... 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 ... according to the requirements of the customers. Hydroxyethyl Cellulose HEC