1,2,4-Trimethylbenzene

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1,2,4-Trimethylbenzene

IUPAC name	1,2,4-Trimethylbenzene
Other names	Pseudocumene, Asymmetrical trimethylbenzene, psi-cumene
Identifiers
CAS number	[95-63-6]
SMILES	CC1=C(C)C=CC(C)=C1
Properties
Molecular formula	C₉H₁₂
Molar mass	120.19 g/mol
Density	0.8761 g/cm³
Melting point	-43.78 °C
Boiling point	169-171 °C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

1,2,4-Trimethylbenzene is a colorless liquid with chemical formula C₉H₁₂. It is 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.

[edit] Uses

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.^[1]