... and anion, the molecular weight is between 400-18,000,000, it looks like white ... with the temperature of more than 120 °C.Polyacrylamide 1.Classification:This product is divided ... mainly anion types, and this product mainly used for drilling petroleum, textiles, chemical engineering, coating, ... product exteral appeance:white granule powder ,PAM is a linear polymer ,soluble in water,its after dissolving ...