what is sodium carboxymethyl cellulose used for
Sodium carboxymethyl cellulose (CMC) is a cellulose derivative, an ionic cellulose gum, and owing to its unique thickening, suspending, adhesion, and water retention properties, is widely used in various industrial fields.odium carboxymethyl cellulose is generally divided into 3 grades depending on the purity: the food high-purity grade (with a content more than 99.5%), the industrial grade (with a content more than 90%), and crude products (with a content more than 65%).