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在一定温度下的一个化合物在其一溶剂中的溶解度是固定的。所以有些溶解度很小的化合物在日常生活上或者在工业上,给我们带来了许许多多的困难,使我们遭受很多不方便。例如D.D.T.就不能溶解在水里面,而必要溶解在煤油里面。又如在兽医中需要20%的葡萄糖钙水溶液,可是葡萄糖钙的溶解度没有那么大。再如麻黄素在水里的溶解度很小,在工业上从麻黄浸出非常困难。每个人都希望解决这个问题。化学工作者们必须起来向低溶解度作斗争。怎样能加溶解度呢?选择适当的溶剂和适当的温度是最普通的办法。但是如果在一定的溶剂和一定的温度下,要增加其溶解度怎么办呢?这
The solubility of a compound at a certain temperature in a solvent is fixed. Therefore, some compounds with little solubility bring us many difficulties in our daily life or in industry, which causes us a lot of inconvenience. For example, D.D.T. can not dissolve in water, but need to be dissolved in kerosene. Another example is the veterinarian in need of 20% aqueous solution of glucose calcium, but the solubility of calcium glucose is not so big. Another example is the small solubility of ephedrine in water, in the industrial leaching from ephedra is very difficult. Everyone wants to solve this problem. Chemical workers must rise to fight low solubility. How to add solubility? Select the appropriate solvent and the appropriate temperature is the most common way. But if in a certain solvent and a certain temperature, to increase the solubility of how to do? This