【摘要】 采用本实验室自制的苯基膦酰二氯(DCPPO),在常温下缓慢水解后两次重结晶制得苯基膦酸(C6H7O3P),为白色结晶状粉末。通过酸度、质谱、核磁、熔点分析对产物进行了标定。采用滴定法测定了305 K到345 K温度范围内苯基膦酸在水中的溶解度,并对其溶解度和温度进行了关联,得到了溶解度经验方程。溶解度的对数近似与温度的倒数成正比。更多还原

【Abstract】 Benzenephosphonic acid,a white crystal powder,was prepared by hydrolysis of benzenephosphonic dichloride(prepared in our laboratory of a purity of 98.1 % analyzed by The Chemical Industry Corporation of Japan) and twice recrystallization in distilled water.Solubility of benzenephosphonic acid in water from 305 k to 345 k were determined by titration method,and the solubility was correlated with temperature by an empirical equation.The logarithm of solubility is approximately proportional to the reciprocal of absolute temperature.更多还原