Biphenyl is widely used as an intermediate in the production of various industrial chemicals, including plastics, dyes, and pharmaceuticals. It serves as a heat transfer fluid in industrial processes due to its thermal stability. In the electronics industry, it is utilized in the synthesis of organic semiconductors and as a component in liquid crystal displays (LCDs). Additionally, biphenyl acts as a fungicide in citrus fruit packaging to prevent spoilage during storage and transport. Its derivatives are also employed in the manufacture of flame retardants and as precursors for other organic compounds.