mmethylstyrene

mmethylstyrene, commonly referred to as meta-methylstyrene or 3-methylstyrene, is an organic compound and one of three isomeric methylstyrenes derived from styrene. Its structure features a benzene ring bearing a vinyl group at one carbon and a methyl substituent at the meta position relative to the vinyl group.

Chemical formula: C9H10. In appearance it is typically a colorless liquid at room temperature, with physical properties similar to other alkyl-substituted styrenes. The vinyl functionality makes mmethylstyrene susceptible to radical polymerization, which underpins its use as a monomer in polymers.

Production and occurrence: mmethylstyrene is synthesized chemically and is not known to occur naturally in significant quantities. In many contexts it is generated as part of a mixture of the o-, m-, and p-methylstyrene isomers and is separated by distillation or chromatography as needed.

Applications: The principal use is as a chemical intermediate and as a monomer for polymerization to give poly(methylstyrene) and related copolymers. It also serves as a building block in organic synthesis for preparation of more complex aromatic compounds and specialty materials.

Safety and handling: mmethylstyrene is a flammable liquid and vapor can be irritating to mucous membranes and the respiratory tract. It should be handled in a well-ventilated area, with appropriate personal protective equipment, and stored away from heat, sparks, and oxidizers.

See also: o-methylstyrene, p-methylstyrene, styrene, poly(styrene).