This standard specifies the requirements, inspection rules, packaging, marking, transportation and storage, and safety of 1, 2, 4-trimethylbenzene (trimethylbenzene). This standard applies to 1,2,4-trimethylbenzene produced from reformed heavy aromatics as raw material. This product is used as a chemical raw material. Molecular formula: CH. Relative molecular mass: 120.19 (according to the 2007 international relative atomic mass).