# What is the most common use of styrene, C_6H_5CH=CH_2?

Phenylethene, styrene, ${C}_{6} {H}_{5} C H = C {H}_{2}$, is most widely used as a precursor to packaging material, i.e. polystyrene: the clamshell containers your hamburgers come in; pellets for packaging; and also laboratory equipment. This material is so ubiquitous that it poses a huge environmental problem.