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CAS number 95-63-6 YesY
ChemSpider 6977 YesY
KEGG C14533 YesY
ChEBI CHEBI:34039 YesY
Jmol-3D images Image 1
Molecular formula C9H12
Molar mass 120.19 g/mol
Density 0.8761 g/cm³
Melting point

-43.78 °C

Boiling point

169-171 °C

MSDS Sigma-Aldrich MSDS
EU classification Harmful (Xn); Dangerous for the environment (N)
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

1,2,4-Trimethylbenzene is a colorless liquid with chemical formula C9H12. It is a flammable aromatic hydrocarbon with a strong odor. It occurs naturally in coal tar and petroleum (about 3%). It is nearly insoluble in water, but well-soluble in ethanol, diethyl ether, and benzene.

Industrially, it is isolated from the C9 aromatic hydrocarbon fraction during petroleum distillation. Approximately 40% of this fraction is 1,2,4-trimethylbenzene.


1,2,4-Trimethylbenzene dissolved in mineral oil is used as a liquid scintillator. 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.[2]


External links

  • EPA Chemical Fact Sheet
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