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            Shandong XinTai Water Treatment Co,.Ltd.

            Top-Quality Manufacturer In Water Treatment Industry


            Polycarboxylic Antiscalant

            Hydrolyzed Polymaleic Anhydride (HPMA)


              【CAS】 26099-09-02                           Dequest P9000

              Structural Formula:


              HPMA is a low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, high chemical and thermal stability, decomposed temperature above 330. HPMA has obvious threshold effect under high temperature (350) and high pH8.3level, suitable to be used in alkaline water system or built with agents. It has good scale inhibition against carbonate and phosphate scales under temperature 300 with effective time as long as 100 hours. Due to its good scale inhibition and high temperature tolerance properties, HPMA is widely used in desalination plant of flash vaporization equipment, low pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cool water systems. In addition, HPMA has good corrosion inhibition effect when used together with zinc salt. HPMA can also used as additives for cement.





              Pale yellow to umber transparent liquid

              Solid content %

              48.0 min

              Bromine value mg/g

              80.0 max

              Average molecular weight

              450 min

              pH (1% solution)


              Density (20℃) g/cm3

              1.18 min



              HPMA is usually used together with organic phosphonate at dosage of 1-15ppm for circulating cool water system, oilfield fill water, crude oil dewatering and low-pressure boilers. HPMA has good scale inhibition (98%) and scale stripping properties. When used together with zinc salts, it can effectively inhibit carbon steel corrosion.

              Package and Storage:

              Normally 250kg net in drum, IBC, or as required.Storage for one year in shady room and dry places.

              Safety Protection:

              Acidity, Avoid contact with eye and skin, once contacted, flush with water.

              Update : 2014/12/31 10:49:39 Hits : 4079

            CONTACT Us

              Address: Zhongtai Industrial Park ,Xiwangzhuang Town, Shizhong District, Zaozhuang City, Shandong Province, P.R.C
              Plant Size: Small and Medium-sized
              EXP TEL:0086-632-3461088
              Name: Jin Tsui

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