Used primarily as a flame retardant in electrical and electronic equipment, plastics, and textiles due to its ability to inhibit combustion. Its bromine content helps suppress flame propagation by interfering with the radical reactions in the gas phase during burning. Historically added to polymers such as polyolefins and polystyrene to enhance fire resistance. However, due to environmental persistence, bioaccumulation concerns, and potential toxicity, its use has been largely phased out or restricted in many countries under regulations like the Stockholm Convention on Persistent Organic Pollutants.