
Poly Aluminium Chloride (PAC, CAS 1327-41-9), powder 28–31% Al2O3, basicity 40–90%, supplied wholesale by Zyntex. Pre-polymerized coagulant for drinking water, wastewater, paper and process water. CoA and SDS.
Poly aluminium chloride is a family of partly neutralized aluminium chlorides that contain polymeric aluminium species. Powder grades contain about 28–31% Al2O3, and basicity ranges from about 40% to 90% depending on the grade. Higher basicity means lower alkalinity consumption and better performance in cold water.
Water treatment plants use PAC as a coagulant for drinking water and wastewater, because it forms flocs faster, works over a wider pH range and produces less sludge than Aluminum Sulfate. Similarly, paper mills use it for retention, sizing and pitch control, and industries use it for process water and effluent treatment.
Furthermore, the highest-basicity member of the family is Aluminium Chlorohydrate (ACH). For iron-based coagulants, see Ferric Chloride.
Typical uses include, for example:
💧 Drinking Water
Coagulant for clarification.
🏭 Wastewater
Coagulant for municipal as well as industrial effluents.
📄 Paper Industry
Retention, sizing as well as pitch control.
⚙️ Process Water
Treatment of industrial process water.
| Parameter | Standard Value |
|---|---|
| Product Name | Poly Aluminium Chloride (PAC) |
| CAS Number | 1327-41-9 |
| AL2O3 Content | 28% – 31% (Powder Grade) |
| Basicity | 40% – 90% (per grade) |
| Forms | Powder and liquid |
| Documents | CoA as well as SDS with every lot |
⚠️ Safety & Handling: May cause serious eye irritation and skin irritation; solutions are acidic. Avoid contact with eyes and also wear gloves and eye protection. Store in tightly closed, moisture-proof packaging, because the powder absorbs water. Always consult the Safety Data Sheet (SDS), because it contains the full classification and handling instructions.
How does PAC compare with aluminium sulfate?
PAC forms flocs faster, works over a wider pH range and consumes less alkalinity, so it usually needs lower doses than aluminium sulfate.
Which basicity should I choose?
Higher basicity suits soft or cold water, whereas medium basicity suits most standard applications; please share your water parameters.
How can I get a price and documents?
Prices depend on quantity, packaging and destination, so please contact us with your required volume. We then send a quotation together with the CoA and SDS.