Hydrolyzed Polymaleic Anhydride (HPMA)

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Hydrolyzed Polymaleic Anhydride (HPMA)
Posting date : Aug 08, 2012
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29-
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Properties : 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℃. It has obvious threshold effect under high temperature (350℃) and high pH (8.3) level, suitable to be used in alkaline water system or built with agents. It has a 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. It is widely used in desalination plant of flash vaporization equipment, a low pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cool water systems. In addition. It has a good corrosion inhibition effect when used together with zinc salt. It can also used as additives for cement. Specification : Items Index Appearance Pale yellow to umber transparent liquid Solid content % 48.0min Bromine value mg/g 80.0max Average molecular weight 450min Density (20℃) g/cm3 1.18min pH (1%Water solution) 2.0-3.0 Usage : 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. It has a 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 in 200L plastic drum, IBC (1000L) can also be used as required. Storage for one year in a cool and dry place. Safety Protection : Acidity. Avoid contact with eyes and skin. Once contacted, flush with water.

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