Moq | Ton |
Potassium Chloride USPKCl 74.55
Assayâ Potassium Chloride contains not less than 99.0 percent and not more than 100.5 percent of KCl, calculated on the dried basis.Packaging and storageâ Preserve in well-closed containers.Labelingâ Where intended for use in hem dialysis, it is so labeled.Identificationâ A solution (1 in 20) responds to the tests for Potassium and for Chloride.Acidity or alkalinityâ To a solution of 5.0 g in 50 mL of carbon dioxideâfree water add 3 drops of nolhalein TS: no pink color is produced. Then add 0.30 mL of 0.020 N sodium hydroxide: a pink color is produced.Loss on drying â Dry it at 105 for 2 hours: it loses not more than 1.0% of its weight.Iodide or bromideâIODIDEâStandard stock solutionâ Transfer an accurately weighed quantity, about 41 mg, of potassium iodide to a 25-mL volumetric flask. Dissolve in and dilute with water to volume, and mix.Standard solutionâ Dilute 1.0 mL of Standard stock solution with water to 25 mL, and mix. Dilute 2.0 mL of this solution with water to 8 mL, and proceed as directed for Test solution beginning with âAdd 1 mL each of chloroformâ.Test solutionâ Dissolve 2 g in 8 mL of water. Add 1 mL each of chloroform and diluted hydrochloric acid, then add 2 drops of a chloramine T solution (0.1 in 100), and shake gently. The violet color of the chloroform layer is not darker than that of a concomitantly prepared Standard solution: the limit is 0.005%.BROMIDEâStandard solutionâ Transfer an accurately weighed quantity, about 32 mg, of sodium bromide to a 25-mL volumetric flask. Dissolve in and dilute with water to volume, and mix. Dilute 2.0 mL of this solution with water to 8 mL, and proceed as directed for Test solution beginning with âAdd 1 mL each of chloroformâ.Test solutionâ Dissolve 2 g in 8 mL of water. Add 1 mL each of chloroform and diluted hydrochloric acid, then add 5 drops of a chloramine T solution (1 in 100), and shake gently. The brown color of the chloroform layer is not darker than that of a concomitantly prepared Standard solution: the limit is 0.1%.Aluminumâ where it is labeled as intended for use in hem dialysisâ Proceed as directed using 2.0 g of Potassium Chloride to prepare the Test Preparation: the limit is 1 µg per g.Calcium and magnesiumâ To 20 mL of a solution (1 in 100) add 2 mL each of 6 N ammonium hydroxide, ammonium oxalate TS, and dibasic sodium ste TS: no turbidity is produced within 5 minutes.Sodiumâ A solution (1 in 20), tested on a platinum impart a pronounced yellow color to a non-luminous flame.Heavy metalsâ Dissolve 2.0 g in 25 mL of water: the limit is 0.001%.Organic volatile impurities: meets the requirements.