Polyacrylamide (Polyscrylamide) called PAM, commonly known as flocculants or coagulant, the formula: + CH2-CHn is a linear polymer, the molecular weight between 400-2000 million, the appearance of the solid product is white or slightly yellow powder , a colorless viscous gel-like liquid, soluble in water temperature exceeds 120 ℃, decomposition. 
 Polyacrylamide molecule has a positive group (-CONH2), dispersed in solution with adsorption and bridging of particulates, there is a strong flocculation, it is widely used in water treatment and metallurgy, paper, petroleum, chemical , textiles, mineral processing and other fields. 
 PAM is divided into: anionic, cationic and nonionic. 
 Anionic water is mainly used for living and production, industrial and urban sewage treatment. Also apply during the preparation of alumina flocculation of red mud and mud-liquid separation. Cationic high molecular weight, mainly for the water suspension and flocculation of suspended matter cloud precipitation, the acid solution containing acid and organic flocculation of suspended matter cloud is very difficult. In this case, cationic polyacrylamide can be effective for flocculation and sedimentation, indicating outstanding performance. 0.1-0.2% in water use patterns, must be prepared PH ≤ 7 of the water, dubbed after the extremely dilute solution hydrolysis. Should vary with the day spent with the use or not suitable for prolonged storage. 

 Features: 
 Polyacrylamide (referred to as PAM) is a linear polymer, soluble in water, the solution almost transparent viscous liquid, a non-dangerous goods, non-toxic, non-corrosive. Solid PAM has moisture absorption, flocculation, adhesion, reduction in resistance, thickening, while good stability. 
 Uses: 
 Polyacrylamide molecule has a positive gene (-CONH2), can be dispersed in solution in the adsorption and bridging of particulates, there is a strong flocculation, it is widely used in water treatment and power, mining, coal preparation, asbestos products, petrochemicals, paper, textile, sugar, medicine, environmental protection