Potassium chloride Ph.Eur 5KG Go Back


: 7447-40-7

Molecular Formula

: KCl

Molecular Weight

: 74.56
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%
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