Product Introduction
4,4′-Methylenedianiline (CAS 101-77-9), commonly known as MDA or 4,4′-Diaminodiphenylmethane, is an aromatic amine with the molecular formula C13H14N2. It appears as white to pale yellow flakes or crystalline powder. MDA is a critical industrial building block, primarily used in the synthesis of diisocyanates and as a high-performance cross-linking agent. Its structural rigidity and reactive amine groups make it indispensable for producing materials with high thermal stability and mechanical strength.
Product Selling Points
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High Purity (≥ 99.5%): Chemfine ensures low levels of ortho-isomers and trace metals, providing a clean start for polymerization.
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Excellent Thermal Stability: Ideal for producing resins and polymers that must withstand high-temperature environments.
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Controlled Particle Size: Available in flake or powder form to suit specific industrial dissolution or melting processes.
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Consistent Amine Value: Strictly monitored to ensure accurate stoichiometric ratios in epoxy and polyurethane formulations.
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Versatile Hardener: Provides superior chemical resistance and mechanical properties to epoxy resin systems.
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Reliable Global Supply: Supported by comprehensive safety data and hazardous material handling expertise.
Applications
MDI Production The primary raw material for the production of 4,4′-Methylenediphenyl diisocyanate (MDI), which is used to manufacture rigid and flexible polyurethane foams, elastomers, and coatings.
Epoxy Curing Agent Functions as a high-temperature hardener for epoxy resins used in heavy-duty coatings, structural adhesives, and glass-fiber reinforced laminates (FR-4).
High-Performance Polymers Used in the synthesis of polyimides, polyamidimides, and specialized fibers that require exceptional heat and chemical resistance.
Rubber Chemicals Acts as an antioxidant and curative agent in the processing of specialized rubber and elastomer products.
Dyestuffs and Pigments Serves as an intermediate in the manufacture of various aromatic dyes and organic pigments.
Packaging
Standard industrial packaging options for 4,4′-Methylenedianiline include:
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25kg or 50kg fiber drums with double-layer PE moisture-proof inner bags.
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500kg or 1000kg super sacks (Jumbo bags) for large-scale MDI or resin production.
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Custom packaging available upon request for pilot-scale R&D.
Storage
4,4′-Methylenedianiline is light-sensitive and classified as a hazardous substance. It must be stored in a cool, dry, and dark warehouse. Keep containers tightly sealed to prevent oxidation (which causes the product to turn brown). Store away from strong oxidizing agents, acids, and food products. Ensure proper ventilation and use appropriate PPE during handling. Properly stored, it has a shelf life of 24 months.
