2(3H)-Furanone, dihydro-5,5-dimethyl-
- Formula: C6H10O2
- Molecular weight: 114.1424
- IUPAC Standard InChI: InChI=1S/C6H10O2/c1-6(2)4-3-5(7)8-6/h3-4H2,1-2H3
- IUPAC Standard InChIKey: NPHAVLULUWJQAS-UHFFFAOYSA-N
- CAS Registry Number: 3123-97-5
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: 4-Methylpentan-4-olide; Isocaprolactone; γ-Isocaprolactone; γ-Methyl-γ-valerolactone; γ,γ-Dimethyl-γ-butyrolactone; γ,γ-Dimethylbutyrolactone; Dihydro-5,5-dimethyl-2(3H)-furanone; Tetrahydro-5,5-dimethyl-2-furanone; 4-Methyl-4-hydroxypentanoic acid lactone; 4-Methyl-4-pentanolide; 4,4-dimethylbutan-4-olide; 5,5-Dimethyldihydrofuran-2(3H)-one; Pentanoic acid 4-hydroxy 4-methyl-γ-lactone; Valeric acid, 4-hydroxy-4-methyl-, g-lactone; 5,5-Dimethyldihydro-2(3H)-furanone
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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:
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 12.6 | 326. | A | Stephenson and Malanowski, 1987 | Based on data from 311. to 480. K.; 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 |
|---|---|---|---|---|---|
| 311.4 to 480. | 4.80053 | 2156.126 | -30.786 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
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. |
|---|---|
| NIST MS number | 32335 |
Gas Chromatography
Go To: Top, Phase change data, Mass spectrum (electron ionization), 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
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5 | 991.7 | Leffingwell and Alford, 2005 | 60. m/0.32 mm/0.25 μm, He, 30. C @ 2. min, 2. K/min, 260. C @ 28. min |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Nukol | 1628. | López and Dufour, 2001 | N2; Column length: 25. m; Column diameter: 0.25 mm; Program: 45C(5min) => 20C/min => 100C(1min) => 3C/min => 190C(40min) |
| Capillary | Carbowax 20M | 1615. | Teai, Claude-Lafontaine, et al., 2001 | 50. m/0.2 mm/0.2 μm, N2; Program: 60C => 2C/min => 150C => 4C/min => 220C |
References
Go To: Top, Phase change data, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Leffingwell and Alford, 2005
Leffingwell, J.C.; Alford, E.D.,
Volatile constituents of Perique tobacco,
Electron. J. Environ. Agric. Food Chem., 2005, 4, 2, 899-915. [all data]
López and Dufour, 2001
López, M.G.; Dufour, J.P.,
Chapter 6. Tequilas: charm analysis of Blanco, Teposado, and Anejo tequilas,
Am. Chem. Soc. Symp. Ser., 2001, 782, 62-72. [all data]
Teai, Claude-Lafontaine, et al., 2001
Teai, T.; Claude-Lafontaine, A.; Schippa, C.; Cozzolino, F.,
Volatile compounds in fresh pulp of pineapple (Ananas comosus [L.] Merr.) from French Polynesia,
J. Essent. Oil Res., 2001, 13, 5, 314-318, https://doi.org/10.1080/10412905.2001.9712222
. [all data]
Notes
Go To: Top, Phase change data, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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