Όλα τα Προϊόντα
PCA Water Treatment Chemical - Phosphono Carboxylic Acid Copolymer as Effective Scale Inhibitor and Corrosion Inhibitor with High Solid Content
| Τόπος καταγωγής | Κίνα |
|---|---|
| Μάρκα | HOYOSHEE |
| Πιστοποίηση | ISO9001 |
| Αριθμό μοντέλου | HYX-WT10 |
| Ποσότητα παραγγελίας min | 1KG |
| Τιμή | Διαπραγματεύσιμος |
| Συσκευασία λεπτομέρειες | 1kg;|25kg;|100kg |
| Χρόνος παράδοσης | 5-8 εργάσιμες |
| Όροι πληρωμής | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Δυνατότητα προσφοράς | 500 τόνοι/μήνα |
Λεπτομέρειες
| CAS | 71050-62-9 | μορφή | Άχρωμο έως ανοιχτό κίτρινο διαφανές υγρό |
|---|---|---|---|
| Πυκνότητα | ≥ 1,10 g/cm³ | pH | 2,0,-,3,0 |
| Αποθήκευση | δροσερό και αποφύγετε το ηλιακό φως | στερεό περιεχόμενο | ≥ 30,0% |
| Επισημαίνω | Corrosion Inhibitor PCA Water Treatment Chemical,Scale Inhibitor Phosphono Carboxylic Acid Copolymer,High Solid Content Scale Inhibitor |
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Περιγραφή προϊόντων
Copolymer of Phosphono and Carboxylic Acid (PCA) CAS 71050-62-9
A highly effective scale inhibitor and corrosion inhibitor for water treatment applications.
Chemical Structure and Properties
POCA is produced by introducing a phosphonic group into a carboxylic acid copolymer backbone. This unique structure combines the properties of both carboxylic copolymers and organic phosphonates, enabling it to perform multiple functions simultaneously.
| Property | Description |
|---|---|
| Appearance | Colorless to light yellow transparent liquid |
| Solid Content | ≥ 30.0% (standard grade); 50% grade also available |
| Total Phosphorus (as PO₄³⁻) | ≥ 7.0% (standard); low-phosphorus versions ≥ 0.5-0.8% |
| Density (20°C) | ≥ 1.10 g/cm³ |
| pH (1% solution) | 2.0-3.0 |
| Molecular Weight | Typically 2,000-5,000 Daltons |
Mechanism of Action
POCA 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 POCA'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
POCA 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, POCA achieves over 90% inhibition of calcium carbonate and calcium phosphate scales.
Oilfield Water Injection Systems
In oilfield operations, POCA 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
POCA 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
POCA is acidic. Avoid contact with skin and eyes. In case of contact, rinse thoroughly with plenty of water.
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