Using the laser monitoring technique to judge the solid-liquid solubility equilibrium terminal, the solid-liquid solubility data of abietic acid in methanol, ethanol, n-propanol and n-butanol were measured by dynamic method, and the λh equation, Wilson equation and empirical equation were used to correlate the solid-liquid solubility data in the temperature range from 282 K to 320 K. The results show that the solid-liquid solubilities of abietic acid in above four alocohol solvents increase with the increase of temperature and the solubilities of abietie acid are different in different solvents, the order is: n-butanol ＞n-propanol ＞ethanol ＞methanol. When using theλh equation, Wilson equation and empirical equation to correlate the solubility data of abietie acid, the maximum average relative deviations are 1.43％,1.19％ and 1.24％, respectively. The obtained experimental solubility data and their correlation can provide essential thermodynamic data for solvent selection of abietic acid crystallization.%采用激光监视技术判定平衡点,由动态法测定了枞酸在甲醇、无水乙醇、正丙醇、正丁醇中的固液溶解度,实验测定温度由282 K至320 K,用λh方程、Wilson方程、简化方程分别对溶解度实验数据进行关联.结果表明,枞酸在四种醇类溶剂中的溶解度均随温度的升高而增大,且在不同溶剂中枞酸溶解度有较大的差异,大小顺序为:正丁醇＞正丙醇＞无水乙醇＞甲醇.枞酸在四种醇类溶剂中的溶解度实验数据用λh方程、Wilson方程和简化方程关联的平均相对误差最大值分别为1.43%,1.19%和1.24%.上述结果可为枞酸结晶过程溶剂选择提供基础热力学数据.
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