Hydrolyzed Polymaleic Anhydride (HPMA) CAS 26099-09-2
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Product Description
Product Details
Introduction
HPMA is a low molecular weight polyelectrolyte with a general relative molecular weight of 400~800, non-toxic, easily soluble in water, with high chemical and thermal stability, decomposition temperature above 330°C, and obvious solubility-limiting effect at high temperature (<350°C) and high pH.
Specification
Appearance | Light yellow to brown-red transparent liquid |
Solid content (%) | ≥ 50.0 |
Bromine value (mg/g) | ≤ 50.0 |
PH value (1% aqueous solution) | 2.0～3.0 |
Density (20°C), g/cm3 | 1.22～1.25 |
Kinematic viscosity mm²/s | ≥ 8.0 |
Application
HPMA is suitable for alkaline water or used in combination with other drugs.
HPMA still has good scale inhibition and dispersion effect on carbonate below 300℃, and the scale inhibition time can reach 100h.
Due to its excellent scale inhibition and high temperature resistance, HPMA is widely used in desalination flash evaporation device, low pressure boilers, steam locomotives, crude oil dewatering, water and oil pipelines and industrial circulating cooling water.
HPMA is usually compounded with organic phosphonates at 1-15ppm for circulating cooling water, oilfield water injection, crude oil dehydration treatment and furnace treatment of low-pressure boilers, with good scale inhibition and stripping of old scale.
When HPMA is compounded with zinc salt, it can effectively prevent the corrosion of carbon steel.HPMA can also be used as cement admixture, concrete additive and soil conditioner.
Packaging and Storage
HPMA is packed in plastic drums, 25kg per drum or as determined by the user. Storage period is ten months.
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