Phosphono Carboxylic Acid Copolymer PCA Water Treatment Chemical for Broad-Spectrum Scale Control with Wide Water Quality Tolerance and Chemical Stability
Brand Name:HOYOSHEE
Certification:ISO9001
Model Number:HYX-WT12
Minimum Order Quantity:1KG
Delivery Time:5-8 working days
Payment Terms:L/C,D/A,D/P,T/T,,
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Product Details
Copolymer of Phosphono and Carboxylic Acid (PCA) CAS 71050-62-9
Water Treatment
PCA is an advanced water treatment chemical that effectively
prevents scale formation and corrosion in industrial water systems
through multiple mechanisms of action.
Mechanism of Action
PCA prevents scale formation and corrosion through three primary
mechanisms:
- Chelation / Complexation - The carboxylic groups chelate calcium and magnesium ions in the water, reducing the concentration of scale-forming ions.
- Crystal Lattice Distortion - The phosphonic groups adsorb onto the surface of growing micro-crystals, disrupting their normal growth pattern and preventing them from forming hard, adherent deposits.
- Dispersion / Electrostatic Repulsion - The polymer disperses suspended particles, preventing them from aggregating and depositing on metal surfaces.
Quantum chemistry studies have shown that PCA's corrosion
inhibition performance primarily comes from the phosphonic group, which readily donates electrons to the empty d-orbitals of iron
atoms on the metal surface, forming a protective adsorption layer.
Performance Advantages
| Advantage | Description |
|---|---|
| Broad-Spectrum Scale Control | Effective against calcium carbonate, calcium phosphate, barium sulfate, strontium sulfate, and silica/silicate scales |
| Wide Water Quality Tolerance | Performs well in high-pH, high-hardness, high-alkalinity, and high-concentration-ratio conditions |
| Chemical Stability | Excellent thermal stability and strong resistance to chlorine oxidation |
| Synergistic Effects | Works well in combination with other organic phosphonates, copolymers, zinc salts, and benzotriazole (BTA) |
| Environmentally Friendly Options | Low-phosphorus formulations (<3% phosphorus content) align with green chemistry principles |
Applications
Industrial Circulating Cooling Water Systems
PCA is widely used in cooling towers and recirculating cooling
systems to prevent scale formation and corrosion on heat exchange
surfaces. Typical dosage is 5-20 mg/L. Studies have shown that at concentrations as low as 5 mg/L, PCA
achieves over 90% inhibition of calcium carbonate and calcium
phosphate scales.
Oilfield Water Injection Systems
In oilfield operations, PCA is used to prevent scaling in injection
wells and pipelines, as well as to reduce corrosion rates on
downhole equipment and surface facilities.
Formulated Products
PCA is often used as a component in blended formulations with:
- Organic phosphonates (ATMP, HEDP, PBTCA)
- Other copolymers
- Zinc salts
- Benzotriazole (BTA)
These blends provide enhanced performance for demanding water
conditions, such as high-hardness and high-alkalinity cooling
water.
Product Grades and Specifications
| Parameter | Grade I (Standard) | Grade II (High-Performance) |
|---|---|---|
| Solid Content | ≥ 30.0% | 37.5-42.5% |
| Total Phosphorus (as PO₄³⁻) | ≥ 7.0% | ≥ 0.8% |
| Density (20°C) | ≥ 1.10 g/cm³ | ≥ 1.20 g/cm³ |
| pH (1% solution) | 2.0-3.0 | 3.5-4.5 (stock solution) |
Grade II is equivalent to Belsperse 164 from BWA Water Additives.
Usage and Handling
Dosage
- Standalone: 5-20 mg/L
- In blends: Dosage adjusted based on formulation and water quality
Packaging
Available in 25 kg, 200 kg plastic drums, or 1000 L IBC containers
Storage
Store in a cool, ventilated indoor area; shelf life is typically
10-12 months
Safety
PCA is acidic. Avoid contact with skin and eyes. In case of
contact, rinse thoroughly with plenty of water.
Phosphono Carboxylic Acid Copolymer PCA Water Treatment Chemical for Broad-Spectrum Scale Control with Wide Water Quality Tolerance and Chemical Stability
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