ATMP?Na5 is the salt of ATMP, it can inhibit calcium carbonate particularly in water treatment system . ATMP?Na5 can be used in circulating cool system in power plant, oil refinery plant and oilfield refill water system . ATMP?Na5 is a general low cost scale inhibitor, it has good corrosion inhibition to zinc salt and phosphate, its chelating ability is good as well.