Ethylbenzene solution is primarily used in the production of styrene, a key monomer for manufacturing polystyrene plastics, synthetic rubber, and resins. It serves as a solvent in various industrial processes, including coatings, adhesives, and inks, due to its effective dissolving properties. Additionally, it is utilized as an intermediate in the synthesis of other chemicals, such as acetophenone and ethyl anthraquinone. In the petroleum industry, it is sometimes blended into fuels to enhance octane ratings. Its applications also extend to research laboratories as a reagent or solvent in organic synthesis and chemical reactions.