... in water 5. hydrolyzed degree 20-30 Partial Hydrolyzed Polyacrylamide PHPA for Drilling 1. PropertyPHPA is short for Partial Hydrolyzed Polyacrylamide ... [CH2ch] n, and molecular weight between 5 to 22 million. PHPA appears as white or colorless granule, viscous gellike, odorless, neutral ... weight16-20 million (for drilling)Hydrolyzed degree,%20-30PH7-14 phpa poly acrylamide