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Critical Parameters and Vapor Pressure Measurements of Hydrofluoroethers at High Temperatures
Abstract
An apparatus was constructed for the measurement of critical parameters and vapor pressure at high temperatures. Its reliability was confirmed with two commercially available chlorofluorocarbons, HFC-134a (CF 3 CH 2 F) and HCFC-142b (CH 3 CClF 2 ). Measured overall values fell well within the range of other reports. Attempts were made to measure the critical parameters of 21 newly synthesized hydrofluoroethers, that are potentially useful for dry-cleaning and have critical temperatures higher than 450 K. Before the measurements, great care was taken to remove traces of moisture from the samples. Among these new compounds, six were thermally unstable and four were rather unstable even after dehydration. The critical parameters of the remaining 11 were successfully obtained with good reproducibility. Their Antoine and Wagner parameters were also reported.
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References 23 · Cited by 21
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Metadata
- Authors
- Yasumoto, M., Yamada, Y., Murata, J., Urata, S., & Otake, K.
- Affiliations
- Research Institute of Innovative Technology for the Earth (JP)
- Corresponding author
- Otake, Katsuto
- Venue
- Journal of Chemical & Engineering Data
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-10-03
- Volume
- 48
- Issue
- 6
- Pages
- 1368-1379
- ISSN
- 0021-9568 (ISSN-L)
- 1520-5134
- OpenAlex
- W2062392761
- Cited by
- 21
- References
- 23
- Citations by year
- 2025: 1 · 2022: 2 · 2021: 2 · 2020: 1 · 2019: 1 · 2017: 1 · 2016: 1 · 2013: 1
- FWCI
- 1.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Chemical & Engineering Data (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Phase Equilibria and Thermodynamics
- Physical Sciences › Chemistry › Organic Chemistry › Chemical Thermodynamics and Molecular Structure
- Physical Sciences › Engineering › Mechanical Engineering › Refrigeration and Air Conditioning Technologies
- Keywords
- hydrofluoroethers, critical parameters, vapor pressure, high temperature, R134a, HCFC-142b, chlorofluorocarbons, dry cleaning solvents, thermally unstable compounds, dehydration, Antoine equation, Wagner equation, critical temperature
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