Sodium carboxymethyl cellulose (CMC) Appearance 
 This product is cellulose carboxymethyl ether sodium salt, an anionic cellulose ether, white or milky white fibrous powder or granules, the density of 0.5-0.7 grams / cubic centimeter, almost odorless, tasteless, with moisture absorption. Easily dispersed in water into a transparent colloidal solution, the insoluble organic solvent such as ethanol. 1% aqueous solution pH of 6.5 to 8.5, when pH> 10 or <5, the slurry viscosity was significantly lower in the best performance at pH = 7. Heat-stable, the rapid increase in viscosity below 20 ℃, 45 ℃ when the change is slow, 80 ℃ heating over a long time variability may make it gel viscosity and performance degradation. Soluble in water, the solution transparent; very stable in alkaline solution, is easy with acid hydrolysis, PH value 2-3 when precipitation occurs, the case of multivalent metal salts can also precipitate reaction.