styrene (C6H5CH=CH2)

Ball-and-stick model of the styrene monomer

Ball-and-stick model of the styrene monomer.

Styrene, also known as vinylbenzene, is a colorless, oily, toxic, liquid hydrocarbon, important as a monomer (building block) of polystyrene. It is also a monomer of styrene-butadiene rubber (SBR), the artificial rubber most commonly used in pneumatic tires. Styrene, a derivative of benzene, is found in coal tar and essential oils.


molecular weight 104.2
melting point -30.0°C (243.15°F)
boiling point 145.2°C (293.4°F)