Ammonium persulfate is a widely used free-radical initiator in emulsion and solution polymerization. It plays a critical role in the manufacture of acrylic polymers, latexes, and specialty resins. The compound dissolves readily in water and enables efficient initiation under controlled conditions. Additional applications include surface treatment and chemical processing. Its reliability and cost efficiency make it a standard material in industrial chemistry. For application guidance or commercial terms, direct contact is recommended.