Understanding Poly Aluminium Chloride: CAS Number and Uses

30, Jun. 2026

 

Understanding Poly Aluminium Chloride: CAS Number and Uses

For manufacturers, water treatment facilities, and researchers alike, the quest for effective and efficient chemicals to enhance processes is a constant challenge. One substance that has emerged as a reliable option in various applications is Poly Aluminium Chloride (PAC). With its proven efficacy in purifying water and treating wastewater, PAC is an indispensable product within numerous industries. To help you make informed decisions about its use, we’ll delve into the details of poly aluminium chloride, outlining its CAS number, applications, strengths, and maintenance tips.

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What is Poly Aluminium Chloride?

Poly Aluminium Chloride (PAC) is an inorganic compound formulated as a water-soluble aluminum compound. It is prepared by the neutralization of aluminum hydroxide with hydrochloric acid. The chemical formula for PAC may vary based on the specific formulation, but it generally contains polyaluminum species at its core. The CAS number for Poly Aluminium Chloride is 1327-41-9, which is essential for identifying and differentiating this chemical in databases and regulatory documents.

Applications of Poly Aluminium Chloride

PAC is prominently known for its wide spectrum of uses across different sectors. Here are some key applications:

  • Water Treatment: PAC is primarily used in municipal and industrial water treatment processes. Its high efficiency in coagulation makes it effective in removing impurities, turbidity, and pathogens from water.

  • Wastewater Treatment: Additionally, PAC is widely employed in the treatment of wastewater. It facilitates the settling of solids in sewage treatment, ensuring that effluents meet environmental standards before discharge.

  • Papermaking: The pulp and paper industry utilizes PAC as a sizing agent, helping improve the quality and printability of paper products.

  • Food Processing: In the food industry, PAC is sometimes used for clarification processes, such as in the production of juices and beverages.

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Strengths and Weaknesses of Poly Aluminium Chloride

While PAC is celebrated for its effectiveness, it is important to assess both its advantages and limitations.

Strengths:

  • High Efficiency: PAC works effectively at a wide range of pH levels and temperatures, making it versatile.
  • Rapid Settling: It promotes quick sedimentation of solids, enhancing the filtration processes in water treatment.
  • Low Dosage Requirement: Considerably less PAC is needed compared to traditional coagulants like aluminum sulfate, leading to cost savings.

Weaknesses:

  • Aluminum Content: Some concerns exist regarding the presence of aluminum, as excessive exposure may pose health risks.
  • Potential for Overdose: An incorrect dosage can lead to poor water quality if not carefully monitored.

Comparisons: Poly Aluminium Chloride vs. Aluminum Sulfate

In the landscape of coagulants, PAC often finds itself compared to aluminum sulfate. Here’s how they stack up against each other:

  • Dosage: PAC generally requires a lower dosage compared to aluminum sulfate to achieve similar results.
  • Settling Speed: As mentioned, PAC offers faster settling times, which translates to improved efficiency in water clarification processes.
  • pH Range: PAC maintains efficacy across a wider pH range than aluminum sulfate, making it suitable for varied water conditions.

Practical Tips for Using Poly Aluminium Chloride

Integrating PAC into your processes can yield excellent results, but here are some maintenance and practical tips:

  • Proper Storage: Store PAC in a cool, dry place away from direct sunlight to maintain its chemical stability.
  • Monitoring Water Quality: Regularly test water quality adjustments to ensure optimal dosing of PAC, as both under-dosing and over-dosing can affect the purification process.
  • Employee Training: Ensure personnel handling PAC are trained in its use and aware of potential hazards to promote safety and effectiveness.

Conclusion: Key Takeaways on Poly Aluminium Chloride

Poly Aluminium Chloride, with its CAS number 1327-41-9, serves as a versatile and effective agent for various applications, chiefly in water treatment and wastewater management. Understanding its strengths allows businesses and facilities to optimize their processes while being mindful of its limitations. Armed with this comprehensive knowledge, stakeholders can effectively harness the benefits of PAC, ensuring cleaner water and more efficient operations. Whether you’re looking to enhance your water purification processes or exploring alternatives for coagulation, PAC stands out as a high-value solution.

By considering these insights, not only can you improve operational efficiency, but you can also ensure compliance with environmental standards, providing safer outcomes for communities and ecosystems alike.

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