Measurements of the critical parameters and the vapor--liquid coexistence curve in the critical region of HCFC-123

Seisho Tanikawa, Yasuo Kabata, Haruki Sato, Koichi Watanabe

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Measurements of the vapor-liquid coexistence curve in the critical region were made for HCFC-123 (CHCI2CF3) by visual observation of the vapor-liquid interface in an optical cell. Thirty densities of both saturated liquid and vapor were obtained in the range of temperatures from 401 K to the critical temperature corresponding to the density range between 203 and 1141 kg/m3. The experimental uncertainty of the temperature measurements was estimated to be less than ±12 mK, while that of the density measurements was estimated to be between ±0.09% and ±0.53%. Not only the level where the meniscus disappeared but also the intensity of the critical opalescence were considered for the determination of the critical temperature Tc and the critical density Pc of HCFC-123 as 456.86 ± 0.02 K and 556 ± 3 kg/m3, respectively. The critical exponent β was also determined, and the correlation of the saturated liquid density of HCFC-123 was established.

Original languageEnglish
Pages (from-to)381-385
Number of pages5
JournalJournal of Chemical and Engineering Data
Volume35
Issue number4
Publication statusPublished - 1990 Oct

Fingerprint

Vapors
Liquids
Density of liquids
Temperature measurement
Temperature
2,2-dichloro-1,1,1-trifluoroethane
Uncertainty

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Measurements of the critical parameters and the vapor--liquid coexistence curve in the critical region of HCFC-123. / Tanikawa, Seisho; Kabata, Yasuo; Sato, Haruki; Watanabe, Koichi.

In: Journal of Chemical and Engineering Data, Vol. 35, No. 4, 10.1990, p. 381-385.

Research output: Contribution to journalArticle

Tanikawa, Seisho ; Kabata, Yasuo ; Sato, Haruki ; Watanabe, Koichi. / Measurements of the critical parameters and the vapor--liquid coexistence curve in the critical region of HCFC-123. In: Journal of Chemical and Engineering Data. 1990 ; Vol. 35, No. 4. pp. 381-385.
@article{5cec98baf81749d196418372e79f8c01,
title = "Measurements of the critical parameters and the vapor--liquid coexistence curve in the critical region of HCFC-123",
abstract = "Measurements of the vapor-liquid coexistence curve in the critical region were made for HCFC-123 (CHCI2CF3) by visual observation of the vapor-liquid interface in an optical cell. Thirty densities of both saturated liquid and vapor were obtained in the range of temperatures from 401 K to the critical temperature corresponding to the density range between 203 and 1141 kg/m3. The experimental uncertainty of the temperature measurements was estimated to be less than ±12 mK, while that of the density measurements was estimated to be between ±0.09{\%} and ±0.53{\%}. Not only the level where the meniscus disappeared but also the intensity of the critical opalescence were considered for the determination of the critical temperature Tc and the critical density Pc of HCFC-123 as 456.86 ± 0.02 K and 556 ± 3 kg/m3, respectively. The critical exponent β was also determined, and the correlation of the saturated liquid density of HCFC-123 was established.",
author = "Seisho Tanikawa and Yasuo Kabata and Haruki Sato and Koichi Watanabe",
year = "1990",
month = "10",
language = "English",
volume = "35",
pages = "381--385",
journal = "Journal of Chemical and Engineering Data",
issn = "0021-9568",
publisher = "American Chemical Society",
number = "4",

}

TY - JOUR

T1 - Measurements of the critical parameters and the vapor--liquid coexistence curve in the critical region of HCFC-123

AU - Tanikawa, Seisho

AU - Kabata, Yasuo

AU - Sato, Haruki

AU - Watanabe, Koichi

PY - 1990/10

Y1 - 1990/10

N2 - Measurements of the vapor-liquid coexistence curve in the critical region were made for HCFC-123 (CHCI2CF3) by visual observation of the vapor-liquid interface in an optical cell. Thirty densities of both saturated liquid and vapor were obtained in the range of temperatures from 401 K to the critical temperature corresponding to the density range between 203 and 1141 kg/m3. The experimental uncertainty of the temperature measurements was estimated to be less than ±12 mK, while that of the density measurements was estimated to be between ±0.09% and ±0.53%. Not only the level where the meniscus disappeared but also the intensity of the critical opalescence were considered for the determination of the critical temperature Tc and the critical density Pc of HCFC-123 as 456.86 ± 0.02 K and 556 ± 3 kg/m3, respectively. The critical exponent β was also determined, and the correlation of the saturated liquid density of HCFC-123 was established.

AB - Measurements of the vapor-liquid coexistence curve in the critical region were made for HCFC-123 (CHCI2CF3) by visual observation of the vapor-liquid interface in an optical cell. Thirty densities of both saturated liquid and vapor were obtained in the range of temperatures from 401 K to the critical temperature corresponding to the density range between 203 and 1141 kg/m3. The experimental uncertainty of the temperature measurements was estimated to be less than ±12 mK, while that of the density measurements was estimated to be between ±0.09% and ±0.53%. Not only the level where the meniscus disappeared but also the intensity of the critical opalescence were considered for the determination of the critical temperature Tc and the critical density Pc of HCFC-123 as 456.86 ± 0.02 K and 556 ± 3 kg/m3, respectively. The critical exponent β was also determined, and the correlation of the saturated liquid density of HCFC-123 was established.

UR - http://www.scopus.com/inward/record.url?scp=0025506994&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025506994&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0025506994

VL - 35

SP - 381

EP - 385

JO - Journal of Chemical and Engineering Data

JF - Journal of Chemical and Engineering Data

SN - 0021-9568

IS - 4

ER -