1,2,4-Trimethylbenzene

Asymmetrical trimethylbenzene, psi-Cumene, Hemimellitene [1,2,4-Trimethylbenzene], Pseudocumene [Note: Hemimellitene is a mixture of the 1,2,3-isomer with up to 10% of related aromatics such as the 1,2,4-isomer.]

C₆H₃(CH₃)₃

1 ppm = 4.92 mg/m³

N.D.
See: IDLH INDEX

Clear, colorless liquid with a distinctive, aromatic odor.

0.88

112°F

6.4%

0.9%

Oxidizers, nitric acid

irritation eyes, skin, nose, throat, respiratory system; bronchitis; hypochromic anemia; headache, drowsiness, lassitude (weakness, exhaustion), dizziness, nausea, incoordination; vomiting, confusion; chemical pneumonitis (aspiration liquid)