Carboxyl Methyl Cellulose CMC Uses: in the mining, oil and gas drilling mud stabilizer; in the textile industry, it can be a substitute starch for sizing warp; in the paper industry, it can be added to paper pulp to increase the strength of oil and finely ground; In the pharmaceutical industry, can be used as creams, ointment base materials. Molecular Formula :[C6H7O2(OH)2CH2COONa]n Reaction Principle First step: Alkalization :[C6H7O2(OH) 3] n + nNaOH→[C6H7O2(OH) 2ONa ] n + nH2O Then : Etherification: [C6H7O2(OH) 2ONa ] n + nClCH2COONa →[C6H7O2(OH) 2OCH2COONa ] n + nNaCl