Used primarily as a heat transfer fluid in industrial systems due to its high thermal stability and low vapor pressure. Commonly found in molten salt mixtures for solar thermal energy storage and high-temperature heating applications. Also serves as a solvent and carrier in dye and polymer processing. In some cases, it is utilized as a scintillator in radiation detection devices, where it helps convert ionizing radiation into detectable light signals. Its stability under prolonged heating makes it suitable for use in sealed heating systems and laboratory equipment.