Carboxymethyl Cellulose (CMC) Also known as Cellulose Gum What is Carboxymethyl Cellulose? Carboxymethyl cellulose (CMC) is a sodium salt derivative of cellulose. Unlike cellulose, it is water soluble and can function as a suspending agent, stabilizer, film former or thickening agent. CMC finds use in gluten-free baking by providing dough with viscosity [...]