What is PAC 17%? Medium-Strength Coagulant for Textile Dyeing & Paper Production
5 Key Takeaways:
- PAC 17% is a liquid coagulant with Al₂O₃ ≥ 17%, CAS 1327-41-9
- Density 1.375 g/cm³ (20°C), pH 3.5–5.0 (1% solution) — acidic, requires FRP/HDPE/PVC tanks
- Balanced option: stronger color removal than PAC 10%, lower transport costs than PAC 31%
- Main applications: textile dyeing, paper production, medium-capacity water treatment
- Loc Thien delivers nationwide within 24h — call 0979 891 929 for quotes in 15 minutes
1. What is PAC 17%?
PAC 17% — full name Poly Aluminium Chloride 17% — is an inorganic polymeric aluminum coagulant with general formula [Al₂(OH)ₙCl₆₋ₙ]ₘ, containing minimum 17% aluminum oxide (Al₂O₃). The product is a pale yellow to light brown liquid, more concentrated than PAC 10% but still pumpable for dosing systems.
Within Loc Thien’s PAC product line, PAC 17% occupies the sweet spot: it contains nearly double the active content of PAC 10% (resulting in stronger color/turbidity removal), yet maintains significantly lower transportation costs per kg of active ingredient compared to diluted PAC 10%. Versus concentrated PAC 31%, PAC 17% offers easier handling for medium-capacity systems without requiring heavy-duty pumps.
Thanks to its superior color removal properties, PAC 17% is widely adopted by two key industries: textile dyeing plants (coagulating residual dyes in wastewater) and paper mills (as retention/drainage aid).
2. Technical Specifications of PAC 17%
The table below summarizes PAC 17% specifications per Loc Thien’s MSDS. Actual COA is provided per production batch.
| Parameter | Unit | Value |
|---|---|---|
| Product Name | — | Poly Aluminium Chloride (PAC) Liquid 17% |
| Chemical Formula | — | [Al₂(OH)ₙCl₆₋ₙ]ₘ |
| CAS Number | — | 1327-41-9 |
| Al₂O₃ Content | % | ≥ 17 |
| Density (20°C) | g/cm³ | 1.375 |
| pH (1% solution) | — | 3.5–5.0 |
| Water Insolubles | % | ≤ 0.1 |
| Arsenic (As) | % | ≤ 0.0001 |
| Lead (Pb) | % | ≤ 0.0005 |
| Mercury (Hg) | % | ≤ 0.00001 |
| Appearance | — | Liquid solution, pale yellow to light brown |
| Packaging | — | 200L Drum · 1,000L IBC · Tank · 5–30 ton Tanker |
Note: PAC 17% has acidic pH (3.5–5.0). Contact equipment must use acid-resistant materials — avoid carbon steel or bare stainless steel. See Section 6 for details.
3. Applications of PAC 17%
3.1. Textile Dyeing Wastewater Treatment
This is PAC 17%‘s primary application. Textile dyeing wastewater contains reactive dyes, disperse dyes, starch sizing agents, and surfactants — with COD 800–2,000 mg/L and color 500–3,000 Pt-Co.
Typical treatment sequence:
- PAC 17% 100–200 mg/L → color coagulation, rapid mixing 2 min, slow mixing 15 min
- NaOH → adjust pH to 7.0–8.0 (if needed)
- Anionic polymer 0.5–1.0 mg/L → enlarge flocs, accelerate settling
- Settling 60 min → effluent color <50 Pt-Co (85–90% removal)
3.2. Paper & Pulp Production
In paper machines, PAC 17% serves dual roles:
- Retention aid: Retains fine cellulose fibers and fillers (CaCO₃, kaolin) on wire mesh. Dosage 0.5–2.0 kg/ton paper.
- Drainage aid: Accelerates water drainage through wire, increases machine speed, reduces steam consumption.
Advantages over alum: less pH impact, reduced equipment corrosion.
3.3. Medium-Capacity Water Treatment
PAC 17% is used for water treatment plants with 1,000–5,000 m³/day capacity, where performance exceeds PAC 10% but PAC 31% isn’t yet cost-optimal. Typical dosage 15–40 mg/L depending on source water turbidity.
3.4. Other Industrial Wastewater Treatment
PAC 17% also treats electroplating, food processing, and seafood wastewater — precipitating heavy metals as hydroxides at pH 8.0–9.5, reducing COD/TSS before biological treatment.
4. Dosage & Dosing Methods for PAC 17%
PAC 17% dosage depends on pollutant load. Below are reference values — always conduct jar tests with actual water before full-scale operation.
| Application | Reference Dosage | Notes |
|---|---|---|
| Water Supply (<150 NTU) | 15–40 mg/L | Increase during rainy season |
| Textile Dyeing Wastewater | 100–200 mg/L | Combine with anionic/cationic polymer |
| Electroplating Wastewater | 100–250 mg/L | Reduce Cr⁶⁺ to Cr³⁺ first |
| Food/Seafood Wastewater | 150–300 mg/L | Combine with DAF flotation |
Dosing method: PAC 17% is ready-to-use — dose directly into mixing zone (rapid mix 1–3 min, 80–150 RPM), slow mix 15–30 min (20–40 RPM) for flocculation, settle 60–120 min. For high-color textile wastewater, add 0.5–1.0 mg/L anionic/cationic polymer to enhance floc size and settling speed.
5. PAC 17% vs PAC 10% vs PAC 31% — How to Choose?
| Criteria | PAC 10% | PAC 17% | PAC 31% |
|---|---|---|---|
| Active Content | 10% ± 1% | Al₂O₃ ≥ 17% | ~31% (concentrated) |
| Density (20°C) | 1.19–1.20 g/cm³ | 1.375 g/cm³ | Higher |
| Color Removal | Moderate | Good | Best |
| Transport Cost/kg Active | Highest | Medium | Lowest |
| Ideal For | Small systems, pools, aquaculture | Textile, paper, medium water plants | Large plants (>5,000 m³/day) |
Selection rule: For strong color removal in textile/paper applications with medium-capacity systems → PAC 17% offers optimal performance/cost balance. Large plants with storage capacity → PAC 31%. Small systems prioritizing simplicity → PAC 10%.
6. Storage & Safety Guidelines for PAC 17%
6.1. Compatible Materials
| Material | Recommendation |
|---|---|
| Storage Tanks | FRP (fiberglass), HDPE, PP, PVC |
| Dosing Pumps | PTFE/EPDM diaphragm pumps, PVC/PP pump heads |
| STRICTLY AVOID | Carbon steel, bare stainless steel, aluminum, copper |
6.2. Storage
- Temperature 5–35°C, avoid direct sunlight
- Shelf life 6–12 months per batch COA
- Prevent freezing (below 0°C causes irreversible precipitation)
- Seal drums/IBCs after use
6.3. PPE Requirements
- Chemical-resistant gloves (nitrile/neoprene)
- Chemical goggles
- Long-sleeved protective clothing
6.4. First Aid
- Eye contact: Rinse immediately under running water for 15 min, seek medical help
- Skin contact: Remove contaminated clothing, wash with water/soap
- Ingestion: Rinse mouth with water, DO NOT induce vomiting, seek immediate medical attention
7. Loc Thien — PAC 17% Supplier for Factories & Industrial Zones
Loc Thien Chemicals supplies PAC 17% to textile dyeing plants, paper mills, and water treatment facilities nationwide:
- 6 nationwide warehouses: Stock available in Binh Duong, Ho Chi Minh City, Dong Nai, Long An, Hanoi, Da Nang — same-day delivery.
- 20 specialized tanker trucks: Transport 5–30 tons of liquid PAC 17% per trip, safely and without cross-contamination.
- Batch-specific COA/MSDS: Each shipment includes Certificate of Analysis and MSDS — transparent specifications, traceable origin.
- Free technical consultation: Loc Thien engineers assist with site surveys, dosage calculations, and on-site jar testing.
Call 0979 891 929 — quotes within 15 minutes.
8. Frequently Asked Questions
How does PAC 17% differ from PAC 10%?
They differ in active content and density. PAC 17% contains ≥17% Al₂O₃, density 1.375 g/cm³ — stronger color removal than PAC 10% (10% ± 1%, density 1.19–1.20). PAC 17% suits textile/paper applications, PAC 10% fits small systems and pools.
What is PAC 17%‘s density?
PAC 17% density is 1.375 g/cm³ at 20°C. This value converts volume to mass for pump dosing.
Can PAC 17% treat reactive dye color?
Yes. PAC 17% combined with anionic/cationic polymer (0.5–1.0 mg/L) removes 85–90% reactive dye color. For vat/sulfur dyes, additional FeCl₃ may be needed.
Does PAC 17% corrode equipment?
Yes. PAC 17% has pH 3.5–5.0 (acidic) and contains Cl⁻ ions. Use FRP/HDPE/PVC tanks — avoid carbon steel or bare stainless steel.
Where to buy reliable PAC 17% at competitive prices?
Loc Thien Chemicals — 6 nationwide warehouses, 20 specialized tankers, batch-specific COA/MSDS. Call 0979 891 929 for quotes in 15 minutes, 24h delivery to industrial zones.
See also: PAC 10% — Liquid Coagulant for Small/Medium Systems · What is PAC — Comprehensive Overview · PAC 17% Liquid Price List
LOC THIEN INVESTMENT DEVELOPMENT CO., LTD
Tax Code: 0313650856 — Address: 219/19A, Binh Phuoc B Hamlet, Binh Chuan Ward, Thuan An City, Binh Duong Province
Hotline: 0979 891 929 — Email: [email protected]
Website: hoachatlocthien.com