The study has been extended to other aromatic hydrocarbons such as toluene, p- toluic acid and ethyl benzene.
The p-xylene is oxidized by air to p-toluic acid, which is subsequently esterified to methyl p-toluate.
British Dictionary definitions for toluic acid
a white crystalline derivative of toluene existing in three isomeric forms; methylbenzoic acid. The ortho- and para- isomers are used in synthetic resins and the meta- isomer is used as an insect repellent. Formula: C6H4CH3COOH