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Carboxymethyl Cellulose (CMC)
CMC is a linear, long-chain, water-soluble, anionic modified polysaccharide. It is a derivative of cellulose formed by its reaction with alkali and chloroacetic acid. Its structure is presented in the figure. Purified CMC is a white to cream colored, tasteless, odorless and free-flowing powder. This latter characteristic is maintained only by adequate packaging, as the material readily absorbs atmospheric moisture.
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