Norflurane
- Formula: C2H2F4
- Molecular weight: 102.0309
- 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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Phase change data
Go To: Top, Gas Chromatography, References, Notes
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, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 246.6 | K | N/A | PCR Inc., 1990 | BS |
Tboil | 247.1 | K | N/A | Dietrich, 1952 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 169.850 | K | N/A | Magee, 1992 | Uncertainty assigned by TRC = 0.01 K; TRC |
Ttriple | 169.850 | K | N/A | Magee, 1992 | Uncertainty assigned by TRC = 0.01 K; TRC |
Ttriple | 169.85 | K | N/A | Magee, 1992 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 374.1 ± 0.2 | K | AVG | N/A | Average of 13 out of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 40.0 ± 0.2 | atm | AVG | N/A | Average of 13 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 5.00 ± 0.05 | mol/l | AVG | N/A | Average of 11 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
5.66 | 249. | I | Kul, DesMarteau, et al., 2001 | Based on data from 221. to 246. K.; AC |
6.31 | 180. | N/A | Blanke, Klingenberg, et al., 1998 | AC |
5.98 | 200. | N/A | Blanke, Klingenberg, et al., 1998 | AC |
5.69 | 220. | N/A | Blanke, Klingenberg, et al., 1998 | AC |
5.43 | 240. | N/A | Blanke, Klingenberg, et al., 1998 | AC |
5.26 | 294. | N/A | Zhu, Wu, et al., 1992 | Based on data from 279. to 363. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.480 | 169.4 | Zhelezny, Katchurka, et al., 1999 | AC |
Gas Chromatography
Go To: Top, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | SPB-1 | 219. | Flanagan, Streete, et al., 1997 | 60. m/0.53 mm/5. μm, He; Program: 40C(6min) => 5C/min => 80C => 10C/min => 200C |
Capillary | SPB-1 | 219. | Strete, Ruprah, et al., 1992 | 60. m/0.53 mm/5.0 μm, Helium; Program: 40 0C (6 min) 5 0C/min -> 80 0C 10 0C/min -> 200 0C |
References
Go To: Top, Phase change data, Gas Chromatography, 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]
Dietrich, 1952
Dietrich, S.R.,
Private Communication to J. A. Cuculo and L. A. Bigelow from du Pont Com., Wilmington, DE, 1952. [all data]
Magee, 1992
Magee, J.W.,
Measurement of molar heat capacity at constant volume (Cv) for 1,1,1,2-tetrafluoroethane (R134a),
Int. J. Refrig., 1992, 15, 372-80. [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]
Blanke, Klingenberg, et al., 1998
Blanke, W.; Klingenberg, G.; Weber, F.,
International Journal of Thermophysics, 1998, 19, 3, 653-662, https://doi.org/10.1023/A:1022658015509
. [all data]
Zhu, Wu, et al., 1992
Zhu, Ming-Shan; Wu, Jiang; Fu, Yi-Dong,
New experimental vapor pressure data and a new vapor pressure equation for HFC134a,
Fluid Phase Equilibria, 1992, 80, 99-105, https://doi.org/10.1016/0378-3812(92)87058-U
. [all data]
Zhelezny, Katchurka, et al., 1999
Zhelezny, Vitaly; Katchurka, Yu; Pybnikov, M.,
Thermal properties of HFC-134a in liquid and solid states,
High Temp.-High Press., 1999, 31, 2, 169-172, https://doi.org/10.1068/htec251
. [all data]
Flanagan, Streete, et al., 1997
Flanagan, R.J.; Streete, P.J.; Ramsey, J.D.,
Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56, retrieved from http://www.odccp.org/pdf/technicalseries1997-01-011.pdf. [all data]
Strete, Ruprah, et al., 1992
Strete, P.J.; Ruprah, M.; Ramsey, J.D.; Flanagan, R.J.,
Detection and identification of volatile substances by headspace capillary gas chromatography to aid the diagnosis of acute poisoning,
Analyst, 1992, 117, 7, 1111-1127, https://doi.org/10.1039/an9921701111
. [all data]
Notes
Go To: Top, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔvapH Enthalpy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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