HEC, having functions of thickening, bonding, emulsifying, dispersing, stabilizing, water retaining, and film forming. HEC:Technical indexTable 1. ItemSpecificationViscosity See Table ... 0-8.5AppearanceGranule or powderTable 2. Viscosity Specification of HEC Solution TypeSolution Viscosity (Brookfield at 25°C,cps ... be adjusted according to the requirements of the customers. Hydroxyethyl Cellulose HEC