Cumene hydroperoxide is primarily used as an initiator in the production of polymers, particularly in the polymerization of styrene to produce polystyrene and in the copolymerization of styrene and butadiene to produce synthetic rubber. Its ability to generate free radicals makes it essential in these processes, ensuring efficient and controlled polymerization reactions.

In the chemical industry, it serves as an intermediate in the synthesis of phenol and acetone through the cumene process. This process is crucial for producing these chemicals on an industrial scale, which are then used in the manufacture of plastics, resins, and other materials.

Additionally, cumene hydroperoxide is utilized in the formulation of certain adhesives and coatings, where it acts as a curing agent to improve the durability and performance of the final product. Its role in cross-linking reactions enhances the strength and stability of these materials.

In some specialized applications, it is also employed as an oxidizing agent in organic synthesis, facilitating the production of various chemical compounds. Its reactivity and efficiency make it a valuable component in these processes.