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                Amino Trimethylene Phosphonic Acid(ATMP)
                ATMP has excellent chelation, low threshold inhibition and lattice distortion ability. in water system ,it can prevent scale formation, particularly for calcium carbonate. in water, ATMP has good chemical stability and is hard to be hydrolyzed. 
                HEDP
                EDTMPA is white crystal powder at room temperature, with melting point 215-217℃, hard to be dissolved in water, the solubility is less that 5% at room temperature, easy dissolved in ammonia. 
                EDTMPS
                EDTMPS is a nitrogen-containing organic phosphonic acid, which is a cathodic corrosion inhibitor. Compared with inorganic polyphosphate, the corrosion inhibition rate of EDTMPS is 3 ~ 5 times higher than that of inorganic polyphosphate. 
                EDTMPA(Solid)
                EDTMPA is white crystal powder at room temperature, with melting point 215-217℃, hard to be dissolved in water, the solubility is less that 5% at room temperature, easy dissolved in ammonia. 
                HMDTMPA
                HMDTMPA is soluble in water, it is a good scale inhibitor for calcium sulfate, suitable for use in situation of high pH value and high alkaline. HMDTMPA can be used for water treatment in boiler and RO membrane treatment.
                DTPMPA
                DTPMPA is innocuous, easy to be dissolved in acid solution. DTPMPA has excellent scale and corrosion inhibition and good thermal tolerance ability. DTPMPA can inhibit the scale formation of carbonate, sulfate and phosphate. 
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