Dimethylbenzene is the product of two hydrogens substituted by methyl in the benzene ring. There are three isomers, O, M, and P. Industry, xylene is the mixture of the above isomers. Character: Colorless transparent liquid with a special aromatic hydrocarbon odor. Uses and functions: It is widely used as solvents in coatings, resins, dyes, inks, and other industries; as synthetic monomers or solvents in pharmaceutical, explosives, pesticides, and other industries; as a component of gasoline with high octane numbers, it is is an important raw material for the organic chemical industry.