Hydrolyzed Polymaleic Anhydride (Hpma) By Zaozhuang Kerui Chemicals Co., Ltd

We are engaged in manufacturing, exporting and supplying excellent quality Hydrolyzed Polymaleic Anhydride (HPMA) to our valuable clients. 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 330a . HPMA has obvious threshold effect under high temperature (350a ) and high pHi 8.3i level, suitable to be used in alkaline water system or built with agents. It has good scale inhibition against carbonate and phosphate scales under temperature 300a 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.

Specification:
Appearance : 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) : 2.0-3.0
Density (20a )g/cm3 : 1.18 min

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. HPMA has good scale inhibition (98%) and scale stripping properties.