Carmellose Sodium BP
Carboxymethyl cellulose (CMC) or cellulose gum or tylose powder 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.
It is used as a bulk laxative and as an emulsifier and thickener in cosmetics and pharmaceuticals and as a stabilizer for reagents.
CAS No.: 9004-32-4
|Characters||It occurs as a white or almost white, granular powder, hygroscopic after drying|
(a) Specified test. A blue, cotton-like precipitate is formed.
(b) Specified test. No precipitate is formed.
(c) Specified Test. It gives reactions of sodium.
|Solubility||Practically insoluble in acetone, in ethanol and in toluene. It is easily dispersed in water giving colloidal solutions.|
|Appearance of solution||Solution is not more opalescent than reference suspension III and not more intensely colored than reference solution Y6|
|Apparent viscosity||Not less than 75 % and not more than 140 % of the value stated on the label.|
|Sodium glycollate||Not more than 0.4 %|
|Chlorides||Not more than 0.25 %|
|Heavy metals||Not more than 20 ppm|
|Loss on drying||Not more than 10.0 %|
|Sulfated ash||20.0 % to 33.3 %|
|Assay||Not less than 6.5 % and not more than 10.8 % of sodium (Na), calculated with reference to the dried substance.|
Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.
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We observe WHO Good manufacturing practice and Good laboratory practice.