intermediate in specialty chemical manufacturing, 4,4'-Methylenedianiline serves as a critical monomer in the production of methylene diphenyl diisocyanate (MDI)—a cornerstone component in polyurethane systems. Beyond polyurethanes, MDA is extensively utilized in the synthesis of high-temperature-resistant polymers, aerospace coatings, and engineering-grade polyamides. Additional applications include its role as a chain extender in insulating laminated composites and as an antioxidant in synthetic rubbers such as chloroprene, butyl, and styrene-butadiene rubber (SBR). Its structural rigidity and bifunctional amine reactivity make it indispensable in formulating heat-stable elastomers and corrosion-inhibiting additives.
Our facility maintains rigorous quality control protocols aligned with international standards, supporting an annual production capacity of 8,000 metric tons across phosphate flame retardants, plasticizers, stabilizers, and polyurethane curing agents—including high-purity diamine intermediates like MDA.
