o-Xylylenediphosphonic acid is primarily used as a corrosion inhibitor in various industrial applications, including water treatment systems, cooling towers, boilers, and oil and gas pipelines. It forms a protective layer on metal surfaces to prevent corrosion and chelates metal ions to inhibit scale formation. Additionally, it is utilized in the formulation of detergents and cleaning agents to improve efficiency by preventing scale and enhancing cleaning performance. In the paper industry, it helps improve production processes by reducing deposits and dirt accumulation on machinery. Its stability under high temperatures and pressures makes it suitable for demanding environments.