Propanoic acid, 2-methyl-, 1-methylethyl ester
- Formula: C7H14O2
- Molecular weight: 130.1849
- IUPAC Standard InChIKey: WVRPFQGZHKZCEB-UHFFFAOYSA-N
- CAS Registry Number: 617-50-5
- 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: Isobutyric acid, isopropyl ester; Isopropyl isobutyrate; iso-C3H7C(O)OCH(CH3)2; Isopropyl 2-methylpropanoate; UN 2406; Isopropyl isobutanoate
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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
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 393.9 | K | N/A | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
10.3 | 272. | A | Stephenson and Malanowski, 1987 | Based on data from 257. to 394. K. See also Stull, 1947.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
256.9 to 393.7 | 4.34015 | 1488.585 | -50.731 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 80. | 783. | Komárek, Hornová, et al., 1983 | Column length: 15. m; Column diameter: 0.22 mm |
Packed | SE-30 | 150. | 780. | Ashes and Haken, 1974 | Celaton (62-72 mesh); Column length: 3.7 m |
Packed | SE-30 | 100. | 784. | Chastrette, Heintz, et al., 1974 | N2, Chromosorb W AW (60-80 mesh); Column length: 3. m |
Packed | OV-1 | 150. | 785. | Ashes and Haken, 1971 | |
Packed | SE-30 | 150. | 785. | Germaine and Haken, 1969 | Celite 560; Column length: 3.7 m |
Kovats' RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | SE-30 | 780. | Chretien and Dubois, 1978 | Program: not specified |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | Carbowax 20M | 100. | 959. | Chastrette, Heintz, et al., 1974 | Chromosorb WAW (60-80 mesh); Column length: 3. m |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | SE-30 | 780. | Liu, Liang, et al., 2007 | Program: not specified |
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.
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]
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]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Komárek, Hornová, et al., 1983
Komárek, K.; Hornová, L.; Horna, A.; Churácek, J.,
Glass capillary gas chromatography of homologous series of esters. IV. Separation of homologous series of certain halogenopropyl esters of aliphatic carboxylic acids on OV-101,
J. Chromatogr., 1983, 281, 299-303, https://doi.org/10.1016/S0021-9673(01)87889-4
. [all data]
Ashes and Haken, 1974
Ashes, J.R.; Haken, J.K.,
Gas chromatography of homologous esters. VI. Structure-retention increments of aliphatic esters,
J. Chromatogr., 1974, 101, 1, 103-123, https://doi.org/10.1016/S0021-9673(01)94737-5
. [all data]
Chastrette, Heintz, et al., 1974
Chastrette, M.; Heintz, M.; Druilhe, A.; Lefort, D.,
Analyse chromatographique d'esters aliphatiques saturés. Relations rétention-structure et prévision de la rétention,
Bull. Soc. Chim. Fr., 1974, 9/10,Pt.1, 1852-1856. [all data]
Ashes and Haken, 1971
Ashes, J.R.; Haken, J.K.,
Gas chromatography of homologous esters. Part V. Retention of aliphatic esters on non-polar, donar and acceptor stationary phases,
J. Chromatogr., 1971, 60, 33-44, https://doi.org/10.1016/S0021-9673(00)95527-4
. [all data]
Germaine and Haken, 1969
Germaine, R.W.; Haken, J.K.,
Gas chromatography of homologous esters. Part 1. Simple aliphatic esters,
J. Chromatogr., 1969, 43, 33-42, https://doi.org/10.1016/S0021-9673(00)99162-3
. [all data]
Chretien and Dubois, 1978
Chretien, J.R.; Dubois, J-E.,
Topological Analysis: A Technique for the Physico-Chemical Exploitation of Retention Data in Gas-Liquid Chromatography,
J. Chromatogr., 1978, 158, 43-56, https://doi.org/10.1016/S0021-9673(00)89954-9
. [all data]
Liu, Liang, et al., 2007
Liu, F.; Liang, Y.; Cao, C.; Zhou, N.,
QSPR study of GC retention indices for saturated esters on seven stationary phases based on novel topological indices,
Talanta, 2007, 72, 4, 1307-1315, https://doi.org/10.1016/j.talanta.2007.01.038
. [all data]
Notes
Go To: Top, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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