Carmellose
Test
Specification
Characters
It occurs as a white or almost white, granular powder, hygroscopic after drying
IdentificationTest (A)Test (B)
Test (C)
(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
pH
Between 6.0-8.0
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 %
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.