DETERMINATION OF THE CRITICAL-TEMPERATURE AND DENSITY OF HEXAFLUOROETHANE

被引：18

作者：

SAIKAWA, K ^{[1
]}

KIJIMA, J ^{[1
]}

UEMATSU, M ^{[1
]}

WATANABE, K ^{[1
]}

机构：

[1] KEIO UNIV,DEPT MECH ENGN,YOKOHAMA,KANAGAWA 223,JAPAN

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1979年 / 24卷 / 03期

关键词：

D O I：

10.1021/je60082a002

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Twenty-seven measurements of the temperature-density data on the coexistence curve for C2F6 were made by visual observation of “the disappearance of the meniscus” at the vapor-liquid interface In an optical cell. The measurements were conducted for the densities between 401.4 and 835.2 kg/m3 and for the temperatures close to Tc, within 2.4 K. The critical opalescence was observed for 10 densities out of 27 measurements between 570.7 and 695.0 kg/m3. The error of density and temperature measurements was estimated ±0.1% and ±10 mK, respectively. The critical temperature was determined as Tc = 293.035 ± 0.010 K and the critical density 622 ± 10 kg/m3. The critical pressure was calculated Pc = 3.042 ± 0.008 MPa by using the published vapor-pressure data with the present value of Tc. © 1979, American Chemical Society. All rights reserved.

引用

页码：165 / 167

页数：3

共 10 条

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[2]

HEJMADI AV, 1978, NOV AICHE M MIAM

[3]

IVANOV DY, 1974, JETP LETT+, V20, P121

[4]

KIJIMA J, 1977, 7TH P S THERM PROP, P480