Viscosity (mPa.s, 2% solution, 20 oC) :5 - 200000 Ash, wt% :3.0 max Water, wt% :5.0max Hydroxypropyl methyl cellulose is a non-ionic cellulose ether polymer, according to the replacement level of substituent groups as well as the modification of the different levels have different solubility, surface activity, and with the role of thermal gelation the compatibility of other substances, thereby ...