KimaCell® CMC FD7 sodium carboxymethyl cellulose (CMC-Na) is the most important ionic cellulose gum. Sodium carboxymethyl cellulose is usually an anionic polymer compound prepared by reacting natural cellulose with caustic alkali and monochloroacetic acid, with a molecular weight ranging from several thousand to millions. CMC-Na is white fibrous or granular powder, odorless, tasteless, hygroscopic, easy to disperse in water to form a transparent colloidal solution.CMC-Na is white to pale yellow powder, granular or fibrous substance, strong hygroscopicity, easily soluble in water, and the solution is high viscosity liquid when it is neutral or alkaline. Stable to medicines, light and heat.
|Chemical name||Sodium Carboxymethyl Cellulose|
|Synonym||Cellulose gum, Carboxymethyl Cellulose, derivative of cellulose, Carboxymethylcellulose sodium salt, Na CMC, Sodium cellulose glycolate, Sodium CMC|
|Product Grade||CMC FD7|
|Solubility||Water Soluble Cellulose ether|
|Physical form||White to off-white cellulose powder|
|Appearance||White to creamy, free flow odorless powder|
|Viscosity ( 1%, Brookfield, 25℃)||6-50 cps|
|Degree of Substitution||0.45-0.55|
|Purity (dry basis)||55-65%|
|Loss on drying (moisture)||Max. 8.0%|
|Particle size||Min.99.0% pass through 100 mesh|
KimaCell® CMC FD7 sodium carboxymethyl cellulose is widely used in detergents to prevent redeposition of dirt, the principle is that there is mutual electrostatic repulsion between the negatively charged dirt and the charged CMC molecules adsorbed on the fabric. In addition, CMC can also make the washed slurry or The soap effectively thickens and stabilizes the structure of the composition. The wetting of the detergent solution to the washed substrate and dirt and the penetration between the two interfaces; The surfactant in the cleaning agent emulsifies, solubilizes and disperses the oily dirt, separates the dirt from the solid surface, and disperses or emulsifies it in the washing medium (usually water); Prevent emulsified oily dirt and dispersed solid dirt from redepositing on the substrate surface. The washing process is a reversible process, and the dirt dispersed and suspended in the medium may also be redeposited on the solid surface. This process is called dirt redeposition.