CASR |
: | 7447-40-7 |
Molecular Formula |
: | KCl |
Molecular Weight |
: | 74.56 |
| Specifications | |
|---|---|
| Appearance: | Colorless, elongated, prismatic, or cubical crystals or white, granular or crystalline powder. Stable in air. Its solutions are neutral to litmus. |
| Solubility: | Freely soluble in water, and even more soluble in boiling water; practically insoluble in anhydrous ethanol. |
| Identification (Chloride a): | A white curdled precipitate which dissolves easily in ammonia should form. |
| Identification (Chloride b): | The paper should turn violet-red. |
| Identification (Potassium a): | A white crystalline precipitate should form. |
| Identification (Potassium b): | A yellow or orange-yellow precipitate should form immediately. |
| Identification (Potassium): | A white crystalline precipitate that soluble in 6N ammonium hydroxide and solutions of alkali hydroxides and carbonates should form. |
| Appearance of solution: | Clear and colorless solution. |
| Acidity & alkalinity (1): | Not more than 0.5ml of 0.01M hydrochloric acid or of 0.01M sodium hydroxide should require to change the color of indicator. |
| Acidity & alkalinity (2): | A pink color should produce. |
| Bromides: | NMT 0.01% |
| Iodide(I) (1): | The substance should not show blue color. |
| Iodide(I) (2): | NMT 0.005%. |
| Sulfates: | NMT 300ppm |
| Barium(Ba): | Any opalescence in the solution should not be more intense than reference solution |
| Iron (Fe): | NMT 20ppm |
| Magnesium and alkaline earth metals: | NMT 200ppm (as Ca) |
| Calcium(Ca)&Magnesium(Mg): | No turbidity should produce within 5 min. |
| Loss on drying,105°C: | NMT 1.0% |
| Assay (on dried basis): | 99.0% to 100.5% |
| Sodium (Na) (1): | Sample solution tested on a platinum wire does not impart a pronounced yellow color to a nonluminous flame. |
