M-xylene is an aromatic hydrocarbon, based on benzene with two methyl substituents. It is an isomer of o-xylene and p-xylene. The m stands for meta, meaning the two methyl substituents are at locants 1 and 3 on the aromatic ring.
It is mixture of ortho,para.& meta Xylene, xylol or dimethylbenzene, C6H4(CH3)2 is the one which is derived from benzene. Según la posición relativa de los grupos metilo en el anillo bencénico, se diferencia entre orto-, meta-, o para- xileno (o con sus nombres sistemáticos 1,2-; 1,3-; y 1,4-dimetilbenceno). According to the relative position of methyl groups in the benzene ring, differs between ortho-, meta-or para-xylene (or their systematic names 1,2 -, 1,3 - and 1,4-dimethylbenzene).
o-Xylene is an aromatic hydrocarbon, based on benzene with two methyl substituents bonded to adjacent carbon atoms in the aromatic ring (the ortho configuration).
p-Xylene is an aromatic hydrocarbon, based on benzene with two methyl substituents. The “p” stands for para, identifying the location of the methyl groups as across from one another.It is an isomer of xylene. Other isomers include o-xylene and m-xylene. p-Xylene is used on a large scale for the manufacture of terephthalic acid for polyester. Its polymer is known as Parylene. p-Xylene is produced by catalytic reforming and separated in a series of distillation and reaction processes from m-xylene, o-xylene and ethylbenzene.