SOLUTION THERMODYNAMICS OF 4-HYDROXYBENZOATES IN WATER, 95-PERCENT ETHANOL WATER, 1-OCTANOL AND HEXANE

被引：5

作者：

BEEZER, AE

FORSTER, S

PARK, WB

RIMMER, GJ

BUCKTON, G

机构：

[1] UNIV LONDON,ROYAL HOLLOWAY & BEDFORD NEW COLL,DEPT CHEM,EGHAM TW20 0EX,SURREY,ENGLAND

[2] UNIV LONDON,SCH PHARM,LONDON,ENGLAND

来源：

THERMOCHIMICA ACTA | 1991年 / 178卷

关键词：

D O I：

10.1016/0040-6031(91)80297-V

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubilities have been measured for an homologous series of 4-hydroxybenzoates in water, 95% ethanol-water, 1-octanol and hexane. From solubility data over a range of temperatures, the values of DELTA-G(soln), DELTA-H(soln) and DELTA-S(soln) are determined. The DELTA-H(soln) data are further used to determine the enthalpies of transfer of the solutes from water to the other solvents. In all the solvents studied the DELTA-G(soln) data show two linear periods which exhibit breaks with between five and six carbon atoms in the alkyl chain. The data are discussed in terms of hydrophobic/hydrophilic interactions.

引用

页码：59 / 65

页数：7

共 7 条

[1] SOLUTION THERMODYNAMICS FOR ALKOXY PHENOLS IN ALCOHOL AND IN WATER-ALCOHOL SYSTEMS [J].