Sodium carboxymethyl cellulose(CMC), known as Cellulose gum, is a high-polymer cellulose ether obtained by chemically modifying natural cellulose.CMC is white or milky white fibrous powder or granules, with a density of 0.5-0.7 g/cm3, almost odorless, tasteless, and hygroscopic. CMC-Na is white fibrous or granular powder, odorless, tasteless, hygroscopic. https://www.hpmcmanufacturer.com/product/carboxymethyl-cellulosecmc/