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ATMP (Amino Trimethylene Phosphonic Acid)

ATMP or aminotris (methylenephosphonic acid) is a phosphonic acid/phosphonate. It is an excellent antiscalant and chelating agent to most metal ions like Ca, Ba, Mg, Fe and Pb, especially Calcium Carbonate (CaCO3). In the water system, it is difficult to hydrolyze and can distort the lattice. In a higher concentrated system, ATMP is also a good corrosion inhibitor. ATMP acid is used as a chelating agent in woven and dyeing industries and as a metal surface treatment agent.

HEDP (1 – Hydroxyethlyidene 1, 1 – Diphosphonic Acid)

HEDP (Hydroxyethylidene diphosphonic acid) is an organic phosphonic acid (phosphonate). The solid state of HEDP is crystal powder. It is also available as a colorless solution with varying concentrations according to requirements. HEDP forms stable chelating compounds with Cu, Fe, and Zn ions in water and shows excellent corrosion and scale inhibition capabilities in high-pH and temperature (? 482 °F) conditions. HEDP is commonly used as an organic scale and corrosion inhibitor for steel substrates in the metalworking and oilfield industries. It is also a common additive for industrial water treatment, and can be used as a cleaning agent for swimming pools. Miscellaneous applications include: dye fixer and sequestering agent for textile processing; industrial detergent; peroxide bleach stabilizer.