PAC (Poly Aluminium Chloride)
Formula: Al2(OH)nCl6-n | Appearance: Yellow/White powder | Solubility: Fully soluble in water
What is PAC (Poly Aluminium Chloride)?
PAC (Poly Aluminium Chloride) (Al2(OH)nCl6-n) is a key water treatment chemical. Appearance: Yellow/White powder. Solubility: Fully soluble in water. It is widely used in drinking water purification, industrial wastewater treatment, and process water conditioning.
Types & Grades
| Grade | Type | Active Content | Best Application |
|---|---|---|---|
| PAC 30% | Spray dry | Al2O3: 30%+ | Drinking water, high purity |
| PAC 28% | Spray dry | Al2O3: 28%+ | Industrial wastewater |
| PAC 26% | Drum dry | Al2O3: 26%+ | General wastewater |
| PAC 24% | Drum dry | Al2O3: 24%+ | Cost-sensitive apps |
Key Specifications (TDS)
| Parameter | Specification | Test Method |
|---|---|---|
| Appearance | Yellow/White powder | Visual |
| Al2O3 content | 28-30% | Titration |
| Basicity | 70-85% | NaOH method |
| pH (1% solution) | 3.0-5.0 | pH meter |
| Insoluble matter | <=0.5% | Gravimetric |
Applications
Drinking water purification
Color and COD removal
TSS and heavy metals
Retention and drainage
Solids removal
Heavy metal removal
How to Select the Right Grade
- Water quality analysis: pH, turbidity, COD, TSS, heavy metals
- Treatment stage: Primary coagulation vs polishing
- Industry: Different wastewater characteristics require different grades
- Jar testing: Always confirm dosage via laboratory jar test
Use our Chemical Selection Tool to find the right grade
Dosage Guide
| Application | Dosage Range | Notes |
|---|---|---|
| Drinking Water | 20-80 mg/L | pH 6.5-8.5 |
| Textile WW | 100-300 mg/L | Color removal |
| Mining WW | 50-200 mg/L | TSS removal |
| Industrial WW | 50-300 mg/L | COD removal |
Note: Final dosage should be confirmed by jar testing. Use our Dosage Calculator
Packaging Options
Woven bag with PE liner
FIBC bulk bag
FIBC bulk bag
Custom branding available
Documentation
- COA (Certificate of Analysis) with every batch
- SDS (Safety Data Sheet) available on request
- TDS (Technical Data Sheet) available on request
- ISO 9001:2015 certificate
- SGS test report available
FAQ
What is PAC?
PAC (Poly Aluminium Chloride) is an inorganic coagulant used in water treatment for removing suspended solids, color, and COD.
What Al2O3 content should I choose?
30% for drinking water, 28% for industrial, 26% for general wastewater. Higher content = better performance but higher cost.
How to determine the right dosage?
Conduct a jar test with your water sample. Typical: 20-80 mg/L for drinking water, 50-300 mg/L for industrial wastewater.
PAC vs Alum?
PAC works at lower dosage, wider pH range, produces less sludge, and better at low temperatures.
Shelf life?
12 months in sealed packaging. Store in dry, cool place. Avoid moisture.
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