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Xylene is a clear and colorless liquid consisting of two methyl groups attached to a benzene ring. It is volatile and has a distinctive smell. Depending on the position of the methyl component, xylene has three isomers: ortho-, meta- and para-xylene. The industry term for the three as well as ethylbenzene is mixed xylene.
Xylenes are produced with different processes. When in refineries, oil cuts enter the reforming units, aromatic compounds comprise a great proportion of the outflow material. Separating this flow into its components accounts for more than 70 percent of global xylene supply. Also, in the steam cracking process in olefin units, some quantity of Mixed Xylene is produced. In addition, disproportioning toluene into benzene and xylene and treating pyrolysis gasoline are also different ways to produce mixed xylene.
Mixed xylenes are the second-most-important aromatic product in terms of world consumption for chemical manufacture.
