Biphenyl is a specialty chemical widely used in various industrial applications due to its unique chemical properties, including high thermal stability and low reactivity. It serves as a heat transfer fluid in high-temperature processes, such as in chemical reactors and solar thermal systems, particularly in industries requiring stable thermal management. Additionally, it is utilized as a dye carrier in textile manufacturing, helping to evenly distribute dyes on fabrics for improved color fastness. Biphenyl also finds application in the production of plastics and resins, where it acts as a plasticizer or monomer precursor to enhance flexibility, durability, and processability. In the field of organic synthesis, it is employed as an intermediate in the manufacture of pharmaceuticals, agrochemicals, and other complex organic compounds. Furthermore, biphenyl is used in the formulation of certain pesticides and as a post-harvest fungicide for citrus fruits to prevent mold growth. In the electronics industry, it functions as an electrical insulator in transformers, capacitors, and impregnating compounds due to its excellent dielectric properties and heat resistance. Its chemical stability and versatility make it a valuable component in diverse industrial processes.