氯化钾溶液是电解质补充药。用于治疗低血钾症及洋地黄中毒引起的心律失常。氯化钾属无机盐类，其溶液久贮可被微生物污染而变混浊或产生絮状物而不可药用，采用羟苯乙酯为防腐剂可有效防止其被微生物污染。《中国医院制剂规范》将羟苯乙酯配成5％醇溶液，然后加到适量蒸馏水中 Potassium chloride solution is an electrolyte supplement. For the treatment of hypokalemia and digitalis poisoning caused by arrhythmia. Potassium chloride is an inorganic salt, the solution for a long time storage of microorganisms can become contaminated turbidity or flocculent and not medicinal, the use of hydroxyphenol as a preservative can be effectively prevented by microbial contamination. “Chinese hospital preparation specification” will be dubbed ethyl alcohol 5% alcohol solution, and then added to the amount of distilled water