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Chongqing Lihong Fine Chemicals CMC-Na (Sodium Carboxymethyl Cellulose) is customarily shorten form CMC, the abbreviation is CMC. CMC is a representative cellulose ethers, its sodium salt used widely in industry, CMC belongs to anionic polymer electrolyte, besides CMC-Na, it has other salt, such as ammonium and aluminum salt. CMC sometimes can change to CMC acid. D.S, that is the average of the hydroxyl which reacts with substitute on each anhydrous glucose unit, when D.S is 1:00, its molecular formula is [C6H7O2(OH)2OCH2COONa]n,.