Sodium Carboxy Methyl Cellulose is one of the most significant byproducts of cellulose ethers, a type of cellulose derivative with an ether structure that is created through natural cellulose modification. This is a sodium salt of the cellulose carboxymethyl ether that dissolves in water and creates a transparent colloidal solution. Sodium Carboxy Methyl Cellulose is a hygroscopic substance that is typically discovered in lab settings.