Methyl Methacrylate (MMA), identified by CAS number 80-62-6, is a clear, colorless, and volatile liquid organic compound. As the methyl ester of methacrylic acid, it serves as a critical monomer in the polymer industry. It is characterized by its distinct acrid odor and its ability to undergo rapid polymerization when exposed to light, heat, or free-radical initiators. Due to its reactive nature, commercial MMA is typically stabilized with inhibitors like hydroquinone to prevent premature polymerization during storage and transport.
This versatile building block is prized for its ability to form high-transparency polymers with excellent weatherability and mechanical strength. In industrial settings, handling MMA requires careful attention to its flammability and potential for skin sensitization. Despite these handling requirements, its role in modern material science is indispensable, providing the foundation for a vast array of resins, coatings, and structural components used across the automotive, construction, and electronics sectors.