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Hydrolyzed Polymaleic Anhydride

Hydrolyzed Polymaleic Anhydride

Category :

Catalyst and Auxiliary/Water Treatment Chemicals

CAS NO : 26099-09-2
EC NO :
Molecular Formula : (C4H4O4)n
Main Specifications :
Synonyms : PolymaleicacidAq;Hydrolysed Polymaleic Anhydride;Hydrolyzed Polymaleic Anhydride;Hydrolized polymaleic anhydride;HPMA;Polymaleic Acid;
Hydrolyzed Polymaleic Anhydride
Molecular Structure:Hydrolyzed Polymaleic Anhydride 26099-09-2
Product description:

CAS No:26099-09-2 Dequest P9000
Properties:
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 330oC. HPMA has obvious threshold effect under high temperature (350oC) 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 phosphate scales under temperature 300oC 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:

items

index

Appearance

Clear to umber transparent liquid

Solid content %

48.0min

Bromine value mg/g

80.0max

Average molecular weight

450min

pH value(1%water solution)

2.0-3.0

Density (20oC)g/cm3

1.18min


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. 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 Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
 

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