Solubility of beta-cyclodextrin in mixtures of water and ethylammonium nitrate at 25 degrees C

被引：6
作者：
Duvivier, S [1 ]
Turmine, M [1 ]
Letellier, P [1 ]
机构：
[1] Univ Paris 06, Lab Energet & Reactivite Interfaces, EA 1519, F-75252 Paris 05, France
来源：
CANADIAN JOURNAL OF CHEMISTRY | 1998年 / 76卷 / 08期
关键词：
ethylammonium nitrate; beta-cyclodextrin; solubility; solubility product; inclusion compounds;
D O I：
10.1139/cjc-76-8-1210
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
beta-Cyclodextrin solubilities were determined in water - ethylammonium nitrate (EAN) mixtures at 25 degrees C. EAN is a molten salt at room temperature (theta(f) = 14 degrees C). It is miscible with water in the whole range of mixtures. Unlike molecular solvents, addition of EAN to water involves a decrease of beta-cyclodextrin solubility. In mixtures rich in salt, this solubility increases anew. beta-Cyclodextrin solubility in pure salt is about 20 times the value in pure water. beta-Cyclodextrin behavior in water-EAN mixtures can be easily described by assuming the presence in solution of a complex ion linking two molecules of beta-cyclodextrin to one ethylammonium ion, which precipitates with nitrate ion.
引用
收藏
页码：1210 / 1214
页数：5
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