ISSN:
1572-9567
Keywords:
1-chloro-1,2,2,2-tetrafluoroethane
;
density
;
2,2-dichloro-1,1,1-trifluoroethane
;
p–ρ–T data
;
R123
;
R124
;
saturated liquid
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The p–ρ–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–ρ–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%.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1006765026817
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