1 | Appearance/Description | White crystalline powder, Has a saline taste. | Colorless, cubic crystals or white crystals or crystalline powder. Has a saline taste.Free from visible extraneous matter |
2 | Solubility | Complies | Freely soluble in water; and slightly more soluble in boiling water; soluble in glycerin; slightly soluble in alcohol. Practically insoluble in anhydrous ethanol |
3 | Identification(Sodium) | Complies | Dense white precipitate should form. |
4 | Identification (Chloride) | Complies | The precipitate dissolves easily with the possible exception of a few large particles, which dissolve more slowly |
5 | Appearance of solution | Complies | Clear and colorless solution |
6 | Identification (Chemical test 1) | Complies | A filter paper moistened with diphenylcarbazide solution should turn violet-red |
7 | Identification (Chemical test 2) | Passes | No precipitate should form |
8 | Assay (Dried basis) | 99.8% | 99.0% -100.5% |
9 | Arsenic | Less than 1 ppm | NMT 1 ppm |
10 | Barium(Ba) | Complies | Any opalescence in the test solution should not more intense than that in the reference solution |
11 | Ferrocyanide[Fe(CN6)] | Complies | No blue color should develop in 10 min. |
12 | Iodide(I) | Complies | No blue color should observe in the mixture |
13 | Iron (Fe) | Not detected | NMT 2ppm |
14 | Bromide (Br) | Less than 100ppm | NMT 100ppm |
15 | Phosphate (PO4) | Less than 25ppm | NMT 25ppm |
16 | Magnesium and alkaline earth metals | Less than 100ppm | NMT 100 ppm, calculated as Ca |
17 | Nitrites | 0.003 | Absorbance should not be more than 0.01 at 354 nm |
18 | Sulphate | Less than 200ppm | NMT 200ppm |
19 | Acidity & alkalinity | Complies | NMT 0.5ml of 0.01N hydrochloric acid or 0.01N sodium hydroxide should require to change the color of this solution |
20 | Loss on drying,105°C | 0.2% | NMT 0.5% |
21 | Calcium | Complies | No opalescence should produce within 5 minutes. |
22 | Potassium (K) | Not detected | NMT 0.02% |
23 | Calcium & Magnesium | 20 ppm | NMT 50 ppm, calculated as Ca |
24 | Magnesium (Mg) | Not detected | NMT 0.001% |
25 | Aluminium (Al) | Not detected | NMT 0.2 ppm |