1 | Appearance/Description | White crystalline powder. Has a saline taste. | Colorless, cubic crystals or white crystals or crystalline powder. Has a saline taste. |
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 | A white curdled precipitate should form which insoluble in nitric acid but soluble in slight excess of 6N ammonia hydroxide |
5 | Appearance of Solution | Complies | Clear and colorless solution |
6 | Assay (Dried basis) | 99.8% | 99.0% -100.5% of NaCl |
7 | Arsenic (As) | Less than 1ppm | 1 ppm max |
8 | Barium(Ba) | Complies | Any opalescence in the test solution should not more intense than that in the reference solution |
9 | Ferrocyanide[Fe(CN6)] | Complies | No blue color should develop in 10 min. |
10 | Iodide(I) | Complies | No blue color should observe in the mixture |
11 | Iron (Fe) | Less than 2ppm | 2ppm max |
12 | Bromide (Br) | Less than 100ppm | 100ppm max |
13 | Phosphate (PO4) | Less than 25ppm | 25ppm max |
14 | Magnesium and alkaline earth metals | 40ppm | NMT 100 ppm, calculated as Ca |
15 | Nitrite (NO2) | 0.004 | Absorbance should not be more than 0.01 at 354 nm |
16 | Sulphate (SO4) | Less than 200ppm | 200ppm max |
17 | 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. |
18 | Loss on drying,105°C | 0.3% | NMT 0.5% |