4Methyl1phenylethene

4-Methyl-1-phenylethene, also known as 4-methylstyrene or p-methylstyrene, is an organic compound with the chemical formula C9H10. It is a derivative of styrene, where a methyl group is attached to the para position of the phenyl ring. This compound is a colorless liquid at room temperature with a characteristic aromatic odor. Its molecular structure consists of a vinyl group (ethene) attached to a toluene ring.

4-Methyl-1-phenylethene is primarily used as a monomer in the production of polymers. It can be polymerized through free-radical polymerization to form poly(4-methylstyrene), a polymer that shares some properties with polystyrene but can exhibit higher glass transition temperatures and improved thermal stability. It can also be used in copolymerization with other monomers to create materials with tailored properties. In addition to polymer applications, it can serve as an intermediate in the synthesis of other organic chemicals. Due to its reactive double bond and aromatic ring, it is susceptible to various chemical reactions.