Amino Trimethylene Phosphonic Acid (ATMP) ,Cas: 6419-19-8 is a Water Treatment Chemicals that is commonly used as a scale and corrosion inhibitor. Amino Trimethylene Phosphonic Acid (ATMP) is effective in preventing the formation of scale deposits on metal surfaces and can also inhibit the corrosion of metals in water systems.Amino Trimethylene Phosphonic Acid (ATMP) is a Acid Corrosion Inhibitor and has a high thermal stability, making it suitable for use in high-temperature water systems.