Phthalan
- Formula: C8H8O
- Molecular weight: 120.1485
- IUPAC Standard InChIKey: SFLGSKRGOWRGBR-UHFFFAOYSA-N
- CAS Registry Number: 496-14-0
- 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: 1,3-Dihydro isobenzofuran; Isobenzofuran, 1,3-dihydro-; Isobenzofuran
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Gas 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°gas | -30.1 ± 1.0 | kJ/mol | Ccr | Steele, Chirico, et al., 1996 |
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 | -83.83 ± 0.93 | kJ/mol | Ccr | Steele, Chirico, et al., 1996 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -4207.57 ± 0.54 | kJ/mol | Ccr | Steele, Chirico, et al., 1996 | Corresponding ΔfHºliquid = -83.83 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 |
---|---|---|---|
188.7 | 298.15 | Steele, Chirico, et al., 1993 | 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 465.2 | K | N/A | Aldrich Chemical Company Inc., 1990 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 700. | K | N/A | Steele, Chirico, et al., 1996, 2 | Uncertainty assigned by TRC = 4. K; fitting parameter in Wagner equation for vapor pressure; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 42.85 | bar | N/A | Steele, Chirico, et al., 1996, 2 | Uncertainty assigned by TRC = 4.00 bar; from extrapolation of obs. vapor pressure to Tc; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 2.807 | mol/l | N/A | Steele, Chirico, et al., 1996, 2 | Uncertainty assigned by TRC = 0.17 mol/l; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 53.74 ± 0.42 | kJ/mol | V | Steele, Chirico, et al., 1996 | ALS |
ΔvapH° | 53.7 | kJ/mol | N/A | Steele, Chirico, et al., 1996 | DRB |
ΔvapH° | 53.7 ± 0.4 | kJ/mol | EB | Steele, Chirico, et al., 1996 | Based on data from 285. to 510. K.; AC |
IR Spectrum
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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
Gas Phase Spectrum
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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | NIST Mass Spectrometry Data Center |
State | gas |
Instrument | HP-GC/MS/IRD |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, UV/Visible spectrum, 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
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. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-8386 |
NIST MS number | 229248 |
UV/Visible spectrum
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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: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina
Spectrum
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Additional Data
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Source | Entel, Ruof, et al., 1952 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 438 |
Instrument | n.i.g. |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, 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.; Tasker, I.R.,
Thermodynamic properties and ideal-gas enthalpies of formation for cyclohexene, phthalan (2,5-dihydrobenzo-3,4-furan), isoxazole, octylamine, dioctylamine, trioctylamine, phenyl isocyanate, and 1,4,5,6-tetrahydropyrimidine,
J. Chem. Eng. Data, 1996, 41, 1269-1284. [all data]
Steele, Chirico, et al., 1993
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Tasker, I.R.,
Determination of ideal gas enthalpies of formation for key compounds the 1991 project results,
DIPPR Project, 1993, 871, NIPER-716. [all data]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Steele, Chirico, et al., 1996, 2
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Smith, N.K.; Tasker, I.R.,
Thermodynamic Properties and Ideal-Gas Enthalpies of Formation for Dioctylamine, trioctylamine, Phenyl Isocyanate, and 1,4,5,6-Tetrahydropyrimidine,
J. Chem. Eng. Data, 1996, 41, 1269-84. [all data]
Entel, Ruof, et al., 1952
Entel, J.; Ruof, C.H.; Howard, H.C.,
The nature of oxygen in coal: preparation and properties of phthalan,
J. Am. Chem. Soc., 1952, 74, 441-444. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid 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 at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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