For procurement managers and R&D scientists in the water treatment sector, understanding the efficacy and sourcing of key chemical components is paramount. PolyDADMAC, identified by CAS No. 26062-79-3, stands out as a highly effective cationic polymer flocculant. Its primary application lies in purifying both tap water and sewage, particularly in scenarios involving high turbidity raw water often encountered during river flood seasons. This article aims to provide a detailed insight into its properties, applications, and why sourcing from a reputable manufacturer in China is a strategic advantage.

What is PolyDADMAC and How Does it Work?
PolyDADMAC, or Poly(diallyldimethylammonium chloride), is a water-soluble polymer that carries a strong positive charge. In water treatment, this cationic nature allows it to neutralize the negative charges of suspended particles such as clay, silica, microorganisms, and hydrated metal oxides. Upon neutralization, these destabilized particles aggregate into larger flocs, a process known as coagulation. These larger flocs are then more easily removed through sedimentation or filtration, leading to clearer and cleaner water. Its effectiveness is particularly noted in treating raw water with high turbidity, where conventional treatments might struggle.

Key Applications in Water Purification
The versatility of PolyDADMAC makes it an indispensable chemical auxiliary. Its primary uses include:

  • Tap Water Treatment: Ensuring the safety and clarity of drinking water by efficiently removing suspended solids and colloidal matter.
  • Sewage Treatment: Enhancing the removal of pollutants in municipal and industrial wastewater, contributing to environmental protection.
  • Industrial Circulating Water Treatment: Preventing scaling and fouling in industrial water systems, thereby maintaining operational efficiency.
  • Paper Making: It can also be used as a retention aid and drainage aid in the paper industry.

When considering how to buy PolyDADMAC, understanding the required specifications is crucial. Key parameters include solid content (typically 49-51%), pH range (3.0-7.0), and viscosity (e.g., 8000-12000 cps at 25°C). These specifications ensure the product's optimal performance in different water treatment processes. For procurement managers, securing a consistent supply of high-purity PolyDADMAC is essential for uninterrupted operations.

Sourcing and Purchasing Considerations
When looking to purchase PolyDADMAC, partnering with an experienced manufacturer and supplier is key to ensuring quality and competitive pricing. Companies in China have emerged as significant players in the global chemical supply chain, offering high-quality products with robust manufacturing capabilities. When inquiring about price, it is advisable to specify the required tonnage, as bulk purchases often come with significant discounts. For instance, pricing can vary from US$1,000.00 per ton for smaller quantities (1-9 tons) to US$900.00 per ton for larger orders (20+ tons).

Choosing a supplier with relevant certifications, such as ISO9001:2015, and a proven track record in export (over 10 years) provides added assurance of product quality and reliable service. Furthermore, many manufacturers offer samples, allowing R&D scientists to test the product's performance in their specific applications before committing to large orders. This due diligence ensures that you buy the most suitable PolyDADMAC for your needs.

In conclusion, PolyDADMAC is a vital component for any advanced water treatment strategy. By understanding its applications and carefully selecting a supplier, businesses can secure a cost-effective and high-performance solution. If you are looking to buy PolyDADMAC polymer from a reliable manufacturer, exploring options from leading Chinese chemical suppliers is a worthwhile endeavor.