Used as a strong oxidizing agent in polymerization reactions, especially in the production of synthetic rubbers and plastics. Commonly applied in etching copper for printed circuit boards due to its ability to oxidize metal surfaces. Employed in hair bleaching and cosmetic formulations for its bleaching properties. Utilized in environmental testing to digest organic matter in water samples for COD (chemical oxygen demand) analysis. Also serves as a radical initiator in emulsion polymerization processes, such as in the manufacture of adhesives and coatings.