HEC, having functions of thickening, bonding, emulsifying, dispersing, stabilizing, water retaining, and film forming. HEC:Technical indexTable 1. ItemSpecificationViscosity See Table 2Moisture,% ≤7PH in solution 6.0-8.5AppearanceGranule or powderTable 2. Viscosity Specification of HEC Solution TypeSolution Viscosity (Brookfield at 25°C,cps )1%2%5%H 40003400 - 5000--H 30002600 - 3300--H 20001500 ...