Used primarily in the production of high-performance polymers, particularly polyimides and polyamide-imides, which are known for their thermal stability, mechanical strength, and chemical resistance. These polymers are widely applied in the electronics industry for flexible printed circuits, insulating films, and coatings for wires. Additionally, it serves as a key intermediate in the synthesis of specialty chemicals, including adhesives and coatings that require durability under extreme conditions. Its role in creating advanced materials makes it valuable in aerospace, automotive, and industrial applications where high-temperature and high-stress environments are common.