Sodium aminotris(methylenephosphonate)

Sodium aminotris(methylenephosphonate) (CAS 20592-85-2), commercially known as ATMP-4Na, is a phosphonate-based chelating agent used in industrial water systems and process chemistry.

Where is Sodium aminotris(methylenephosphonate) used?

• Water treatment: dosed into cooling towers, boilers, and reverse osmosis systems to prevent carbonate and sulfate scale on heat exchange surfaces and membranes
• Oil and gas: protects downhole equipment and surface pipelines from mineral scaling in injection and produced water circuits
• Textile and paper: deactivates hardness ions in process baths
• Construction chemicals: retarder and stabilizer in cement and gypsum systems
• It controls scale deposition and inhibits corrosion by sequestering calcium, magnesium, and heavy metal ions.

Commercial specifications

• Active content typically 40–50%
• Bulk liquid in IBC containers