Propane, 2-methoxy-2-methyl-
- Formula: C5H12O
- Molecular weight: 88.1482
- IUPAC Standard InChIKey: BZLVMXJERCGZMT-UHFFFAOYSA-N
- CAS Registry Number: 1634-04-4
- 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: Ether, tert-butyl methyl; tert-Butyl methyl ether; Methyl tert-butyl ether; 2-Methoxy-2-methylpropane; 2-Methyl-2-methoxypropane; tert-C4H9OCH3; Methyl t-butyl ether; MTBE; Methyl 1,1-dimethylethyl ether; UN 2398; Driveron; 1,1-Dimethylethyl methyl ether; t-Butyl methyl ether; methyl tert-butyl ether (MTBE)
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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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 328.2 ± 0.2 | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 164.50 | K | N/A | Olson, Hipsher, et al., 1947 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 164.56 | K | N/A | Andon and Martin, 1975 | Uncertainty assigned by TRC = 0.07 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 496.40 | K | N/A | Daubert, Jalowka, et al., 1987 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tc | 497.1 | K | N/A | Majer and Svoboda, 1985 | |
Tc | 497.1 | K | N/A | Ambrose, Broderick, et al., 1974 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 33.970 | bar | N/A | Daubert, Jalowka, et al., 1987 | Uncertainty assigned by TRC = 0.08 bar; TRC |
Pc | 34.30 | bar | N/A | Ambrose, Broderick, et al., 1974 | Uncertainty assigned by TRC = 0.10 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 30.0 ± 0.5 | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
27.94 | 328.3 | N/A | Majer and Svoboda, 1985 | |
29.9 | 314. | N/A | Segura, Galindo, et al., 2002 | Based on data from 300. to 328. K.; AC |
29.6 | 330. | N/A | Aucejo, Loras, et al., 1998 | Based on data from 315. to 365. K.; AC |
30.0 | 310. | N/A | Belaribi, Ait-Kaci, et al., 1995 | Based on data from 298. to 322. K.; AC |
31.2 | 315. | EB | Kraehenbuehl and Gmehling, 1994 | Based on data from 300. to 411. K.; AC |
30.4 | 302. | N/A | Wu, Pividal, et al., 1991 | Based on data from 287. to 326. K.; AC |
30.2 | 302. | A | Stephenson and Malanowski, 1987 | Based on data from 287. to 351. K. See also Ambrose, Ellender, et al., 1976.; AC |
27.9 | 328. | N/A | Ambrose, Ellender, et al., 1976 | AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
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Temperature (K) | A (kJ/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
298. to 343. | 46.23 | 0.2893 | 497.1 | Majer and Svoboda, 1985 |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
7.600 | 164.56 | Andon and Martin, 1975, 2 | DH |
7.6 | 164.6 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
46.18 | 164.56 | Andon and Martin, 1975, 2 | DH |
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.
Olson, Hipsher, et al., 1947
Olson, W.T.; Hipsher, H.F.; Buess, C.M.; Goodman, I.A.; Hart, I.; Lamneck, J.H.; Gibbons, L.C.,
The Synthesis and Purification of Ethers,
J. Am. Chem. Soc., 1947, 69, 2451-4. [all data]
Andon and Martin, 1975
Andon, R.J.L.; Martin, J.F.,
Thermodynamic Properties of Organic Oxygen Compounds 40. Heat Capacity and Entropy of Six Ethers,
J. Chem. Thermodyn., 1975, 7, 593. [all data]
Daubert, Jalowka, et al., 1987
Daubert, T.E.; Jalowka, J.W.; Goren, V.,
Vapor pressure of 22 pure industrial chemicals,
AIChE Symp. Ser., 1987, 83, 256, 128-156. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Ambrose, Broderick, et al., 1974
Ambrose, D.; Broderick, B.E.; Townsend, R.,
The Critical Temperatures and Pressures of Thirty Organic Compounds,
J. Appl. Chem. Biotechnol., 1974, 24, 359. [all data]
Segura, Galindo, et al., 2002
Segura, Hugo; Galindo, Graciela; Reich, Ricardo; Wisniak, Jaime; Loras, Sonia,
Isobaric Vapor-Liquid Equilibria and Densities for the System Methyl 1,1-Dimethylethyl Ether +2-Propanol,
Physics and Chemistry of Liquids, 2002, 40, 3, 277-294, https://doi.org/10.1080/0031910021000004865
. [all data]
Aucejo, Loras, et al., 1998
Aucejo, Antonio; Loras, Sonia; Muñoz, Rosa; Reich, Ricardo; Segura, Hugo,
Isobaric Vapor-Liquid Equilibrium in the Systems 2-Methylpentane + Methyl 1,1-Dimethylethyl Ether, + Ethyl 1,1-Dimethylethyl Ether, and + Methyl 1,1-Dimethylpropyl Ether,
J. Chem. Eng. Data, 1998, 43, 6, 973-977, https://doi.org/10.1021/je980090b
. [all data]
Belaribi, Ait-Kaci, et al., 1995
Belaribi, F.B.; Ait-Kaci, A.; Jose, J.,
Equilibres liquide-vapeur isothermes de melanges binaires de la piperidine et de la N-methyl piperidine avec certains ethers,
Journal of Thermal Analysis, 1995, 44, 5, 1177-1194, https://doi.org/10.1007/BF02547548
. [all data]
Kraehenbuehl and Gmehling, 1994
Kraehenbuehl, M.A.; Gmehling, J.,
Vapor Pressures of Methyl tert-Butyl Ether, Ethyl tert-Butyl Ether, Isopropyl tert-Butyl Ether, tert-Amyl Methyl Ether, and tert-Amyl Ethyl Ether,
J. Chem. Eng. Data, 1994, 39, 4, 759-762, https://doi.org/10.1021/je00016a026
. [all data]
Wu, Pividal, et al., 1991
Wu, Huey S.; Pividal, Katherine A.; Sandler, Stanley I.,
Vapor-liquid equilibria of hydrocarbons and fuel oxygenates,
J. Chem. Eng. Data, 1991, 36, 4, 418-421, https://doi.org/10.1021/je00004a021
. [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]
Ambrose, Ellender, et al., 1976
Ambrose, D.; Ellender, J.H.; Sprake, C.H.S.; Townsend, R.,
Thermodynamic properties of organic oxygen compounds XLIII. Vapour pressures of some ethers,
The Journal of Chemical Thermodynamics, 1976, 8, 2, 165-178, https://doi.org/10.1016/0021-9614(76)90090-2
. [all data]
Andon and Martin, 1975, 2
Andon, R.J.L.; Martin, J.F.,
Thermodynamic properties of organic oxygen compounds. 40. Heat capacity and entropy of six ethers,
J. Chem. Thermodynam., 1975, 7, 593-606. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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