Compressed liquid densities, saturated liquid densities, and vapor pressures of 1,1-difluoroethane
- National Inst. of Standards and Technology, Gaithersburg, MD (United States)
The compressed liquid densities and vapor pressures of 1,1-difluoroethane (HFC-152a) have been measured, correlated, and compared with other data. The liquid densities were measured with a combined standard uncertainty of {+-}0.05% using a vibrating tube densimeter over a temperature range of 243 K to 371 K and at pressures from near the saturated vapor pressure to 6,500 kPa; thus the data extend nearly to the critical point ({Tc} = 386.41 K and P{sub c} = 4514.7 kPa). The vapor pressures were measured with a combined standard uncertainty of {+-}0.02% using a stainless steel ebulliometer in the temperature range from 280 K to 335 K. Saturated liquid densities were calculated by extrapolating the compressed liquid isotherms to the saturation pressure.
- OSTI ID:
- 256882
- Journal Information:
- Journal of Chemical and Engineering Data, Vol. 41, Issue 3; Other Information: PBD: May-Jun 1996
- Country of Publication:
- United States
- Language:
- English
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