This arene, also known as pseudocumene, presents as a colorless to almost colorless, aromatic liquid. It is known to be miscible in ether, benzene and ethanol. Store in a cool, dark and well-ventilated place. 1,2,4-Trimethylbenzene is incompatible with oxidizing agents and should not be stored or handled near them. This flammable liquid/vapor is harmful if inhaled, causes skin irritation, and causes serious eye irritation. It may be fatal if swallowed and enters airways and is toxic to aquatic life with long lasting effects. It may also cause respiratory irritation, drowsiness, dizziness, or damage to the central nervous system and lungs.