[molecular formula] (CH2-CHCONH2)n(not ion type) (CH2-CHCONH2) n(CH2-CHCOOHa) m(anion type English name] polyacrylamidepolyacrylamide rief name PAM, be so called an of flocculant or coagulate, divide cation, anion type, the molecular weight is between 400-18,000,000, product external appearance is white or take yellow powder slightly, liquid for have no the color glue a dense gum body a form, is ...