VAPOR-PRESSURES, GAS-PHASE PVT PROPERTIES, AND 2ND VIRIAL-COEFFICIENTS FOR 1,1,1-TRIFLUOROETHANE

被引：28

作者：

ZHANG, HL

SATO, H

WATANABE, K

机构：

[1] Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Kohoku-ku, Yokohama 223

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1995年 / 40卷 / 04期

关键词：

D O I：

10.1021/je00020a033

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The PVT properties of 1,1,1-trifluoroethane (R-143a) in the gas phase have been measured by a Burnett apparatus in the range of temperatures from 320 to 380 K and at pressures up to 6 MPa. The vapor pressures in the range of temperatures from 295 to 342 K have also been measured, and a vapor-pressure correlation has been developed. The critical pressure was determined to be (3.776 +/- 0.005) MPa on the basis of the present measurements. The second virial coefficients have been determined along seven isotherms, and a truncated virial equation of state has also been developed to represent the temperature dependence of the second virial coefficients and the present Burnett PVT measurements. The experimental uncertainties of temperature, pressure, density, and second virial coefficient throughout the present study were estimated to be no more than +/-8 mK, +/-0.8 kPa, +/-0.12%, and +/-5%, respectively. The purity of the R-143a sample used was better than 99.95 mol%.

引用

页码：887 / 890

页数：4

共 9 条

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