1 | Appearance | White, crystalline powder. Stable in air. Its solutions are neutral to litmus. | Colorless, elongated, prismatic, or cubical crystals or white, granular or crystalline powder. Stable in air. Its solutions are neutral to litmus. |
2 | Solubility | Complies | Freely soluble in water, and even more soluble in boiling water; practically insoluble in anhydrous ethanol. |
3 | Identification (Chloride a) | Complies | A white curdled precipitate which dissolves easily in ammonia should form. |
4 | Identification (Chloride b) | Complies | The paper should turn violet-red. |
5 | Identification (Potassium a) | Complies | A white crystalline precipitate should form. |
6 | Identification (Potassium b) | Complies | A yellow or orange-yellow precipitate should form immediately. |
7 | Identification (Potassium) | Complies | A white crystalline precipitate that soluble in 6N ammonium hydroxide and solutions of alkali hydroxides and carbonates should form. |
8 | Appearance of solution | Complies | Clear and colorless solution. |
9 | Acidity & alkalinity (1) | Complies | Not more than 0.5ml of 0.01M hydrochloric acid or of 0.01M sodium hydroxide should require to change the color of indicator. |
10 | Acidity & alkalinity (2) | Complies | A pink color should produce. |
11 | Bromides | Less than 0.1% | NMT 0.1% |
12 | Iodide(I) (1) | Complies | The substance should not show blue color. |
13 | Iodide(I) (2) | Less than 0.005% | NMT 0.005%. |
14 | Sulfates | Less than 300ppm | NMT 300ppm |
15 | Barium(Ba) | Complies | Any opalescence in the solution should not be more intense than reference solution. |
16 | Iron (Fe) | Less than 20ppm | NMT 20ppm |
17 | Magnesium and alkaline earth metals | Less than 200ppm | NMT 200ppm (as Ca) |
18 | Calcium(Ca)&Magnesium(Mg) | Complies | No turbidity should produce within 5 min. |
19 | Loss on drying,105°C | 0.2% | NMT 1.0% |
20 | Assay (on dried basis) | 99.8% | 99.0% to 100.5% |
21 | Sodium (Na) (1) | Complies | Sample solution tested on a platinum wire does not impart a pronounced yellow color to a nonluminous flame. |
22 | Total aerobic microbial count | Less than 100 CFU/gm | NMT 100 CFU/gm |
23 | Total Yeast and mold count | Less than 10 CFU/gm | NMT 10 CFU/gm |
24 | Bacterial endotoxin test | Less than 2.5 EU/gm | NMT 2.5 EU/gm |