| Appearance | White or grayish white powder |
| Solubility | Practically insoluble in acetone, in anhydrous ethanol and in toluene |
| Identification | |
| Test - A | Settles as a blue fibrous mass |
| Test - B | A reddish-violet colour develops at the interface |
| Test - C | Gives reaction of sodium salt. A portion of mixture of croscarmellose sodium with water, prepared as directed in identification B, imparts and intense yellow color to a non luminous flame. |
| pH of Solution (1.0% w/v CO2 free water) | Between 5.0 to 7.0 |
| Sodium Chloride & Sodium Glycolate (Calculated on dried basis) | Maximum 0.5% w/w |
| Water Soluble Substances | Maximum 10.0% |
| Heavy metals | Maximum 20 ppm (BP) / 10 ppm (USP) |
| Loss on drying (at 105⁰ C for 6 hours) | Maximum 10.0% |
|
Sulphate Ash (As per BP) Residue on Ignition (As per USP) |
Between 14.0 to 28.0% |
| Settling Volume | Between 10.0 to 30.0 ml. |
| Degree of Substitution (Calculates on dried basis) | Between 0.60 to 0.85 |
| Residual Solvents (Methanol) | Maximum 3000 ppm |
| Particle Size | Not less than 95% passing through 100 Mesh Not less than 65% passing through 150 Mesh |