Dibutyl phthalate
- Formula: C16H22O4
- Molecular weight: 278.3435
- IUPAC Standard InChI: InChI=1S/C16H22O4/c1-3-5-11-19-15(17)13-9-7-8-10-14(13)16(18)20-12-6-4-2/h7-10H,3-6,11-12H2,1-2H3
- IUPAC Standard InChIKey: DOIRQSBPFJWKBE-UHFFFAOYSA-N
- CAS Registry Number: 84-74-2
- 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: 1,2-Benzenedicarboxylic acid, dibutyl ester; Phthalic acid, dibutyl ester; n-Butyl phthalate; Butyl phthalate; Celluflex DPB; Elaol; Genoplast B; Hexaplas M/B; Palatinol C; Polycizer DBP; PX 104; Staflex DBP; Unimoll DB; Witcizer 300; Benzene-o-dicarboxylic acid, di-n-butyl ester; o-Benzenedicarboxylic acid, dibutyl ester; Dibutyl-1,2-benzenedicarboxylate; di-n-Butyl phthalate; Phthalic acid di-n-butyl ester; Dibutyl o-phthalate; DBP; RCRA waste number U069; Dibutyl ester of 1,2-benzenedicarboxylic acid; Kodaflex DBP; Morflex 240; Palatinol DBP; Uniplex 150; Dibutyl phthalated; 1,2-Benzenedicarboxylic acid, 1,2-dibutyl ester; DBP (ester); Ergoplast FDB; NSC 6370
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Gas phase thermochemistry 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 by: Donald R. Burgess, Jr.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -686.3 | kJ/mol | N/A | Taylor, Hall, et al., 1947 | Value computed using ΔfHliquid° value of -778 kj/mol from Taylor, Hall, et al., 1947 and ΔvapH° value of 91.7±4.6 kj/mol from missing citation. |
Condensed phase thermochemistry data
Go To: Top, Gas 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:
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 | -778. | kJ/mol | Ccb | Taylor, Hall, et al., 1947 | At 290 °K, corrected hf; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -8661. | kJ/mol | Ccb | Taylor, Hall, et al., 1947 | At 290 °K, corrected hf; Corresponding ΔfHºliquid = -778. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 561.1 | J/mol*K | N/A | Rabinovich, Novoselova, et al., 1985 | DH |
| S°liquid | 933.0 | J/mol*K | N/A | Rabinovich, Martynenko, et al., 1969 | DH |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -843. ± 13. | kJ/mol | Ccb | Ambler, 1936 | Reanalyzed by Cox and Pilcher, 1970, Original value = -827. ± 13. kJ/mol; Author's hf298=-198 kcal/mol; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -8598. ± 13. | kJ/mol | Ccb | Ambler, 1936 | Reanalyzed by Cox and Pilcher, 1970, Original value = -8613. ± 13. kJ/mol; Author's hf298=-198 kcal/mol; Corresponding ΔfHºsolid = -842.57 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 514.6 | J/mol*K | N/A | Martynenko, Rabinovich, et al., 1970 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 476.0 | 298.15 | Rabinovich, Novoselova, et al., 1985 | T = 14 to 300 K.; DH |
| 477.0 | 300. | Rabinovich, Martynenko, et al., 1969 | T = 60 to 360 K.; DH |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 477.0 | 300. | Martynenko, Rabinovich, et al., 1970 | T = 60 to 360 K.; DH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Taylor, Hall, et al., 1947
Taylor, J.; Hall, C.R.L.; Thomas, H.,
The thermochemistry of propellent explosives,
J. Phys. Colloid Chem., 1947, 51, 580-592. [all data]
Rabinovich, Novoselova, et al., 1985
Rabinovich, I.B.; Novoselova, N.V.; Moseeva, E.M.; Babinkov, A.G.; Tsvetkova, L.Ya.,
Low temperature specific heat and thermodynamic functions of dibutyl and dioctyl phthalate,
Zhur. Fiz. Khim., 1985, 59, 2127-2130. [all data]
Rabinovich, Martynenko, et al., 1969
Rabinovich, I.E.; Martynenko, L.Ya.; Maslova, V.A.,
Specific heat and physical properties of some dialkyl phthalates,
Tr. Khim. Khim. Tekhnol. 1969, 1969, No.2, 10-14. [all data]
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]
Martynenko, Rabinovich, et al., 1970
Martynenko, L.Ya.; Rabinovich, I.B.; Ovchinnikov, Yu.V.; Maslova, V.A.,
Heat capacity of the systems polyvinyl chloride-dioctylphthalate and polyvinyl chloride-dibutylphthalate,
Polymer Sci., 1970, USSR 12A, 952-961. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid S°liquid Entropy of liquid at standard conditions S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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