It is mainly used to prevent the formation of calcium carbonate scale in boiler water. Since it does not contain any inorganic phosphates, it is more suitable for the application of water quality with hardness in the feed water or direct use of tap water to prevent a large amount of sediment from forming in the feed water pipeline and boiler. It contains a dispersant, which can disperse iron oxide, calcium phosphate, and calcium carbonate sediments, and is suitable for low and medium pressure (below 40kg/cm²) boilers.