Hydrolyzed Polymaleic Anhydride-HPMA
CAS No.: 26099-09-2
Properties:
HPMA is a low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, high chemicaland thermal stability, decomposed 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.
Specification:
Appearance: Clear to umber transparent liquid
Solid content: 48.0min
Bromine value: 360mg/gmax
Average molecular weight: 400 min
pH value(1%water solution): 3.0 max
Density (20°C)g/cm3: 1.18min
Package:Normally In 250kg net Plastic Drum, IBC drum can also be used as required.
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 Iowpressure boilers. HPMA has good scale inhibition (98%) and scale stripping properties. When used together with zinc salts, it can effectively inhibit carbon steel corrosion.
