scale inhibitor and dispersant with high temperature tolerance

Hydrolyzed Polymaleic Anhydride (HPMA)
Keywords:HPMA  scale inhibition  industrial circulating cool water systems corrosion inhibition organic phosphonate circulating cool water system
CAS No.
26099-09-02
Dequest:
P9000
Structural Formula:
Properties
HPMA is a low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, high chemical andthermal stability, decomposed temperature above 330℃.HPMA has obvious threshold effect under  high temperature (350℃) and high  pH（8.3）level, suitable to be used inalkaline water system orbuilt with agents. It has goodscale inhibition against carbonate and phosphate scales under temperature 300℃ with effective time as long as 100 hours. Due to its goodscale inhibition and high temperature tolerance properties,HPMA is widely used indesalination plant of flash vaporization equipment, low pressure boiler, steam locomotive, crude oil evaporation,petroleum pipeline, andindustrial circulating cool water systems. In addition,HPMA has goodcorrosion inhibition effect when used together with zinc salt.
HPMA can also used as additives for cement.
Specification
Items
Index
Appearance
Clear to umber transparent liquid
Solid content %
48.0min
Bromine value mg/g
80.0max
Average molecular weight
450min
pH （1％water solution）
2.0-3.0
Density （20℃）g/cm3
1.18min
Usage
HPMA is usually used together withorganic phosphonate at dosage of 1-15ppm forcirculating cool water system, oilfield fill water, crude oil dewatering and low-pressure boilers.HPMA has goodscale inhibition (98%) andscale stripping properties. When used together with zinc salts, it can effectively inhibit carbon steel corrosion.
Package and Storage
Normally In 250kg net Plastic Drum, IBC drum can also be used as required.Storage for one year in room shady and dry place.
Safety and Protection
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
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