Vapor-liquid equilibrium, coexistence curve, and critical locus for pentafluoroethane + 1,1,1,2-tetrafluoroethane (R125/R134a)

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Abstract

The vapor-liquid equilibrium for pentafluoroethane (R125) + 1,1,1,2-tetrafluoroethane (R134a) was measured along four isotherms between 283 K and 313 K. The vapor-liquid coexistence curve at constant composition near the mixture critical point was measured by the observation of the meniscus disappearance. The critical temperatures and critical densities of the 0.2670 and 0.6648 mole fraction of R125 were determined from the saturation densities along the coexistence curve in the critical region. In addition, the critical locus for the R125/R134a mixture is correlated as a function of composition.

Original languageEnglish
Pages (from-to)328-332
Number of pages5
JournalJournal of Chemical and Engineering Data
Volume44
Issue number2
DOIs
Publication statusPublished - Mar 1 1999
Externally publishedYes

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norflurane
Phase equilibria
Chemical analysis
Isotherms
Vapors
Liquids
Temperature
pentafluoroethane

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

@article{992926a232954293a3c695b5598697af,
title = "Vapor-liquid equilibrium, coexistence curve, and critical locus for pentafluoroethane + 1,1,1,2-tetrafluoroethane (R125/R134a)",
abstract = "The vapor-liquid equilibrium for pentafluoroethane (R125) + 1,1,1,2-tetrafluoroethane (R134a) was measured along four isotherms between 283 K and 313 K. The vapor-liquid coexistence curve at constant composition near the mixture critical point was measured by the observation of the meniscus disappearance. The critical temperatures and critical densities of the 0.2670 and 0.6648 mole fraction of R125 were determined from the saturation densities along the coexistence curve in the critical region. In addition, the critical locus for the R125/R134a mixture is correlated as a function of composition.",
author = "Yukihiro Higashi",
year = "1999",
month = "3",
day = "1",
doi = "10.1021/je980265h",
language = "English",
volume = "44",
pages = "328--332",
journal = "Journal of Chemical & Engineering Data",
issn = "0021-9568",
publisher = "American Chemical Society",
number = "2",

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TY - JOUR

T1 - Vapor-liquid equilibrium, coexistence curve, and critical locus for pentafluoroethane + 1,1,1,2-tetrafluoroethane (R125/R134a)

AU - Higashi, Yukihiro

PY - 1999/3/1

Y1 - 1999/3/1

N2 - The vapor-liquid equilibrium for pentafluoroethane (R125) + 1,1,1,2-tetrafluoroethane (R134a) was measured along four isotherms between 283 K and 313 K. The vapor-liquid coexistence curve at constant composition near the mixture critical point was measured by the observation of the meniscus disappearance. The critical temperatures and critical densities of the 0.2670 and 0.6648 mole fraction of R125 were determined from the saturation densities along the coexistence curve in the critical region. In addition, the critical locus for the R125/R134a mixture is correlated as a function of composition.

AB - The vapor-liquid equilibrium for pentafluoroethane (R125) + 1,1,1,2-tetrafluoroethane (R134a) was measured along four isotherms between 283 K and 313 K. The vapor-liquid coexistence curve at constant composition near the mixture critical point was measured by the observation of the meniscus disappearance. The critical temperatures and critical densities of the 0.2670 and 0.6648 mole fraction of R125 were determined from the saturation densities along the coexistence curve in the critical region. In addition, the critical locus for the R125/R134a mixture is correlated as a function of composition.

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U2 - 10.1021/je980265h

DO - 10.1021/je980265h

M3 - Article

VL - 44

SP - 328

EP - 332

JO - Journal of Chemical & Engineering Data

JF - Journal of Chemical & Engineering Data

SN - 0021-9568

IS - 2

ER -