Used as an oxidizing agent in organic synthesis, particularly in epoxidation of alkenes and oxidation of sulfides to sulfoxides or sulfones. Commonly employed in radical-initiated reactions due to its ability to generate free radicals under thermal or metal-catalyzed conditions. Serves as a polymerization initiator in the production of plastics and elastomers. Applied in the synthesis of fine chemicals and pharmaceuticals where controlled oxidation is required. Also utilized in industrial bleaching processes and as a reagent in analytical chemistry for detecting certain metal ions. Requires careful handling due to its reactive and potentially explosive nature, especially when concentrated or exposed to heat or contaminants.