HPMC K4M and Hydroxyethyl Cellulose (HEC), and HEMC, for dental, food, cosmetics, pharma, for tile adhesive application HPMC K4M and Hydroxyethyl Cellulose (HEC), and HEMC, for dental, food, cosmetics, ... pharma, for tile adhesive applicationHEC,hydroxyethyl cellulose 1.degree of substitution: 1 ...