Isochoric P-ρ-T Measurements for 2,2-Dichloro-1,1,1-Trifluoroethane (R123) at Temperatures from 176 to 380 K and 1-Chloro-1,2,2,2-Tetrafluorethane (R124) from 104 to 400 K at Pressures to 35 Mpa

Published

November 1, 2000

Author(s)

Joe W. Magee

Abstract

The p-p-T relationships were measured for 2,2-dichloro-1,1,1-trifluoroethane (R123) and 1-chloro-1,2,2,2-tetrafluoroethane (R124) by an isochoric method with gravimetric determinations of the amount of substance. Temperatures ranged from 176 to 380 K for R123 and from 104 to 400 K for R124, while pressures extended up to 35 MPa. Measurements were conducted on compressed liquid samples. Most published p-p-T data are in good agreement with this study. The uncertainty is 0.03 K for temperature and 0.01% for pressure at p>3 MPa and 0.05% at p>3 MPa. The principal source of uncertainty is the cell volume (~28.5 cm³), with a standard uncertainty of 0.003 cm³. When all components of experimental uncertainty are considered, the expanded relative uncertainty (with a coverage factor k=2 and, thus, a 2-SD estimate) of the density measurements is estimated to be 0.05%.

Citation

International Journal of Thermophysics

Volume

21

Issue

No. 6

Pub Type

Journals

Keywords

1-chloro-1, 2, 2, 2-tetrafluoroethane, 2, 2-dichloro-1, 1, 1-trifluoroethane, density, p-p-T data, R123, R124, saturated liquid

Citation

Magee, J. (2000), Isochoric P-ρ-T Measurements for 2,2-Dichloro-1,1,1-Trifluoroethane (R123) at Temperatures from 176 to 380 K and 1-Chloro-1,2,2,2-Tetrafluorethane (R124) from 104 to 400 K at Pressures to 35 Mpa, International Journal of Thermophysics (Accessed October 2, 2025)