Wuxi BS Water Treatment Chemicals Co., Ltd.

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Cationic Polyacrylamide (CPAM) Suppliers and Factory in China for Effective Decolorization and Impurity Removal

  • Chemical Name Polyacrylamide
  • CAS No. 9003-05-8
  • HS Code 38260000
  • Molecular formula (C₃H₅NO)ₙ

Product Form

Cationic Polyacrylamide (CPAM) is a highly effective water-soluble polymer characterized by its positively charged molecular chain (-NH₃⁺). As a leading product from China, this polymer works through the charge adsorption + net capture mechanism, allowing it to interact seamlessly with negatively charged suspended solids such as clay and colloids, as well as dissolved organic matter including humic acid and negatively charged pollutants like dye anions. This interaction promotes rapid aggregation and removal of fine particles, making CPAM an essential tool for decolorization and impurity removal in various industrial applications, particularly in printing and dyeing, electroplating, and chemical engineering. As a trusted supplier and factory of Cationic Polyacrylamide, we guarantee high-quality products tailored to meet your water treatment needs.

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Product Details

Core Features

• Adjustable Ionicity · Precise Adaptation: Ionicity (cationic charge density) ranges from 10% to 80% (adjustable), customizable according to the negative charge intensity of wastewater:

￮ Low ionicity (10%–30%): Suitable for low turbidity, weakly negatively charged wastewater (such as surface water pretreatment).

￮ High ionic degree (50%–80%): Suitable for wastewater with high negative charge and fine suspended solids (such as printing and dyeing wastewater, electroplating wastewater).

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• Fast dissolution, low residue: The dissolution time of powder PAM ≤ 60 minutes (at room temperature), after dissolution, the flocs are large and settle quickly (settling speed is 25%–40% faster than conventional products), and it works better when used in combination with PAC. Water insoluble matter ≤ 0.5%.

• Strong Tolerance: Resistant to acid and alkali (pH 3–12), temperature-resistant (−5°C to 90°C), suitable for multiple scenarios such as mine wastewater, papermaking black liquor, printing and dyeing wastewater, and oilfield reinjection water.

Application Area
  • Municipal sewage treatment: Accelerate sludge dewatering and improve purification efficiency.
  • Industrial wastewater treatment: Treatment of high-concentration wastewater from steel mills, electroplating plants, paper mills, etc.
  • Oilfield exploitation: Improve oil recovery and adjust water injection viscosity.
  • Paper and Textile: Enhance paper strength and reduce fiber loss.
  • Soil improvement: Prevent soil erosion and enhance soil water retention.
Application 3
Application 1
Application 5
Application 2
Packaging and Storage

• Solid powder: 25kg woven bag lined with plastic bag / 1 ton jumbo bag (customizable English / customer logo packaging available).

• Storage Conditions: Store in a cool, dry place (temperature ≤ 35°C), avoid direct sunlight; the shelf life of the solid is 2 years (unopened).

PAM English packagingSolid pallet
Frequently Asked Questions
Q What is the ionicity range of your cationic PAM, and how do I choose the right grade?
Our cationic PAM offers an adjustable ionicity range from 10% to 80%. For low turbidity or weakly negatively charged wastewater (e.g., surface water pretreatment), a low ionicity grade of 10%–30% is recommended. For wastewater with high negative charge and fine suspended solids — such as printing and dyeing or electroplating wastewater — a high ionic degree of 50%–80% is more effective. We can customize the grade based on your specific wastewater characteristics.
Q How long does the powder PAM take to dissolve, and what is the recommended usage method?
The dissolution time for powder PAM is ≤ 60 minutes at room temperature. For best results, dissolve the powder in clean water while stirring continuously until a uniform solution is formed. It is also recommended to use cationic PAM in combination with PAC (Polyaluminum Chloride), as this combination significantly enhances floc formation, resulting in larger flocs and a settling speed 25%–40% faster than conventional products.
Q Is your PAM suitable for extreme pH or temperature conditions?
Yes. Our cationic PAM demonstrates strong tolerance across a wide pH range of 3–12 (resistant to both acid and alkali) and is effective in temperatures from −5°C to 90°C. This makes it suitable for demanding industrial environments including mine wastewater, papermaking black liquor, printing and dyeing wastewater, and oilfield reinjection water.
Q What industries and applications is cationic PAM used for?
Cationic PAM has broad applications across multiple industries, including: municipal sewage treatment (sludge dewatering and purification), industrial wastewater treatment (steel mills, electroplating plants, paper mills), oilfield exploitation (improving oil recovery and water injection viscosity), paper and textile manufacturing (enhancing paper strength and reducing fiber loss), and agricultural soil improvement (preventing erosion and improving water retention).
Q What packaging options are available, and can you provide custom labeling?
We offer solid powder PAM in 25kg woven bags (lined with inner plastic bags) as well as 1-ton jumbo bags for bulk orders. Custom packaging is available, including English-language labeling and customer logo branding, to meet the requirements of international buyers and distributors.
Q What are the storage requirements and shelf life of cationic PAM?
Cationic PAM should be stored in a cool, dry environment with a temperature not exceeding 35°C. Direct sunlight should be avoided to prevent degradation. When stored in its original, unopened packaging under these conditions, the shelf life of the solid powder is 2 years.