|Molar mass||120.19 g/mol|
|Melting point||−43.78 °C (−46.80 °F; 229.37 K)|
|Boiling point||169 to 171 °C (336 to 340 °F; 442 to 444 K)|
|EU classification||Harmful (Xn); Dangerous for the environment (N)|
|Flash point||44.4 °C (111.9 °F; 317.5 K)|
|US health exposure limits (NIOSH):|
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
|what is: / ?)(|
1,2,4-Trimethylbenzene is an organic compound with the chemical formula C6H3(CH3)3. Classified as an aromatic hydrocarbon, it is a flammable colorless liquid with a strong odor. It is nearly insoluble in water but soluble in organic solvents. It occurs naturally in coal tar and petroleum (about 3%).
Industrially, it is isolated from the C9 aromatic hydrocarbon fraction during petroleum distillation. Approximately 40% of this fraction is 1,2,4-trimethylbenzene. It is also generated by methylation of toluene and xylenes and the disproportionation of xylene over aluminosilicate catalysts.
Pseudocumene is a precursor to mellitic anhydride, from which high performance polymers are made. It is also used as a sterilizing agent and in the manufacture of dyes, perfumes, and resins. Another major use is as a gasoline additive.
- Merck Index, 11th Edition, 7929
- "NIOSH Pocket Guide to Chemical Hazards #0638". National Institute for Occupational Safety and Health (NIOSH).
- Karl Griesbaum, Arno Behr, Dieter Biedenkapp, Heinz-Werner Voges, Dorothea Garbe, Christian Paetz, Gerd Collin, Dieter Mayer, Hartmut Höke "Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry 2002 Wiley-VCH, Weinheim. doi:10.1002/14356007.a13_227
- "Chemical Summary for 1,2,4-Trimethylbenzene" (TEXT). United States Environmental Protection Agency. 1994-08-01. Retrieved 2008-01-28.