For procurement managers and R&D scientists in the water treatment sector, understanding the technical specifications of chemicals like Poly Aluminum Chloride (PAC) is crucial for effective sourcing and application. As a leading manufacturer and supplier of PAC, we aim to demystify these specifications, empowering you to make informed purchasing decisions. This guide focuses on key parameters such as Al2O3 content and basicity, and how they influence PAC's performance in water treatment.

Poly Aluminum Chloride, often abbreviated as PAC, is a complex inorganic polymer known for its excellent coagulating properties. Its effectiveness stems from the presence of polynuclear aluminum species that exhibit strong charge neutralization and bridging capabilities. When looking to buy PAC, you'll encounter various grades and specifications, primarily distinguished by their Aluminum Oxide (Al2O3) content and basicity.

The Al2O3 content is a direct measure of the active aluminum component in PAC. Higher Al2O3 content generally indicates a more concentrated and potent coagulant. For drinking water purification, PAC products typically range from 28% to 31% Al2O3. For industrial wastewater treatment, concentrations might vary depending on the nature of the pollutants. A supplier's product description, often including a CAS number like 1327-41-9, will clearly state the Al2O3 percentage. Knowing this figure is the first step in determining the dosage required for your specific water treatment needs.

Basicity is another critical parameter, defined as the molar ratio of hydroxyl groups to aluminum atoms in the PAC molecule. It influences the product's charge density and hydrolysis behavior. PAC with higher basicity (e.g., 75%-90%) is generally more stable and effective at lower doses, especially in treating cold water or water with low alkalinity. Conversely, lower basicity PAC might be suitable for specific applications or waters with different characteristics. A reputable manufacturer will clearly indicate the basicity range for their PAC products, such as our PAC-spray (bright yellow) with 75.0-90.0% basicity.

When sourcing PAC, particularly from suppliers in China, it's important to verify that the product conforms to relevant standards, like the Chinese national standard GB15892-2009 for drinking water applications. This standard specifies requirements for Al2O3 content, basicity, water insolubles, and pH. Our company adheres to these standards, ensuring that you receive a high-quality, reliable product every time.

Choosing the right PAC involves more than just looking at the price. It requires understanding how these specifications translate into performance for your particular application. We recommend reaching out to our expert team for a personalized consultation. As a trusted manufacturer and supplier, we can help you select the optimal PAC grade, provide a competitive price quote, and arrange for samples, ensuring your procurement process is seamless and efficient. Secure your supply of effective water treatment chemicals with confidence.