Ortho Xylene

o-Xylene (ortho-xylene) is an aromatic hydrocarbon with the formula C6H4(CH3)2. with two methyl substituents bonded to adjacent carbon atoms of a benzene ring (the orthoconfiguration). It is a constitutional isomer of m-xylene and p-xylene, the mixture being called xylene or xylenes. o-Xylene is a colorless slightly oily flammable liquid.   o-Xylene is largely used in the production of phthalic anhydride, which is a precursor to many materials, drugs, and other chemicals