Vapor Pressure Determination by Gas Chromatography in the Microtorr Range--Anthracene and Triethylene Glycol Di-2-Ethyl Butyrate

Publisher Website
Google Scholar
Abstract
Vapor pressures of slightly volatile materials are measured by the dynamic method using gas chromatography. In addition to the great sensitivity of the hydrogen flame detector, the method has the added advantage of largely eliminating the effect of volatile impurities and thermal decomposition that normally plague low vapor pressure determinations. Anthracene vapor pressures are reported in the 60 to 60,000 microtorr range at temperatures from 30°C to 100°C. The correlation index of data fitted to the Antoine relation is not significantly changed by including Stull's-smoothed vapor pressure values, determined at temperatures from 145°C to 217.5°C (mp) by conventional methods. Flexol 3GH (triethlyene glycol di-2-ethylbutyrate) plasticizer vapor pressure is also measured from 40° to 100°C by the chromatographic method and the data compared with literature values at higher temperatures. Antoine constants, A, B, and C for the relation

This publication has 0 references indexed in Scilit: