Propane, 2-methyl-2-(1-methylethoxy)-
- Formula: C7H16O
- Molecular weight: 116.2013
- IUPAC Standard InChIKey: HNFSPSWQNZVCTB-UHFFFAOYSA-N
- CAS Registry Number: 17348-59-3
- 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: Ether, tert-butyl isopropyl; tert-Butyl isopropyl ether; Isopropyl tert-butyl ether; 2-Methyl-2-(1-methylethoxy)propane; (i-C3H7)O(t-C4H9); 2-isopropoxy-2-methylpropane
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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -358. ± 3. | kJ/mol | Ccb | Smutny and Bondi, 1961 | Heat of combustion corrected for pressure |
Condensed phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -393. ± 3. | kJ/mol | Ccb | Smutny and Bondi, 1961 | Heat of combustion corrected for pressure |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -4648.3 ± 2.8 | kJ/mol | Ccb | Smutny and Bondi, 1961 | Heat of combustion corrected for pressure; Corresponding ΔfHºliquid = -392.9 kJ/mol (simple calculation by NIST; no Washburn corrections) |
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, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 360.8 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 360.7 | K | N/A | Majer and Svoboda, 1985 | |
Tboil | 360.8 | K | N/A | Olson, Hipsher, et al., 1947 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tboil | 360.8 | K | N/A | Norris and Rigby, 1932 | Uncertainty assigned by TRC = 0.4 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 185.08 | K | N/A | Olson, Hipsher, et al., 1947 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 34.67 | kJ/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 36.2 | kJ/mol | CGC | Verevkin, Krasnykh, et al., 2003 | See also Verevkin, 2002 and Verevkin, Krasnykh, et al., 2003.; AC |
ΔvapH° | 34.4 ± 0.6 | kJ/mol | EB | Varushchenko, Pashchenko, et al., 2002 | Based on data from 305. to 360. K.; AC |
ΔvapH° | 34.5 ± 0.2 | kJ/mol | C | Varushchenko, Pashchenko, et al., 2002 | See also Dorofeeva, Yungman, et al., 2004.; AC |
ΔvapH° | 35.1 | kJ/mol | V | Smutny and Bondi, 1961 | Heat of combustion corrected for pressure; ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
30.5 | 360.7 | N/A | Majer and Svoboda, 1985 | |
34.0 | 322. | EB | Kraehenbuehl and Gmehling, 1994 | Based on data from 307. to 360. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.46 | 184.8 | Varushchenko, Druzhinina, et al., 2001 | See also Dorofeeva, Yungman, et al., 2004.; AC |
Reaction thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: C4H8 + C3H8O = C7H16O
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -22.9 ± 1.3 | kJ/mol | Eqk | Calderon, Tejero, et al., 1997 | liquid phase |
ΔrH° | -21.7 ± 1.6 | kJ/mol | Cm | Sola, Pericas, et al., 1997 | liquid phase |
Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 870.7 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 841.5 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.20 | PE | Aue and Bowers, 1979 | Vertical value; LLK |
Mass spectrum (electron ionization)
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY |
NIST MS number | 60738 |
Gas Chromatography
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Methyl Silicone | 100. | 644.6 | Boneva and Toromanova-Petrova, 1994 | Column length: 50. m; Column diameter: 0.25 mm |
Capillary | Methyl Silicone | 90. | 643.5 | Boneva and Toromanova-Petrova, 1994 | Column length: 50. m; Column diameter: 0.25 mm |
Packed | SE-30 | 120. | 665. | García-Raso, Martínez-Castro, et al., 1987 | N2, Supelcoport; Column length: 3. m |
Packed | Apiezon L | 120. | 631. | Bogoslovsky, Anvaer, et al., 1978 | Celite 545 |
Packed | Apiezon L | 160. | 636. | Bogoslovsky, Anvaer, et al., 1978 | Celite 545 |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Carbowax 20M | 120. | 720. | García-Raso, Martínez-Castro, et al., 1987 | N2, Supelcoport; Column length: 25. m; Column diameter: 0.22 mm |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | DB-5 | 60. | 668. | Verevkin, Krasnykh, et al., 2003 | 60. m/0.32 mm/0.25 μm, Nitrogen |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Squalane | 665. | Chen, 2008 | Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Packed | Carbowax 20M | 724. | Tsao, 1969 | Helium, Chromosorb P HMDS, 5. K/min; Column length: 2. m; Tstart: 40. C; Tend: 200. C |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Smutny and Bondi, 1961
Smutny, E.J.; Bondi, A.,
Di-t-butyl ether: Strain energy and physical properties,
J. Phys. Chem., 1961, 65, 546-550. [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]
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]
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]
Norris and Rigby, 1932
Norris, J.F.; Rigby, G.W.,
Reactivity of Atoms and Groups in Organic Compounds XII. The Preparation and Properties of Mixed Aliphatic Ethers with Special Reference to those Containing the Tert-Butyl Radical,
J. Am. Chem. Soc., 1932, 54, 2088. [all data]
Verevkin, Krasnykh, et al., 2003
Verevkin, Sergey P.; Krasnykh, Eugen L.; Vasiltsova, Tatiana V.; Heintz, Andreas,
Determination of Ambient Temperature Vapor Pressures and Vaporization Enthalpies of Branched Ethers,
J. Chem. Eng. Data, 2003, 48, 3, 591-599, https://doi.org/10.1021/je0255980
. [all data]
Verevkin, 2002
Verevkin, Sergey P.,
Improved Benson Increments for the Estimation of Standard Enthalpies of Formation and Enthalpies of Vaporization of Alkyl Ethers, Acetals, Ketals, and Ortho Esters,
J. Chem. Eng. Data, 2002, 47, 5, 1071-1097, https://doi.org/10.1021/je020023o
. [all data]
Varushchenko, Pashchenko, et al., 2002
Varushchenko, R.M.; Pashchenko, L.L.; Druzhinina, A.I.; Churkina, A.Yu.; Vorob'ev, I.I.; Kravchun, S.N.,
Zh. Fiz. Khim., 2002, 76, 4, 632. [all data]
Dorofeeva, Yungman, et al., 2004
Dorofeeva, O.V.; Yungman, V.S.; Varushchenko, R.M.; Druzhinina, A.I.,
Ideal Gas Thermodynamic Properties of Propyl tert-Butyl Ethers from Density Functional Theory Results Combined with Experimental Data,
International Journal of Thermophysics, 2004, 25, 4, 1097-1113, https://doi.org/10.1023/B:IJOT.0000038503.77644.a4
. [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]
Varushchenko, Druzhinina, et al., 2001
Varushchenko, R.M.; Druzhinina, A.I.; Churkina, A.Yu.; Zhi, C.-T.,
Zh. Fiz. Khim., 2001, 75, 8, 1351. [all data]
Calderon, Tejero, et al., 1997
Calderon, A.; Tejero, J.; Izuierdo, J.F.; Iborra, M.; Cunill, F.,
Equilibrium Constants for the liquid-phase synthesis of isopropyl tert-butyl ether from 2-propanol and isobutene,
Ind. Eng. Chem. Res., 1997, 36, 896-902. [all data]
Sola, Pericas, et al., 1997
Sola, L.; Pericas, M.A.; Cunill, F.; Izquierdo, J.F.,
A comparative thermodynamic and kinetic study of the reaction between olefins and light alcohols leading to branced ethers. Reaction calorimetry study of the formation of tert-amyl methyl ether (TAME) and tert-butyl isopropyl ether (IPTBE),
Ind. Eng. Chem. Res., 1997, 36, 2012-2018. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Aue and Bowers, 1979
Aue, D.H.; Bowers, M.T.,
Chapter 9. Stabilities of positive ions from equilibrium gas phase basicity measurements
in Ions Chemistry,, ed. M.T. Bowers, 1979. [all data]
Boneva and Toromanova-Petrova, 1994
Boneva, S.; Toromanova-Petrova, P.,
Capillary gas chromatography of C1-C4 alkyl tert-butyl ethers,
Chromatographia, 1994, 39, 3/4, 224-227, https://doi.org/10.1007/BF02274504
. [all data]
García-Raso, Martínez-Castro, et al., 1987
García-Raso, A.; Martínez-Castro, I.; Páez, M.I.; Sanz, J.; García-Raso, J.; Saura-Calixto, F.,
Gas Chromatographic Behaviour of Carbohydrate Trimethylsilyl Ethers. I. Aldopentoses,
J. Chromatogr., 1987, 398, 9-20, https://doi.org/10.1016/S0021-9673(01)96491-X
. [all data]
Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S.,
Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]
Chen, 2008
Chen, H.-F.,
Quantitative prediction of gas chromatography retention indices with support vector machines, radial basis neutral networks and multiple linear regression,
Anal. Chim. Acta, 2008, 609, 1, 24-36, https://doi.org/10.1016/j.aca.2008.01.003
. [all data]
Tsao, 1969
Tsao, J.C.Y.,
Prelimivary reports on structural study via mercury-sensitized photolysis and gas chromatography,
J. Chin. Chem. Soc., 1969, 16, 4, 152-163. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔrH° Enthalpy of reaction at standard conditions 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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