Methyl fluoride
- Formula: CH3F
- Molecular weight: 34.0329
- IUPAC Standard InChIKey: NBVXSUQYWXRMNV-UHFFFAOYSA-N
- CAS Registry Number: 593-53-3
- 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: Fluoromethane; Methane, fluoro-; Freon 41; CH3F; UN 2454; R 41; HFC-41; Refrigerant gas R 41
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Phase change data
Go To: Top, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 195. | K | N/A | Papousek, Tesar, et al., 1991 | Uncertainty assigned by TRC = 2. K; TRC |
Tboil | 194.6 | K | N/A | PCR Inc., 1990 | BS |
Tboil | 195. | K | N/A | Filatov, Makarov, et al., 1968 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ptriple | 0.00370 | bar | N/A | Fonseca and Lobo, 1989 | Uncertainty assigned by TRC = 0.00005 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 317.4 | K | N/A | Bominaar, Biswas, et al., 1987 | Uncertainty assigned by TRC = 0.5 K; PVT by Burnett method. R41; TRC |
Tc | 317.7 | K | N/A | Cawood and Patterson, 1932 | Uncertainty assigned by TRC = 0.05 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 58.70 | bar | N/A | Bominaar, Biswas, et al., 1987 | Uncertainty assigned by TRC = 0.5865 bar; PVT by Burnett method. R41; TRC |
Pc | 58.7685 | bar | N/A | Cawood and Patterson, 1932 | Uncertainty assigned by TRC = 0.2026 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 9.20 | mol/l | N/A | Biswas, Ten Seldam, et al., 1989 | Uncertainty assigned by TRC = 0.06 mol/l; from equation of state fit to obs. density; TRC |
ρc | 9.17 | mol/l | N/A | Biswas, Ten Seldam, et al., 1989 | Uncertainty assigned by TRC = 0.06 mol/l; from extraplation of rectilinear diameter; TRC |
ρc | 9.14 | mol/l | N/A | Bominaar, Biswas, et al., 1987 | Uncertainty assigned by TRC = 0.0091 mol/l; PVT by Burnett Method, R41. Original units mol m-3; TRC |
ρc | 8.824 | mol/l | N/A | Cawood and Patterson, 1932 | Uncertainty assigned by TRC = 0.009 mol/l; TRC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
16.9 | 227. | A | Stephenson and Malanowski, 1987 | Based on data from 205. to 242. K.; AC |
16.9 | 273. | A | Stephenson and Malanowski, 1987 | Based on data from 240. to 288. K.; AC |
17.1 | 193. | A,E | Stephenson and Malanowski, 1987 | Based on data from 141. to 208. K. See also Li and Rossini, 1961 and Dykyj, 1970.; AC |
16.4 | 202. | N/A | Stephenson and Malanowski, 1987 | Based on data from 165. to 217. K. See also Michels and Wassenaar, 1948 and Boublik, Fried, et al., 1984.; AC |
17.7 | 183. | A | Stephenson and Malanowski, 1987 | Based on data from 170. to 197. K. See also Moles and Batuecas, 1919 and Boublik, Fried, et al., 1984.; AC |
17.9 | 172. | N/A | Oi, Shulman, et al., 1983 | Based on data from 133. to 211. 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 |
---|---|---|---|---|---|
164.26 to 216.77 | 3.0514 | 395.889 | -64.151 | Michels and Wassenaar, 1948 | Coefficents calculated by NIST from author's data. |
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.
Papousek, Tesar, et al., 1991
Papousek, D.; Tesar, R.; Pracna, P.; Civis, S.; Winnewisser, M.; Belov, S.P.; Tret'yakov, M.Y.,
High-resolution Fourier transform and submillimeter-wave study of the ν6 band of methyl-12C fluoride,
J. Mol. Spectrosc., 1991, 147, 279-99. [all data]
PCR Inc., 1990
PCR Inc.,
Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]
Filatov, Makarov, et al., 1968
Filatov, A.S.; Makarov, S.P.; Yakubovich, A.Ya.,
Halogenation of 1,1,1-Trifluoroazomethane,
Zh. Obshch. Khim., 1968, 38, 33. [all data]
Fonseca and Lobo, 1989
Fonseca, I.M.A.; Lobo, L.Q.,
Thermodynamics of liquid mixtures of xenon and methyl fluoride,
Fluid Phase Equilib., 1989, 47, 249. [all data]
Bominaar, Biswas, et al., 1987
Bominaar, S.A.R.C.; Biswas, S.N.; Trappeniers, N.J.; Ten Seldam, C.A.,
(p, Vm, T) properties of methyl fluoride in the (gas + liquid) critical region,
J. Chem. Thermodyn., 1987, 19, 959. [all data]
Cawood and Patterson, 1932
Cawood, W.; Patterson, H.S.,
Some Physical Constants of Methyl Fluoride, and the Atomic Weight of Fluorine,
J. Chem. Soc., 1932, 1932, 2180. [all data]
Biswas, Ten Seldam, et al., 1989
Biswas, S.N.; Ten Seldam, C.A.; Bominaar, S.A.R.C.; Trappeniers, N.J.,
Liquid-vapor coexistence curve of methyl fluoride in the critical region,
Fluid Phase Equilib., 1989, 49, 1-7. [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]
Li and Rossini, 1961
Li, J.C.M.; Rossini, F.D.,
Vapor Pressures and Boiling Points of the l-Fluoroalkanes, l-Chloroalkanes, l-Bromoalkanes, and l-Iodoalkanes, C 1 to C 20 .,
J. Chem. Eng. Data, 1961, 6, 2, 268-270, https://doi.org/10.1021/je60010a025
. [all data]
Dykyj, 1970
Dykyj, J.,
Petrochemica, 1970, 10, 2, 51. [all data]
Michels and Wassenaar, 1948
Michels, A.; Wassenaar, T.,
Vapour pressure of methylfluoride,
Physica, 1948, 14, 2-3, 104-110, https://doi.org/10.1016/0031-8914(48)90030-5
. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Moles and Batuecas, 1919
Moles, E.; Batuecas, T.J.,
J. Chim. Phys. Phys.-Chim. Biol., 1919, 17, 537. [all data]
Oi, Shulman, et al., 1983
Oi, Takao; Shulman, Jan; Popowicz, Anthony; Ishida, Takanobu,
Vapor pressure isotope effects in liquid methyl fluoride,
J. Phys. Chem., 1983, 87, 16, 3153-3160, https://doi.org/10.1021/j100239a038
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Ptriple Triple point pressure Tboil Boiling point Tc Critical temperature ΔvapH Enthalpy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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