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Ethane, 1,1-difluoro-

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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil248.4KN/APCR Inc., 1990BS
Tboil248.5KN/AWeast and Grasselli, 1989BS
Tboil248.45KN/AHenne and Renoll, 1936Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Ttriple154.560KN/ABlanke and Weiss, 1992Uncertainty assigned by TRC = 0.01 K; IPT-90; TRC
Ttriple154.560KN/ABlanke and Weiss, 1991Uncertainty assigned by TRC = 0.01 K; on ITS-90; TRC
Quantity Value Units Method Reference Comment
Ptriple0.00060barN/ABlanke and Weiss, 1992Uncertainty assigned by TRC = 0.00007 bar; TRC
Ptriple0.00060barN/ABlanke and Weiss, 1991Uncertainty assigned by TRC = 0.0001 bar; TRC
Quantity Value Units Method Reference Comment
Tc386.5 ± 0.2KAVGN/AAverage of 7 values; Individual data points
Quantity Value Units Method Reference Comment
Pc44.95barN/AFransson, Barreau, et al., 1992Uncertainty assigned by TRC = 0.10 bar; TRC
Pc45.157barN/ATamatsu, Sato, et al., 1992Uncertainty assigned by TRC = 0.03 bar; TRC
Pc45.198barN/AHigashi, Ashizawa, et al., 1987Uncertainty assigned by TRC = 0.01 bar; TRC
Pc44.9536barN/AMears, Stahl, et al., 1955Uncertainty assigned by TRC = 1.0342 bar; from vapor pressure eq. at Tc; TRC
Quantity Value Units Method Reference Comment
rhoc5.57 ± 0.04mol/lAVGN/AAverage of 6 values; Individual data points

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
22.7249.IKul, DesMarteau, et al., 2001Based on data from 218. - 248. K.; AC
22.1318.N/ALim, Park, et al., 1999Based on data from 303. - 333. K.; AC
23.3234.EBSilva and Weber, 1993Based on data from 219. - 273. K.; AC
21.8265.AStephenson and Malanowski, 1987Based on data from 250. - 386. K.; AC
21.8233.BGMears, Stahl, et al., 1955, 2AC
20.4273.BGMears, Stahl, et al., 1955, 2AC
17.8313.BGMears, Stahl, et al., 1955, 2AC
12.9353.BGMears, Stahl, et al., 1955, 2AC
23.8232.N/AStull, 1947Based on data from 161. - 247. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
160.7 - 246.74.23406896.171-34.714Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
1.57154.6Magee, 1998AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


References

Go To: Top, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Henne and Renoll, 1936
Henne, A.L.; Renoll, M.W., J. Am. Chem. Soc., 1936, 58, 889. [all data]

Blanke and Weiss, 1992
Blanke, W.; Weiss, R., Isochoric (p,v,T) measurements on 1,1-difluoroethane (R152a) in the liquid state from the triple point to 450 K and at pressures up to 30 MPa, Fluid Phase Equilib., 1992, 80, 179-90. [all data]

Blanke and Weiss, 1991
Blanke, W.; Weiss, R., Thermodynamic properties of refrigerants. Part I: the triple points of the refrigerants R11, R12, R22, R142b, and 152a, PTB-Mitt., 1991, 101, 337-9. [all data]

Fransson, Barreau, et al., 1992
Fransson, E.; Barreau, A.; Vidal, J., Vapor-liquid equilibrium in binary systems of n-pentane + chlorodifluoromethane or + 1,1-difluoroethane, J. Chem. Eng. Data, 1992, 37, 521-5. [all data]

Tamatsu, Sato, et al., 1992
Tamatsu, T.; Sato, T.; Sato, H.; Watanabe, K., An experimental study of the thermodynamic properties of 1,1-difluoroethane, Int. J. Thermophys., 1992, 13, 985-97. [all data]

Higashi, Ashizawa, et al., 1987
Higashi, Y.; Ashizawa, M.; Kabata, Y.; Majima, T.; Uematsu, M.; Watanabe, K., Measurements of vapor pressure, vapor-liquid coexistence curve and critical parameters of Refrigerant 152a, JSME Int. J., 1987, 30, 1106-12. [all data]

Mears, Stahl, et al., 1955
Mears, W.H.; Stahl, R.F.; Orfeo, S.R.; Shair, R.C.; Kells, L.F.; Thompson, W.; McCann, H., Thermodynamic Properties of Halogenated Ethanes and Ethylenes, Ind. Eng. Chem., 1955, 47, 1449. [all data]

Kul, DesMarteau, et al., 2001
Kul, Ismail; DesMarteau, Darryl D.; Beyerlein, Adolph L., Vapor--liquid equilibria for CF3OCF2H/fluorinated ethane and CF3SF5/fluorinated ethane mixtures as potential R22 alternatives, Fluid Phase Equilibria, 2001, 185, 1-2, 241-253, https://doi.org/10.1016/S0378-3812(01)00474-5 . [all data]

Lim, Park, et al., 1999
Lim, Jong Sung; Park, Ji-Young; Lee, Byung-Gwon; Lee, Youn-Woo; Kim, Jae-Duck, Phase Equilibria of CFC Alternative Refrigerant Mixtures: Binary Systems of Isobutane + 1,1,1,2-Tetrafluoroethane, + 1,1-Difluoroethane, and + Difluoromethane, J. Chem. Eng. Data, 1999, 44, 6, 1226-1230, https://doi.org/10.1021/je9900777 . [all data]

Silva and Weber, 1993
Silva, Alberto M.; Weber, Lloyd A., Ebulliometric measurement of the vapor pressure of 1-chloro-1,1-difluoroethane and 1,1-difluoroethane, J. Chem. Eng. Data, 1993, 38, 4, 644-646, https://doi.org/10.1021/je00012a043 . [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Mears, Stahl, et al., 1955, 2
Mears, Whitney H.; Stahl, Richard F.; Orfeo, S. Robert; Shair, Robert C.; Kells, Lyman F.; Thompson, Walter; McCann, Harold, Thermodynamic Properties of Halogenated Ethanes and Ethylenes, Ind. Eng. Chem., 1955, 47, 7, 1449-1454, https://doi.org/10.1021/ie50547a052 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Magee, 1998
Magee, J.W., International Journal of Thermophysics, 1998, 19, 5, 1397-1420, https://doi.org/10.1023/A:1021983502589 . [all data]


Notes

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