Vapor pressure and enthalpy of vaporization of oil of catnip by correlation gas chromatography

被引：5

作者：

Simmons, Daniel ^{[1
]}

Gobble, Chase ^{[1
]}

Chickos, James ^{[1
]}

机构：

[1] Univ Missouri, Dept Chem & Biochem, St Louis, MO 63121 USA

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2016年 / 92卷

关键词：

Catnip; Vapor pressure; Vaporization enthalpy; Correlation gas chromatography; Nepetalactones; SERIES; GAMMA;

D O I：

10.1016/j.jct.2015.09.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The vaporization enthalpy and vapor pressure of the two nepetalactones found in Nepeta cataria have been evaluated by correlation gas chromatography. Vaporization enthalpies at T = 298.15 K of {(68.0 +/- 1.9) and (69.4 +/- 1.9)} kJ . mol (1) have been derived for the minor diastereomer, (4aS, 7S, 7aS)-nepetalactone, and major one, (4aS, 7S, 7aR)-nepetalactone, respectively. Vapor pressures also at T = 298.15 K of p = (1.2 +/- 0.04) Pa and (0.91 +/- 0.03) Pa have been evaluated for the minor and the major stereoisomer. In addition to being of interest because of the remarkable effect it has on various felids, oil of catnip is also quite effective in repelling mosquitoes, comparable to diethyl-m-toluamide (DEET). The vapor pressures evaluated in this work suggest that the two stereoisomers have similar volatility to DEET at ambient temperatures. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：126 / 131

页数：6

共 18 条

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