Widely used as a corrosion inhibitor, especially in cooling systems and antifreeze formulations, protecting copper and its alloys from degradation. It forms a protective film on metal surfaces, preventing oxidation and minimizing metal ion leaching. Commonly added to hydraulic fluids, lubricants, and metalworking fluids to enhance equipment longevity. Also serves as an ultraviolet (UV) light absorber in plastics, coatings, and adhesives, improving material stability and reducing photodegradation. Frequently employed in water treatment processes to control metal corrosion in industrial systems. Additionally, used as a chemical intermediate in synthesis of dyes, pharmaceuticals, and agrochemicals due to its stable heterocyclic structure.