Hydrolyzed Polymaleic Anhydride

1,HPMA 98%
2,Hydrolyzed Polymaleic Anhydride
3,CAS NO 26099-09-02
4,water treatment chemical
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. HPMA 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.
HPMA can also used as additives for cement.
Technical requirements

Name of indicators
Indicators
Solvent
Water Law
Solid content%≥
48.0
48.0
Average molecular weight≥
400
300
Bromine valuemg/g≤
360
100
PH by 1% aqueous solution
3.0
3.0
Density g/cm
3
20/20°C
1.18
1.18

It has 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, 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.
Package: 250 kg / Plastic barrels
Dry storage Ventilation Exposure is strictly prohibited and the rain