Used primarily in industrial applications, this chemical serves as a flame retardant and insulating fluid in electrical equipment like transformers and capacitors. It also acts as a plasticizer in certain polymers, enhancing flexibility and durability. Due to its stability, it has been utilized in heat transfer systems and hydraulic fluids. However, its use has declined significantly because of environmental and health concerns, as it is persistent and bioaccumulative. Strict regulations now limit its production and application.