Main Products
- Polycarboxylic antiscalant and dispersant
- Polyacrylic Acid (PAA) 50%
- Polyacrylic Acid (PAA) 63%
- Polyacrylic Acid Sodium Salt (PAAS) 45%
- Polyacrylic Acid Sodium Salt Solid (PAAS)
- Hydrolyzed Polymaleic Anhydride (HPMA)
- Polymaleic Acid (PMA)
- Copolymer of Maleic and Acrylic Acid (MA/AA)
- Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer (AA/AMPS)
- Acrylic Acid/Acrylate/Phosphonic Acid/Sulfosalt Tetra-copolymer (TH-241)
- TH-613 Acrylic-acrylate-sulfosalt copolymers
- Copolymer of Phosphono and carboxylic Acid (PCA)
- TH-1100 acrylic homopolymer
- TH-1010 acrylic homopolymer
- TH-2000 Carboxylate-Sulfonate copolymer
- TH-3100 carboxylate-sulfonate-nonion tri-polymer
- TH-5000 Carboxylate-Sulfonate copolymer
- TH-904 aqueous dispersant
- TH-361 Polycarboxylate
- Scale Inhibitor for Black Liquid Evaporator In Papermaking
- Ceramic dispersant TH-908
- Carboxylate-sulfonate-nonion terpolymer
- Polyepoxysuccinic Acid (PESA)
- Sodium Salt of Polyaspartic Acid (PASP)
- Biodegradable antiscalant and dispersant
- Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
- Salts of Phosphonates
- Biocide and Algicide
- Built Scale & Corrosion Inhibitors and Pretreatment Filming Agents
- Corrosion Inhibitor
- Oxygen Scavenger
- Reverse Osmosis Chemicals
- Other
Hydrolyzed Polymaleic Anhydride (HPMA)
CAS No. 26099-09-2
Structural Formula:
Properties:
Hydrolyzed Polymaleic Anhydride 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℃. Hydrolyzed Polymaleic Anhydride 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. 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. Hydrolyzed Polymaleic Anhydride can also used as additives for cement.
Specification:
| Items | Index |
|---|---|
| Appearance | Pale yellow to umber transparent liquid |
| Solid content % | 50.0 min |
| Bromine value mg/g | 50.0 max |
| pH(1% water solution) | 2.0-3.0 |
| Density (20℃) g/cm3 | 1.22-1.25 |
Usage:
Hydrolyzed Polymaleic Anhydride 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. Hydrolyzed Polymaleic Anhydride 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.
Synonyms:
HPMA; Hydrolyzed Polymaleic Anhydride; poly(maleicacid);MALEIC ACID POLYMER;Polymaleic Acid