Used primarily in the production of styrene, which is a key monomer for manufacturing polystyrene plastics and resins. It serves as a raw material in petrochemical industries due to its role in catalytic processes for styrene synthesis. Also functions as a solvent in some industrial applications and is found in small amounts in gasoline, contributing to octane rating. Its volatility and solvency make it useful in paints, varnishes, and adhesives, though its use is limited due to health and environmental concerns.