Surface:Free-moving powder The 10% aqueous solution color is brown
Dry-base content,%:≥ 90.0
Water-insoluble substances,%:≤ 10.0
Turbidity point salinity (in CL-), g/l:≥ 100
Apapparent viscosity, MPa.s:≤ 18-20
High temperature and high pre ssure filtration:≤ 20