Carboxymethyl cellulose (CMC) or cellulose gum is a cellulose derivative with carboxymethyl groups (-CH2-COOH) bound to some of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone. It is often used as its sodium salt, sodium carboxymethyl cellulose.
As a food additive, Carboxymethyl cellulose (CMC) has E number E466.In laundry detergents it is used as a soil suspension polymer designed to deposit onto cotton and other cellulosic fabrics creating a negatively charged barrier to soils in the wash solution. CMC is used as a lubricant in non-volatile eye drops.Aqueous solutions CMC have also been used to disperse carbon nanotubes. It is thought that the long CMC molecules wrap around the nanotubes, allowing them to be dispersed in water.This practice is limited to the fatigue testing of axial unnotched and notched specimens subjected to a constant amplitude, periodic forcing function in air at room temperature.
Human studies have shown that about 90% of the compound is recovered from the feces The Select Committee on GRAS Substances concludes that, there is no evidence in the available information on sodium carboxymethyl cellulose that demonstrates, reasonable grounds to suspect, a hazard to the public when it is used at levels that are now current or that might reasonably be expected in future.
CMC is used in food additives as a viscosity modifier or thickener, and to stabilize emulsions in various products including ice cream.It is used primarily because it has high viscosity, is non-toxic, and is non-allergenic. In laundry detergents it is used as a soil suspension polymer designed to deposit onto cotton and other cellulosic fabrics creating a negatively charged barrier to soils in the wash solution.
Other products: Konjac Gum Sodium Alginate Aspartame
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