Norflurane
- Formula: C2H2F4
- Molecular weight: 102.0309
- IUPAC Standard InChI: InChI=1S/C2H2F4/c3-1-2(4,5)6/h1H2
- IUPAC Standard InChIKey: LVGUZGTVOIAKKC-UHFFFAOYSA-N
- CAS Registry Number: 811-97-2
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 1,1,1,2-Tetrafluoroethane; Ethane, 1,1,1,2-tetrafluoro-; Norfluran; R 134a; 1,2,2,2-Tetrafluoroethane; CF3CH2F; HFA-134a
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Critical density
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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 by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| ρc (mol/l) | Reference | Comment |
|---|---|---|
| 4.97 | Fujiwara, Nakamura, et al., 1998 | Uncertainty assigned by TRC = 0.05 mol/l; 3 measurements by obs. of critical opalesence. Made to establish accuracy of technique, includes review of and comparison with previous literature; TRC |
| 4.99 | Fujiwara, Nakamura, et al., 1998 | Uncertainty assigned by TRC = 0.03 mol/l; 3 measurements by obs. of critical opalesence. Made to establish accuracy of technique, includes review of and comparison with previous literature; TRC |
| 5.01 | Fujiwara, Nakamura, et al., 1998 | Uncertainty assigned by TRC = 0.05 mol/l; 3 measurements by obs. of critical opalesence. Made to establish accuracy of technique, includes review of and comparison with previous literature; TRC |
| 4.99 | Aoyama, Kishizawa, et al., 1996 | Uncertainty assigned by TRC = 0.02 mol/l; At critical opalesence, includes revies of and comparison with previous literature; TRC |
| 4.98 | Higashi, 1995 | Uncertainty assigned by TRC = 0.05 mol/l; TRC |
| 5.01 | Higashi, 1994 | Uncertainty assigned by TRC = 0.03 mol/l; TRC |
| 5.049 | Morrison and Ward, 1991 | Uncertainty assigned by TRC = 0.025 mol/l; TRC |
| 4.97 | Fukushima, Watanabe, et al., 1990 | Uncertainty assigned by TRC = 0.05 mol/l; by extrapolation of rectilinear diameter to Tc; TRC |
| 5.020 | Basu and Wilson, 1989 | Uncertainty assigned by TRC = 0.05 mol/l; TRC |
| 4.98 | Kabata, Tanikawa, et al., 1989 | Uncertainty assigned by TRC = 0.03 mol/l; TRC |
| 5.020 | Wilson and Basu, 1988 | Uncertainty assigned by TRC = 0.02 mol/l; from rectilinear diameters; TRC |
References
Go To: Top, Critical density, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Fujiwara, Nakamura, et al., 1998
Fujiwara, K.; Nakamura, S.; Noguchi, M.,
Critical Parameters and Vapor Pressure Measurements for 1,1,1-Trifluoroethane (R-143a),
J. Chem. Eng. Data, 1998, 43, 55-9. [all data]
Aoyama, Kishizawa, et al., 1996
Aoyama, H.; Kishizawa, G.; Sato, H.; Watanabe, K.,
Vapor-Liquid Coexistence Curves in the Critical Region and the Critical Temperatures and Densities of 1,1,1,2-Tetrafluoroethane (R-134a), 1,1,1- Trifluoroethane (R-143a), and 1,1,1,2,3,3- Hexafluorop,
J. Chem. Eng. Data, 1996, 41, 1046-1051. [all data]
Higashi, 1995
Higashi, Y.,
Vapor-liquid equilibrium, coexistence curve, and critical locus for binary HFC-32/HFC-134a mixture,
Int. J. Thermophys., 1995, 16, 1175-84. [all data]
Higashi, 1994
Higashi, Y.,
Critical parameters for HFC134a, HFC32 and HFC125,
Int. J. Refrig., 1994, 17, 524-531. [all data]
Morrison and Ward, 1991
Morrison, G.; Ward, D.,
Thermodynamic properties of two alternative refrigerants: 1,1-dichloro-2,2, 2-trifluoroethane (R123) and 1,1,1,2- tetrafluoroethane (R134a),
Fluid Phase Equilib., 1991, 62, 65-86. [all data]
Fukushima, Watanabe, et al., 1990
Fukushima, M.; Watanabe, N.; Kamimura, T.,
Measurements of the vapor-liquid coexistence curves and the critical parameters of HCFC123 and HFC134a,
Nippon Reito Kyokai Ronbunshu, 1990, 7, 189-99. [all data]
Basu and Wilson, 1989
Basu, R.S.; Wilson, D.P.,
Thermophysical properties of 1,1,1,2-Tetrafluoroethane (R-134a),
Int. J. Thermophys., 1989, 10, 591-603. [all data]
Kabata, Tanikawa, et al., 1989
Kabata, Y.; Tanikawa, S.; Uematsu, M.; Watanabe, K.,
Measurements of the vapor-liquid coexistence curve and the critical parameters for 1,1,1,2-Tetrafluoroethane,
Int. J. Thermophys., 1989, 10, 605. [all data]
Wilson and Basu, 1988
Wilson, D.P.; Basu, R.S.,
Thermodynamic properties of a new stratospherically safe working fluid- refrigerant 134A,
ASHRAE Trans., 1988, 94, 2095-2118. [all data]
Notes
Go To: Top, Critical density, References
- Symbols used in this document:
ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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