1 | Appearance | White crystalline powder | White or almost white, crystalline powder or colourless crystals or white or almost white pearls. |
2 | Solubility | Passes | Freely soluble in water, practically insoluble in anhydrous ethanol. |
3 | Identification A (By Chemical test) | Complies | It gives reactions of chlorides. |
4 | Identification B (By Chemical test) | Complies | It gives the reactions of sodium |
5 | Appearance of Solution | Passes | Solution S is clear and colourless. |
6 | Acidity & alkalinity | Passes | Not more than 0.5ml of 0.01M hydrochloric acid or of 0.01M sodium hydroxide is required to change the colour of the indicator. |
7 | Bromide (Br) | NMT 100ppm | 100ppm max |
8 | Ferrocyanide[Fe(CN6)] | Passes | No blue colour is produced within 10 minutes. |
9 | Iodide(I) | Passes | The mixture show no blue colour. |
10 | Nitrite (NO2) | Complies | Not greater than 0.01 |
11 | Phosphate (PO4) | NMT 25ppm | 25ppm max |
12 | Sulphate (SO4) | NMT 200ppm | 200ppm max |
13 | Arsenic (As) | NMT 1ppm | 1ppm max |
14 | Barium(Ba) | Passes | Passes test. |
15 | Iron (Fe) | NMT 2ppm | 2ppm max |
16 | Magnesium and alkaline earth metals | NMT 100ppm | 100ppm max |
17 | Potassium (K) | NMT 500ppm | 500 ppm max. |
18 | Heavy metals | NMT 5ppm | 5ppm max |
19 | Loss on drying,105°C | 0.19% | 0.5% max |
20 | Bacterial endotoxins | Complies | Less than 5 IU/g |
21 | Assay (Dried substance) | 99.67% | 99.00% - 100.50% |