A modified hydroxyethyl methyl cellulose (HEMC). WALOCEL™ M 35-10 Cellulose Ether was developed for cement-based applications, like cement-based tile adhesives and substantially contributes to a successful formulation of the cementitious parts of an External Thermal Insulating System. Dow’s WALOCEL™ cellulose ether products are manufactured using cellulose from wood or cotton linter, resulting in an inherently bio-based additive with approximately over 78% bio-based carbon content.