C6H4CH32

C6H4CH32 is a condensed structural formula that denotes dimethylbenzene, commonly known as xylene. In usual chemical usage, it refers to a family of aromatic hydrocarbons in which two methyl groups are attached to a benzene ring. The overall molecular formula for these compounds is C8H10, with C6H4CH32 serving as a way to emphasize the benzene ring bearing two methyl substituents.

There are three isomers of xylene: ortho-xylene (1,2-dimethylbenzene), meta-xylene (1,3-dimethylbenzene), and para-xylene (1,4-dimethylbenzene). They share similar chemical properties and industrial relevance, and in many applications they are handled as a mixture known as mixed xylenes.

Production and uses: Xylenes are produced during petroleum refining and coal tar processing. They are separated by distillation and are widely used as solvents in paints, coatings, inks, and rubber processing. Para-xylene is a major feedstock for the production of terephthalic acid, which is then used to make polyethylene terephthalate (PET).

Safety and environmental: Xylene is a flammable, volatile liquid with a characteristic sweet odor. It is sparingly soluble in water and can irritate the skin, eyes, and respiratory tract; prolonged or repeated exposure may affect the nervous system. It should be stored away from heat sources in a well-ventilated area, and spills should be contained and cleaned up promptly. Environmental concerns include potential toxicity to aquatic life if released in sufficient quantities.