Poly Aluminium Chloride CAS 1327-41-9

Aure Chemical's Poly Aluminium Chloride (PAC) is a high-efficiency inorganic polymer coagulant. Available in both liquid and powder forms, our PAC is engineered for superior performance in a wide range of water and wastewater treatment applications. It functions by neutralizing the charge of suspended particles, leading to effective flocculation and sedimentation. This results in a significant reduction in turbidity, color, and other contaminants, ensuring clearer, safer water.

Basic Information of Poly Aluminium Chloride (PAC)

CAS No.:	1327-41-9
EC No.:	215-477-2
Linear Formula:	[Al₂(OH)ₙCl₆₋ₙ]ₘ
Molecular Weight:	79.44
Appearance:	Glassy solid
Density:	1.36[at 20℃]
Solubility:	soluble H2O, forms slightly turbid colloidal solution.
Stability:	Stable. Incompatible with many metals.

Industrial Applications

Our Poly Aluminium Chloride is a versatile chemical used across multiple industries for its reliable coagulation and flocculation properties:

Municipal & Potable Water Treatment: Effectively removes suspended solids (turbidity), color, and microorganisms to produce safe drinking water that meets stringent quality standards.
Wastewater Treatment: Used to treat industrial and municipal wastewater, efficiently removing contaminants such as phosphates, COD (Chemical Oxygen Demand), and BOD (Biochemical Oxygen Demand).
Pulp and Paper Industry: Acts as a sizing agent to control paper absorbency and as a retention aid to improve the efficiency of the papermaking process.
Textile Industry: Applied in the treatment of effluent from dyeing and finishing processes to remove color and other pollutants.
Oil and Gas Industry: Utilized in the treatment of produced water and drilling wastewater, separating oil and suspended solids.
Mining Industry: Aids in solid-liquid separation in mineral processing and tailing treatment.

Advantages of Aure Chemical PAC

Choosing Aure Chemical's Poly Aluminium Chloride provides several key benefits over traditional coagulants like aluminum sulfate (alum) or ferric chloride:

Greater Efficiency: Works effectively at lower dosages, reducing overall chemical consumption and operational costs.
Wider pH Range: Maintains high performance across a broad pH spectrum, often eliminating the need for pH adjustment with lime or soda ash.
Improved Water Quality: Results in lower residual aluminum content in treated water and less impact on the final pH.
Reduced Sludge: Produces denser, more compact sludge that is easier to dewater and dispose of, leading to cost savings.
Faster Floc Formation: Forms larger and more robust flocs that settle more quickly, improving clarifier throughput and efficiency.

Frequently Asked Questions (FAQ)

What is Poly Aluminium Chloride (PAC)?

Poly Aluminium Chloride (PAC) is an inorganic polymer coagulant with the general formula [Al₂(OH)ₙCl₆₋ₙ]ₘ. It is widely used in water and wastewater treatment as an efficient coagulant and flocculant, helping remove suspended solids, turbidity, and organic matter.

Is Poly Aluminium Chloride toxic?

PAC is not considered highly toxic, but concentrated solutions are acidic and can be irritating to skin, eyes, and the respiratory tract. Proper handling with personal protective equipment (PPE) such as gloves and goggles is recommended.

Is Poly Aluminium Chloride hazardous?

PAC is classified as an irritant. While not usually regulated as a dangerous good for transport, it can cause irritation or burns on contact. Liquid PAC may be corrosive to certain metals. Safety Data Sheets (SDS) should always be consulted before handling.

What is Poly Aluminium Chloride in water treatment?

In water treatment, PAC acts as a powerful coagulant. It neutralizes the charges of suspended particles, causing them to aggregate into larger flocs that settle quickly. This process improves water clarity, removes color, and reduces contaminants like COD, BOD, and phosphates.

How to make Poly Aluminium Chloride?

Industrially, PAC is manufactured by reacting aluminium hydroxide or bauxite with hydrochloric acid under controlled conditions, sometimes with additional stabilizers. The process yields liquid or spray-dried solid PAC, available in different basicity grades (low, medium, high) tailored for specific applications.

What are the advantages of PAC compared to alum (aluminium sulfate)?

PAC works effectively at lower dosages, produces less sludge, forms stronger and faster-settling flocs, and performs well across a wider pH range compared to traditional alum.

Can Aure Chemical supply PAC in bulk?

Yes. Aure Chemical supplies 25/50kg woven bag, with custom packaging options available upon request.

Safety & Storage

Hazards Identification

Product: Poly Aluminium Chloride (PAC), CAS 1327-41-9
GHS Classification (typical): Irritant; acidic solutions may be corrosive to some metals.
Hazard Statements: H319 (Causes serious eye irritation); H315 (Causes skin irritation); H335 (May cause respiratory irritation – dust/mist).
Precautionary Statements: P280 (Wear protective gloves/eye protection); P261 (Avoid breathing dust/mist); P264 (Wash thoroughly after handling); P305+P351+P338 (IF IN EYES: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do).

GHS07: Harmful pictogram — GHS07: Irritant / Harmful

* Note: Show GHS05 only for concentrated acidic solutions that meet corrosive criteria.

Safe Handling & PPE

Use local exhaust ventilation; avoid generating dust or inhaling mist/aerosol.
Wear chemical-resistant gloves (e.g., nitrile), safety goggles or face shield, and protective clothing.
Do not eat, drink, or smoke while handling; wash hands and exposed skin after work.
Avoid contact with bases/alkalis and reactive metals in presence of moisture (acidic solutions).

First Aid Measures

Inhalation: Move to fresh air; keep at rest. Seek medical advice if symptoms persist.
Skin Contact: Remove contaminated clothing; rinse skin with water and mild soap for 15 minutes.
Eye Contact: Rinse cautiously with water for ≥15 minutes; remove contact lenses if easy; seek medical attention.
Ingestion: Rinse mouth; do not induce vomiting; get medical attention if unwell.

Storage Conditions

Store in a cool, dry, well-ventilated area; keep containers tightly closed to prevent moisture uptake and caking.
Keep away from alkalis, strong bases, and incompatible materials; protect from freezing (for liquid grades).
Recommended storage temperature: ambient (5–35 °C). Avoid direct sunlight and heat sources.
Use corrosion-resistant materials for tanks/piping (e.g., HDPE, FRP, lined steel) for acidic solutions.
Shelf life: Typically 12 months (solid) / 6–12 months (liquid) in unopened original packaging; verify per COA/SDS.

Transport Information

UN Number: Not applicable
Regulatory Status: Generally not classified as a dangerous good under ADR/RID, IMDG, IATA (check regional rules and product grade).
Transport Advice: Keep dry; protect from damage and contamination. Segregate from alkalis.

Spill & Disposal

Avoid dust formation; contain and collect spills with non-combustible absorbent (for liquid) or vacuum/sweep (for solid).
Neutralize acidic residues with suitable alkali (e.g., sodium carbonate) if appropriate; prevent entry into waterways.
Dispose of in accordance with local/regional regulations; consult the latest SDS.

Compliance note: Classification may vary by concentration and regional regulation. Always refer to the latest SDS/COA issued by Aure Chemical for your specific grade and lot.