羧甲基纤维素钠

具有湿润性，可溶于水，在中性或微碱性时为高粘度液体。对化学药品、热、光稳定。无臭、无味。CMC是纤维素经羧甲基化而制得的聚合物，纯的羧甲基纤维素无实用价值，实际使用的是其钠盐。 CMC的最大用途是配制肥皂及合成洗涤剂，在重级清洁剂中大约添加1%的CMC，用以防止洗出的污物再沉淀于织物上。其次是用作石油工业钻井泥浆的悬浮稳定剂，在造纸工业中作添加剂可提高纸的纵向强度和平滑度，作涂料可提高纸的印刷可适应性，在食品工业中用作增稠剂、乳液稳定剂及冰淇淋的冰晶抑制剂；在纺织工业中用作浆剂、印染浆的增稠剂；在医药工业中可作针剂的乳化稳定剂、片剂的粘结剂和成膜剂；在化妆品中、陶瓷等生产中用作增稠剂。

application：

Carboxymethylcellulose sodium salt is used in drilling muds, in detergents as a soil-suspending agent, in resin emulsion paints, adhesives, printing inks, textile sizes and protective colloid. It acts as a stabilizer in foods. It is also employed in pharmaceuticals as a suspending agent and excipients for tablets. It is used as viscosity modifiers to stabilize the emulsions. It is used as a lubricant in artificial tears and it is used to characterize enzyme activity from endoglucanases.