Carboximethyl Cellulose Sodiumis(CMC) referred to as CMC-Na, white to light yellow powder, granular or fibrous substance, strong hygroscopic, easily soluble in water, in neutral or alkaline, the solution is a high viscosity liquid. Stable for drugs, light and heat. However, the heat is limited to 80 ° C, and the long-term heating above 80 ° C reduces the viscosity and is insoluble in water. It is widely used in petroleum industry digging mud treatment agent, synthetic detergent, organic washing aid, textile printing and dyeing sizing agent, daily chemical products water-soluble viscosifier, pharmaceutical industry viscosifier and emulsifier, food industry thickener, ceramic industry adhesive, industrial paste, paper industry sizing agent and so on.