1 | Description | White crystalline powder. Has a saline taste. | Colorless, cubic crystals or white crystalline powder. Has a saline taste. |
2 | Solubility | Passes | Freely soluble in water; soluble in glycerin and slightly soluble in alcohol. |
3 | Identification A (Sodium) | Complies | Dense precipitate should form |
4 | Identification B (Chloride) | Complies | The precipitate dissolves easily with the possible exception of few large particles which dissolves slowly |
5 | Assay (on dried basis) | 99.9% | 99.0% -100.5% |
6 | Arsenic (As) | Less than 1 ppm | 1 ppm max |
7 | Barium(Ba) | Passes | Any opalescence in the test solution should not more intense than that in the reference solution |
8 | Ferrocyanide[Fe(CN6)] | Passes | No blue color should develope in 10 min. |
9 | Iodide(I) | Passes | No blue color should observe |
10 | Iron (Fe) | Less than 2ppm | 2ppm max |
11 | Bromide (Br) | Less than 100ppm | 100ppm max |
12 | Phosphate (PO4) | Less than 25ppm | 25ppm max |
13 | Magnesium and alkaline earth metals | Less than 100 ppm | NMT 100 ppm, calculated as Ca |
14 | Nitrite (NO2) | 0.005 | Absorbance should not be more than 0.01 |
15 | Sulfate (SO4) | Less than 200ppm | 200ppm max |
16 | Appearance of Solution | Passes | Clear and colorless solution |
17 | Acidity & alkalinity | Passes | NMT 0.5ml of 0.01N hydrochloric acid or 0.01N sodium hydroxide should require to change the color of this solution. |
18 | Loss on drying,105°C | 0.3% | NMT 0.5% |