Editorial Technical Reference

Industrial Grade Polyaluminum Chloride Coagulant

This page explains how Industrial Grade Polyaluminum Chloride Coagulant is classified within Other Chemical Products Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Polyaluminum chloride (PAC) is an inorganic polymer coagulant manufactured through controlled hydrolysis of aluminum salts.

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Industrial Grade Polyaluminum Chloride Coagulant in a manufacturing environment
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Product Specifications

Technical details and manufacturing context for Industrial Grade Polyaluminum Chloride Coagulant

Definition
Polyaluminum chloride (PAC) is an inorganic polymer coagulant manufactured through controlled hydrolysis of aluminum salts. It serves as a critical raw material in industrial water treatment processes, providing superior flocculation performance compared to traditional aluminum sulfate. This chemical product is essential in B2B supply chains for wastewater treatment plants, paper mills, and mining operations, where it removes suspended solids, organic matter, and phosphates. Its high efficiency reduces sludge volume and operational costs across multiple industrial sectors. The product is supplied as a solid or liquid, with typical aluminum oxide content of 28–32% (GB/T 22627), basicity of 40–90%, and a pH range of 3.5–5.0 for optimal coagulation. Other parameters include density (1.2–1.4 g/cm³ at 20°C), viscosity (10–30 mPa·s), insoluble matter (≤0.5%), iron content (≤0.5%), chloride content (≤0.2%), particle size (0.5–2.0 mm), operating temperature (0–40°C), storage stability (12 months), and solubility (≥95%). These values are reference ranges and must be verified for the specific product model and application. The product is intended for use in industrial water treatment systems; it is not for direct human consumption. Always consult the legal manufacturer or supplier for detailed specifications, safety data, and compliance with applicable standards.
Working Principle
When added to water, PAC hydrolyzes to form positively charged aluminum hydroxide polymers. These polymers neutralize the negative charge on colloidal particles, causing them to aggregate into larger flocs. The flocs then settle out, removing suspended solids, organic matter, and phosphates. The efficiency depends on factors such as pH, dosage, and mixing conditions. Proper pH control (3.5–5.0) is critical for optimal performance. Overdosing or underdosing can reduce effectiveness, and high chloride content may increase corrosion risk. The product should be stored sealed and dry to maintain stability.
Common Materials
Aluminum hydroxide, Hydrochloric acid, Calcium carbonate
Technical Parameters
ParameterTypical rangeNotes & selection driver
Aluminum Oxide ContentRequired28–32 %Primary active component concentrationGB/T 22627
BasicityRequired40–90 %Degree of hydroxylation in polymer structureGB/T 22627
DensityRequired1.2–1.4 g/cm³Liquid solution density at 20°C
Insoluble MatterRequired≤0.5 %Maximum allowable insoluble impuritiesGB/T 22627
Iron Content≤0.5 %Maximum iron impurity levelGB/T 22627
Viscosity10–30 mPa·sDynamic viscosity at 20°C
pH Value3.5–5.0Optimal for coagulation.
Chloride Content≤0.2 %Corrosion risk if high.
Particle Size0.5–2.0 mmAffects dissolution rate.
Operating Temperature0–40 °COutside range may reduce efficiency.
Storage Stability12 monthsKeep sealed and dry.
Solubility≥95 %High solubility ensures quick action.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Aluminum hydroxide polymer Part
    Primary flocculating agent that neutralizes colloidal charges
    Material: Inorganic aluminum compound
  • Chloride ions Part
    Counterions that stabilize the polymer structure
    Material: Chlorine compounds
  • Calcium additive Optional Part
    Enhances coagulation efficiency and pH buffering
    Material: Calcium carbonate

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 2 bar (typical dosing pressure)
flow rate: Dependent on system design, typically 0.5-5 m³/h for dosing
temperature: 5-40°C (optimal 15-30°C)
slurry concentration: 5-15% w/w (optimal 8-12%)
Media Compatibility
✓ Municipal wastewater ✓ Industrial process water ✓ Cooling tower water
Unsuitable: High salinity seawater (>35,000 ppm TDS)
Sizing Data Required
  • Raw water turbidity (NTU)
  • Daily treatment volume (m³/day)
  • Target effluent quality (e.g., turbidity removal %)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion-induced degradation
Cause: Polyaluminum chloride's acidic nature (pH typically 2-3) can corrode storage tanks, piping, and dosing equipment made from incompatible materials like carbon steel or certain plastics, leading to leaks, contamination, and structural failure.
Crystallization and clogging
Cause: Improper storage conditions (e.g., freezing temperatures or excessive heat) or prolonged stagnation can cause the coagulant to crystallize or form solid deposits, blocking valves, pumps, and injection points, disrupting dosing accuracy and flow.
Maintenance Indicators
  • Visible corrosion, pitting, or leaks around storage tanks, pumps, or pipe joints, especially at welds or connections.
  • Audible pump cavitation or motor strain, or visual flowmeter irregularities indicating reduced/erratic dosing due to partial blockages or viscosity changes.
Engineering Tips
  • Use corrosion-resistant materials (e.g., HDPE, PVC, stainless steel 316L, or fiberglass) for all contact surfaces, and implement routine thickness testing and pH monitoring of stored product to detect early corrosion.
  • Maintain storage temperatures between 5-40°C, ensure regular agitation or recirculation to prevent settling/crystallization, and install inline filters with scheduled cleaning to avoid clogging in dosing systems.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM D2035-19 - Standard Practice for Coagulation-Flocculation Jar Test of Water EN 1302:1999 - Chemicals used for treatment of water intended for human consumption - Aluminium-based coagulants

Quoted from the published standard.

Manufacturing Precision
  • Aluminum Oxide (Al2O3) Content: +/- 1.0%
  • Basicity: +/- 5.0%
Quality Inspection
  • Jar Test for Coagulation Efficiency
  • Atomic Absorption Spectroscopy for Heavy Metal Content
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
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Supplier transparency
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Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Industrial Grade Polyaluminum Chloride Coagulant

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Runjin Refractories
Shandong, CN
4078 personnel staff
Also makes: Casting Core
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Solid Polyaluminium Chloride”
View source page ↗ runjinrefractories.com · recorded 2026-08-21
View profile Send enquiry
Shandong Aojin Chemical Technology Co., Ltd.
Zibo, Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Polyaluminium Chloride/PAC”
View source page ↗ aojinchem.com · recorded 2026-09-04
View profile Send enquiry
Xinqi Polymer Co., Ltd.
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Polyaluminium Chloride”
View source page ↗ xinqipolymer.com · recorded 2026-09-04
View profile Send enquiry

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Frequently Asked Questions

What is the typical aluminum oxide content of this PAC?

The reference range is 28–32% as per GB/T 22627. However, the exact value for a specific product batch should be confirmed with the manufacturer or supplier.

What is the recommended pH range for coagulation?

The optimal pH range is 3.5–5.0. Operating outside this range may reduce coagulation efficiency. Always adjust pH based on the specific water chemistry and verify with jar tests.

How should this product be stored?

Store in a sealed, dry container to maintain stability. The storage stability is typically 12 months under proper conditions. Avoid exposure to moisture and extreme temperatures.

Is this product suitable for drinking water treatment?

This product is intended for industrial water treatment. For potable water applications, ensure the product meets relevant drinking water standards and consult the supplier for certification.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Industrial Grade Polyaluminum Chloride Coagulant.

PAC coagulant Polyaluminium chloride Industrial water treatment chemical

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 11 October 2026

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