p-Terphenyl is widely used as a scintillator in radiation detection applications. It is particularly effective in detecting gamma rays and beta particles due to its ability to emit light when exposed to ionizing radiation. This property makes it valuable in nuclear physics experiments, medical imaging devices, and radiation monitoring equipment. Additionally, p-Terphenyl is employed in organic light-emitting diodes (OLEDs) as a host material, enhancing the efficiency and stability of the light-emitting layers. Its thermal stability also makes it suitable for use in high-temperature environments, such as in heat transfer fluids and as a component in lubricants. Furthermore, it is utilized in the synthesis of more complex organic compounds, serving as an intermediate in various chemical reactions.