Used primarily as an accelerator in free-radical polymerization reactions, especially in unsaturated polyester resin systems. It enables rapid curing at room temperature when combined with organic peroxides like methyl ethyl ketone peroxide (MEKP). Commonly found in fiberglass-reinforced plastics, marine coatings, automotive repair compounds, and casting resins. Also serves as a catalyst in dental prosthetics and adhesives where fast setting is required. Its effectiveness in low-temperature curing makes it valuable in industrial repair and construction applications.