CASR |
: | 7447-40-7 |
Molecular Formula |
: | KCl |
Molecular Weight |
: | 74.56 |
Specifications | |
---|---|
Appearance: | A white or almost white, crystalline powder or colorless crystals. |
Solubility: | Freely soluble in water, practically insoluble in anhydrous ethanol. |
Identification A (Chloride a): | A white curdled precipitate which dissolves easily in ammonia should form. |
Identification A (Chloride b): | The paper should turn violet-red. |
Identification B (Potassium a): | A white crystalline precipitate should form. |
Identification B (Potassium b): | A yellow or orange-yellow precipitate should form immediately. |
Appearance of solution: | Clear and colorless solution. |
Acidity & alkalinity: | Not more than 0.5ml of 0.01M hydrochloric acid or of 0.01M sodium hydroxide should require to change the colour of indicator. |
Bromides: | NMT 0.1% |
Iodides (I): | The substance should not show blue colour. |
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) |
Loss on drying,105°C: | NMT 1.0% |
Assay (on dried basis): | 99.0% to 101.0% |