Polymaleic Acid (HPMA)
CAS Number: 26099-09-2
Hydrolyzed polymaleic acid (HPMA) is a low-molecular-weight polymer excellent at inhibiting calcium carbonate, calcium sulfate, and calcium phosphate scales in high-temperature and high-hardness water systems. It exhibits superior thermal stability compared to polyacrylic acid, making it ideal for high-temperature boiler and process water applications. HPMA also acts as a dispersant for iron and other metal oxides.
Technical Specifications
| density | 1.15–1.20 g/cm³ |
| appearance | Light amber liquid |
| pH (as is) | 1–3 |
| solidContent | 48–52% |
| molecularWeight | 400–800 g/mol |
Applications
- High-temperature boiler water treatment
- Industrial cooling water scale inhibition
- Phosphate scale control in process water
- Dispersant for iron oxide deposits
- Combined use with phosphonate programs
Key Features
- Outstanding thermal stability up to 200°C
- Effective scale inhibition at very low dosages
- Broad compatibility with oxidizing and non-oxidizing biocides
- Superior performance against mixed calcium scales
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CAS Number
26099-09-2
Category
Water Treatment ChemicalsAvailability
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