Polyacrylamide is called PAM for short.There are four types of PAM, anionic polyacrylamide,
cationic, nonionic (NPAM),and zwitterionic .Polyacrylamide is a polymer formed from acrylamide
subunits,and it is highly water-absorbent.

Specification

Item	Anionic	Cationic	Nonionic	Zwitterion
appearance	white granular	White granular	white granular	white granular
solid content >	90%	90%	90%	90%
Molecular Weight	3-20million	3-15million	3-15million	3-15million
Ionic degree(%)	20-30	5-60	0-3	any proportion
water-insoble content	<0.1%	<0.1%	<0.1%	<0.1%
Dissolution time(min)	<40	<90	<60	<90