Used as a catalyst in organic synthesis, particularly in Friedel-Crafts reactions and other Lewis acid-mediated transformations. It facilitates the formation of carbon-carbon bonds in alkylation and acylation processes. Also employed in the semiconductor industry for the production of gallium-containing compounds like gallium arsenide through metalorganic vapor phase deposition. Its ability to act as a strong Lewis acid makes it valuable in polymerization reactions and in the synthesis of fine chemicals and pharmaceuticals.