|
|
| Item | USP | CP |
|---|---|---|
| Identification | Conforms | - |
| Assay (Na) (%) | 6.5-9.5 | - |
| Viscosity (mPa.s) | ≤2% concentration 75%-140% ≥2% concentration 80%-120% |
75-140% (Viscosimeter of Brookfield type LV Model or equivalent, 25ºC) |
| pH | 6.5-8.5 | 6.5-8.0 |
| Clarity & colour of solution | - | Conforms |
| Loss on drying (%) | ≤10.0 | - |
| Chloride (%) | - | ≤0.25 |
| Sulfate (%) | - | ≤0.5 |
| Silicate (%) | - | ≤0.5 |
| Iron (%) | - | ≤0.016 |
| Arsenic (%) | - | ≤0.0003 |
| Sodium glycolate (%) | - | ≤0.4 |
