Factors Affecting the Viscosity of Hydroxypropyl Methyl Cellulose
Factors Affecting the Viscosity of Hydroxypropyl Methyl Cellulose Hydroxypropyl methyl cellulose (HPMC) is a nonionic water-soluble mixed ether of cellulose. Appearance is white to light yellow powder or granules, tasteless, odorless, non-toxic, chemically stable product, soluble in water to form a smooth and transparent viscous solution. 1. The relationship between viscosity and concentration The viscosity