124trimethylbenzene

1,2,4-Trimethylbenzene, also known as pseudocumene, is an organic compound with the chemical formula C9H12. It is one of three isomers of trimethylbenzene, the others being 1,3,5-trimethylbenzene (mesitylene) and 1,2,3-trimethylbenzene (hemimellitene). Pseudocumene is a colorless liquid with a sweet odor. It is flammable and has a relatively low boiling point.

This compound is found in coal tar and petroleum. It is a component of certain fuels and is produced industrially through the alkylation of toluene or xylene. Its primary use is as a precursor in the synthesis of trimellitic anhydride, which is used in the production of plasticizers, resins, and coatings. Pseudocumene can also be used as a solvent.

Exposure to 1,2,4-trimethylbenzene can occur through inhalation, skin contact, or ingestion. It can cause irritation to the eyes, skin, and respiratory tract. In higher concentrations, it may lead to central nervous system effects such as dizziness, headache, and nausea. Environmental concerns relate to its potential to contribute to air pollution as a volatile organic compound (VOC).