Di-tert-Butyl ether
- Formula: C8H18O
- Molecular weight: 130.2279
- IUPAC Standard InChIKey: AQEFLFZSWDEAIP-UHFFFAOYSA-N
- CAS Registry Number: 6163-66-2
- 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: Propane, 2,2'-oxybis[2-methyl-; tert-Butyl ether; 2,2'-Oxybis-2-methyl-propane; (tert-C4H9)2O; 1,1'-Oxybis(1,1-dimethylethane)
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -361.1 ± 0.8 | kJ/mol | Ccr | Steele, Chirico, et al., 1996 | |
ΔfH°gas | -362.0 ± 1.6 | kJ/mol | Ccb | Fenwick, Harrop, et al., 1975 | |
ΔfH°gas | -361.9 ± 1.3 | kJ/mol | Ccb | Smutny and Bondi, 1961 | Reanalyzed by Cox and Pilcher, 1970, Original value = -364. ± 1. kJ/mol; 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -398.45 ± 0.72 | kJ/mol | Ccr | Steele, Chirico, et al., 1996 | ALS |
ΔfH°liquid | -399.6 ± 1.2 | kJ/mol | Ccb | Fenwick, Harrop, et al., 1975 | ALS |
ΔfH°liquid | -402. | kJ/mol | Ccb | Smutny and Bondi, 1961 | Heat of combustion corrected for pressure; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -5322.10 ± 0.61 | kJ/mol | Ccr | Steele, Chirico, et al., 1996 | Corresponding ΔfHºliquid = -398.45 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -5320.95 | kJ/mol | Ccb | Fenwick, Harrop, et al., 1975 | Corresponding ΔfHºliquid = -399.60 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -5318.3 ± 1.0 | kJ/mol | Ccb | Smutny and Bondi, 1961 | Heat of combustion corrected for pressure; Corresponding ΔfHºliquid = -402. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
276.1 | 298.15 | Fenwick, Harrop, et al., 1975, 2 | DH |
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:
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 | 379.9 | K | N/A | Erickson and Ashton, 1941 | Uncertainty assigned by TRC = 0.8 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 555. | K | N/A | Steele, Chirico, et al., 1996 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 24.25 | bar | N/A | Steele, Chirico, et al., 1996 | Uncertainty assigned by TRC = 1.50 bar; from extraploation of obs. vapor pressures to Tc; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 1.995 | mol/l | N/A | Steele, Chirico, et al., 1996 | Uncertainty assigned by TRC = 0.092 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 37.7 ± 0.3 | kJ/mol | EB | Steele, Chirico, et al., 1996 | Based on data from 290. to 386. K.; AC |
ΔvapH° | 37.2 | kJ/mol | N/A | Ambrose, Ellender, et al., 1976 | Based on data from 289. to 382. K.; AC |
ΔvapH° | 37.6 ± 0.9 | kJ/mol | C | Fenwick, Harrop, et al., 1975 | ALS |
ΔvapH° | 37.6 ± 0.1 | kJ/mol | C | Fenwick, Harrop, et al., 1975 | AC |
ΔvapH° | 38. | 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 |
---|---|---|---|---|
37.3 | 304. | A | Stephenson and Malanowski, 1987 | Based on data from 289. to 382. K. See also Ambrose, Ellender, et al., 1976.; AC |
38.7 | 292. | A | Stephenson and Malanowski, 1987 | Based on data from 277. to 382. K. See also Smutny and Bondi, 1961.; AC |
31.6 | 380. | N/A | Ambrose, Ellender, et al., 1976 | Based on data from 289. to 382. 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 |
---|---|---|---|---|---|
277. to 382. | 3.71448 | 1157.714 | -70.097 | Smutny and Bondi, 1961 | Coefficents calculated by NIST from author's data. |
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
L - 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 |
---|---|---|---|---|---|
IE (evaluated) | 8.88 ± 0.06 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 887.4 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 860.0 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.81 | PE | Brown, 1975 | LLK |
8.94 ± 0.01 | PE | Cocksey, Eland, et al., 1971 | LLK |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Steele, Chirico, et al., 1996
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Smith, N.K.,
Thermodynamic properties and ideal-gas enthalpies of formation for butyl vinyl ether, 1,2-dimethoxyethane, methyl glycolate, bicyclo[2.2.1]hept-2-ene, 5-vinylbicyclo[2.2.1]hept-2-ene, trans-azobenzene, butyl acrylate, di-tert-butyl ether, and hexane-1,6-diol,
J. Chem. Eng. Data, 1996, 41, 1285-1302. [all data]
Fenwick, Harrop, et al., 1975
Fenwick, J.O.; Harrop, D.; Head, A.J.,
Thermodynamic properties of organic oxygen compounds. 41. Enthalpies of formation of eight ethers,
J. Chem. Thermodyn., 1975, 7, 943-954. [all data]
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]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Fenwick, Harrop, et al., 1975, 2
Fenwick, J.O.; Harrop, D.; Head, A.J.,
Thermodynamic properties of organic oxygen compounds. 41. Enthalpies of formation of eight ethers,
J. Chem. Thermodynam., 1975, 7, 944-954. [all data]
Erickson and Ashton, 1941
Erickson, J.L.E.; Ashton, W.H.,
Di-tertiary Butyl Ether,
J. Am. Chem. Soc., 1941, 63, 1769. [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]
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]
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]
Brown, 1975
Brown, R.S.,
A photoelectron investigation of the peroxide bond,
Can. J. Chem., 1975, 53, 3439. [all data]
Cocksey, Eland, et al., 1971
Cocksey, B.J.; Eland, J.H.D.; Danby, C.J.,
The effect of alkyl substitution on ionisation potential,
J. Chem. Soc., 1971, (B), 790. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid IE (evaluated) Recommended ionization energy Pc Critical pressure Tboil Boiling point Tc Critical temperature 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 ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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