... %solution,NDJ-79 viscometer,25°C),mPa·s300 ~ 800800 ~ 1200300 ~ 800800 ~ 12001500 ~ 22001500 ~ 22001500 ~ 2200Chloride(as Cl-),%≤1.2≤1.2≤1.2≤1.2≤1 ... .2≤1.2≤1.2Acidviscosity ratio----≥0.82--Loss ondrying,%≤10 ... ≤10.0≤10.0≤10.0≤10.0≤10.0pH(1%solution,25°C)6.0 ~ 8.56.0 ~ 8.56.0 ...