Physical Property: Polyacrylamide is soluble ,and insoluble in organic solvents. It presents high polymer electrolyte characteristics in neutral and alkaline mediums. It is sensitive to salt electrolyte, and can be cross-linked into an insoluble gel with the high chemical price metal ion. Description Polyacrylamide is a kind of soluble high molecular weight polymer or polyelectrolyte. Having several polar groups in the molecular chain, it can form bridge among particles by absorbing suspended solid particles in wastewater and condense particle into big flocs by neutralizing charges. Therefore, it can speed up sedimentation of particles in suspensions and excels in speeding up purification of solutions and promoting filtration and so on.