Industrial Chemicals


Poly Maleic Acid (PMA)

Poly Maleic Acid (PMA) is a low molecular weight polymerize, with average molecular weight 800-1000. No toxicity, soluble in water, high chemical and thermal stability, decomposed temperature above 330 Deg. C. Poly Maleic Acid (PMA) has obvious threshold effect under high temperature (350 Deg C) 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 300 Deg. C with effective time as long as 100 hours. Due to its good scale inhibition and high temperature tolerance properties, Poly Maleic Acid (PMA) 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, Poly Maleic Acid (PMA) has good corrosion inhibition effect when used together with zinc salt. Poly Maleic Acid (PMA) can also used as additives for cement.

Polymaleic acid is the utmost suitable product or additive used as antiscaling agent for all heated water processes such as Sea water desalination, condenser water, vapor generating steam, all other heated water/steam processings. It is standing and functioning superiorly as anti scaling at normal or elevated temperature due to its crystal modification effect. Other polymers, or additive that are usually applied for antiscaling do not show this superiority.





Clear to Amber transparent liquid

Solid content %


Bromine value mg/g

80.0 max

Average molecular weight

800 -1000 min

pH value (1% Water Solution)

2.0 - 3.0

Density (20 Deg, C) g/cm3

1.18 min

Poly Maleic Acid (PMA) 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. Poly Maleic Acid (PMA) 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, 50 kgs Carboy can also be available 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.



-: Product Range :-