Boron trichloride is widely used in the chemical industry as a catalyst in various organic synthesis reactions, particularly in the production of pharmaceuticals and fine chemicals. It is also employed in the purification of aluminum, magnesium, and copper alloys by removing nitrides, carbides, and oxides during metal refining processes. In the electronics industry, it serves as a dopant gas in the production of semiconductors, helping to modify the electrical properties of silicon and other materials. Additionally, boron trichloride is utilized in the synthesis of boron-containing compounds, such as boron fibers and ceramics, which are valued for their high strength and thermal stability. Its role in the creation of specialty chemicals and advanced materials makes it a crucial component in modern industrial applications.