Methyl methacrylate is a colorless liquid, the methyl ester of methacrylic acid, and an important organic synthetic monomer, mainly used in the production of polymethyl methacrylate (PMMA), also known as organic glass. Methyl methacrylate (MMA) has a variety of uses and is particularly important in polymer manufacturing. It can be converted into polymethyl methacrylate (PMMA) through free radical polymerization, which is a transparent thermoplastic material widely used in optics, lighting, construction, and automobiles. Due to its excellent optical properties and processing properties, PMMA is often used as a substitute for plastic glass.