Used as a corrosion inhibitor in industrial water treatment systems, particularly in cooling water and heating systems where it protects copper and copper alloy surfaces. It forms a protective film on metal surfaces, preventing oxidation and degradation caused by water and dissolved oxygen. Commonly applied in HVAC systems, automotive antifreeze formulations, and metalworking fluids. Also utilized in some polymer stabilization processes and as an additive in lubricants to enhance metal protection. Its effectiveness in low concentrations makes it suitable for closed-loop systems where long-term stability is required.