Diamyl phthalate
- Formula: C18H26O4
- Molecular weight: 306.3966
- IUPAC Standard InChI: InChI=1S/C18H26O4/c1-3-5-9-13-21-17(19)15-11-7-8-12-16(15)18(20)22-14-10-6-4-2/h7-8,11-12H,3-6,9-10,13-14H2,1-2H3
- IUPAC Standard InChIKey: IPKKHRVROFYTEK-UHFFFAOYSA-N
- CAS Registry Number: 131-18-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: 1,2-Benzenedicarboxylic acid, dipentyl ester; Phthalic acid, dipentyl ester; Amoil; Amyl phthalate; Di-n-pentyl phthalate; Dipentyl phthalate; di-n-Amyl phthalate; 1,2-Benzenedicarboxylic acid, 1,2-dipentyl ester; NSC 4720
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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°solid | -924. ± 13. | kJ/mol | Ccb | Ambler, 1936 | Reanalyzed by Cox and Pilcher, 1970, Original value = -911. ± 13. kJ/mol; Author's hf298=-218 kcal/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -9875. ± 13. | kJ/mol | Ccb | Ambler, 1936 | Reanalyzed by Cox and Pilcher, 1970, Original value = -9888. ± 13. kJ/mol; Author's hf298=-218 kcal/mol; Corresponding ΔfHºsolid = -924.33 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed phase thermochemistry 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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 99.4 | 318. | A,ME | Stephenson and Malanowski, 1987 | Based on data from 303. to 500. K. See also Small, Small, et al., 1948.; AC |
| 87.3 | 338. | T | Perry and Weber, 1949 | Based on data from 323. to 390. K.; AC |
| 99.2 | 373. | V | Small, Small, et al., 1948 | ALS |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ambler, 1936
Ambler, H.R.,
Heats of combustion and formation of dibutyl and diamyl phthalates,
J. Indian Chem. Soc., 1936, 55, 291-292. [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]
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]
Small, Small, et al., 1948
Small, P.A.; Small, K.W.; Cowley, P.,
The vapour pressures of some high boiling esters.,
Trans. Faraday Soc., 1948, 44, 810. [all data]
Perry and Weber, 1949
Perry, E.S.; Weber, W.H.,
Vapor Pressures of Phlegmatic Liquids. II. High Molecular Weight Esters and Silicone Oils,
J. Am. Chem. Soc., 1949, 71, 11, 3726-3730, https://doi.org/10.1021/ja01179a039
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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