... tension: 2% water solution is 42-56dyn/cm.7, Solubility: soluble in water and some organic solvents, as appropriate proportion ... affected by PH value.8, HPMC with methoxyl content decreased, the gel point increased, water solubility decreased, surface activity also decreased ... also used in ceramic industry as adhesives. Pharm grade HPMC is widely used as multi-purpose pharmaceutical excipients, can be ...