A hydroxypropyl methyl cellulose (HPMC). This product was developed for cement-based applications, like cement-based tile adhesives or mortars used in Exterior Thermal Insulation Systems. 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.This product has a lower product carbon footprint version available under Decarbia™ Dow brand. For this case the PCF reduction is -18% coming from renewable energy. Please do not hesitate to contact us to know more.