1,5-Pentylenediphosphonic acid is primarily used as a chelating agent in various industrial applications. It effectively binds to metal ions, making it valuable in water treatment processes to prevent scale formation and corrosion in boilers and cooling systems. In the oil and gas industry, it is employed to inhibit the deposition of mineral scales in pipelines and equipment, ensuring efficient operations. Additionally, it finds use in cleaning formulations, particularly for removing hard water stains and metal deposits from surfaces. Its ability to stabilize metal ions also makes it useful in the formulation of detergents and personal care products, enhancing their performance in hard water conditions.