HPMA Hydrolyzed Polymaleic Anhydride

[CAS] 26099-09-02 Dequest : P9000 1,Properties : HPMA is a low molecular weight polymeride . with average molecular weight 400-800 . No toxicity , soluble in water , high chemical and thermal stability , dicomposed temperature above 330°C .HPMA has obvious threshold effect under high temperature (350°C) and high PH (8.3) level , suitable to be used in alkaline water system or built with agents . It has good scale inhibition against carbonate and phosphoate scales under temperature 300°C with effective time as long as 100 hours . Due to its good scale inhibitiong and high temperature tolerance properties , HPMA is widely used in desalination plant of flash vaporization equipment . low pressure boilwe , 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 . 2, Specification : conform to GB/T 10535-1997 I temsIdexAppearance Clear to umber transparent liquidSolid cotent % ≥ 48.0Bromine value mg/g ≤ 80.0Average molecular weight ≥ 450PH (1% solution ) 2.0-3.0Density(20°C)g/ cm3 ≥ 1.18 3, Using method : 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 . 4, Safety Protection : Acidty , Avoid contact with eye and skin , once contacted , flush with water. 5, Package and Storage : Nomally In 25kg net Plastic Drum , or packing as customers, required .Storage for ten months in room shady and dry place.