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临床用于消毒的呋喃林溶液通常为0.02%,因呋喃西林极微溶于水,溶解度为1∶4200,所用溶液浓度接近饱和,在配制时通常采用加热使其溶解。当气温较冷时易析出结晶,往往使溶液浓度明显降低。为此将0.02%的呋喃西林调配成1∶6000的浓度,即0.015%的溶液,未发现结晶析出的现象。由于溶液对光敏感,见光溶液色泽增深,应以避光。本文对常规条件下贮藏的呋喃西林溶液的稳定性进行观察。
The furanlin solution clinically used for disinfection is usually 0.02%. Because nitrofurazone is very slightly soluble in water and has a solubility of 1: 4200, the concentration of the solution used is nearly saturated, and it is usually heated to dissolve it when it is formulated. When the temperature is cold, easy to precipitate crystals, often make the solution concentration was significantly reduced. For this purpose 0.02% nitrofurazone was formulated at a concentration of 1: 6000, ie a 0.015% solution, and no crystallisation was observed. As the solution is light-sensitive, see the color of the solution darker, should be dark. In this paper, the stability of nitrofurazone solution stored under normal conditions was observed.