Used primarily as a key intermediate in the synthesis of high-performance polymers, particularly polycarbonates and polyesters. These polymers are valued for their excellent thermal stability, flame retardancy, and mechanical strength, making them suitable for use in electronics, automotive components, and construction materials. Additionally, it serves as a building block in the production of advanced materials for coatings and adhesives, where enhanced durability and resistance to harsh environments are required. Its role in creating halogenated flame retardants also contributes to improving fire safety in various industrial and consumer products.