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Authorities in Shenzhen tore up an athletics track last November after tests showed over 140 times permitted levels of the toxic chemical methylbenzene, according to the BBC citing the Beijing Bulletin.

Last November, authorities in Shenzhen tore up an athletics track after tests showed it contained more than 140 times the permitted level of methylbenzene, a toxic chemical, according to the Beijing Bulletin.

A similar contradiction apparently exists with regard to the specific volume, for while benzene has a specific volume corresponding to Claus’ formula, toluene, or methylbenzene, rather points to Kekul�’s.

An important oxidation synthesis of aromatic acids is from hydrocarbons with aliphatic side chains; thus toluene, or methylbenzene, yields benzoic acid, the xylenes, or dimethyl-benzene, yield methyl-benzoic acids and phthalic acids.