Benzeneacetic acid
- Formula: C8H8O2
- Molecular weight: 136.1479
- IUPAC Standard InChIKey: WLJVXDMOQOGPHL-UHFFFAOYSA-N
- CAS Registry Number: 103-82-2
- 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: Acetic acid, phenyl-; α-Toluic acid; Benzenacetic acid; Phenylacetic acid; ω-Phenylacetic acid; Phenylethanoic acid; Kyselina fenyloctova; 2-Phenylacetic acid; NSC 125718
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Phase change data
Go To: Top, IR Spectrum, 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 as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 538.7 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 348. | K | N/A | Henne and Hill, 1943 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 349.15 | K | N/A | Adams and Marshall, 1928 | Uncertainty assigned by TRC = 1. K; TRC |
Tfus | 350. | K | N/A | Robertson, 1902 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 348.05 | K | N/A | Bruner, 1894 | Uncertainty assigned by TRC = 0.6 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 18.9 ± 0.07 | kcal/mol | GS | Roux *, Temprado, et al., 2004 | Based on data from 353. to 392. K.; AC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 22.3 ± 0.07 | kcal/mol | GS | Roux *, Temprado, et al., 2004 | Based on data from 307. to 339. K.; AC |
ΔsubH° | 23.7 ± 0.1 | kcal/mol | ME | Monte and Hillesheim, 2001 | Based on data from 305. to 321. K.; AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
15.5 | 385. | A | Stephenson and Malanowski, 1987 | Based on data from 370. to 539. K.; AC |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
23.6 ± 0.1 | 313. | ME | Monte and Hillesheim, 2001 | Based on data from 305. to 321. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
3.63 | 349.2 | N/A | Gracin and Rasmuson, 2002 | AC |
3.94 | 350.8 | N/A | Monte and Hillesheim, 2001 | AC |
3.463 | 349.9 | DSC | Acree, 1991 | There is a large discrepancy between the value of 32.0 kJ/mole and the other reported literature values. Reference Sharma, Kant, et al., 2003 quotes a literature value of 32.0 kJ/mole; however, the authors do not provide the source of the cited literature value.; AC |
IR Spectrum
Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Phase change data, IR 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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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 | NIST Mass Spectrometry Data Center |
NIST MS number | 352514 |
References
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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]
Henne and Hill, 1943
Henne, A.L.; Hill, P.,
The Preparatioon of Aldehydes, Ketones, and Acids by Ozone Oxidation,
J. Am. Chem. Soc., 1943, 65, 752-4. [all data]
Adams and Marshall, 1928
Adams, R.; Marshall, J.R.,
The Use of Platinum-Oxide Platinum Black in the Catalytic Reduction of Aromatic Hydrocarbons XVII.,
J. Am. Chem. Soc., 1928, 50, 1970. [all data]
Robertson, 1902
Robertson, P.W.,
Atomic and molecular heats of fusion.,
J. Chem. Soc., 1902, 81, 1233. [all data]
Bruner, 1894
Bruner, L.,
The heats of fusion of some organic compounds,
Ber. Dtsch. Chem. Ges., 1894, 27, 2102. [all data]
Roux *, Temprado, et al., 2004
Roux *, Maria Victoria; Temprado, Manuel; Notario, Rafael; Verevkin, Sergey P.; Emel'yanenko, Vladimir N.; Demasters, Douglas E.; Liebman, Joel F.,
The energetics of naphthalene derivatives, III: phenylacetic acid and the isomeric 1- and 2-naphthylacetic acids,
Molecular Physics, 2004, 102, 18, 1909-1917, https://doi.org/10.1080/00268970412331284262
. [all data]
Monte and Hillesheim, 2001
Monte, Manuel J.S.; Hillesheim, Dorothea M.,
Thermodynamic Study on the Sublimation of 2-Phenylacetic, 4-Phenylbutyric, and 5-Phenylvaleric Acid,
J. Chem. Eng. Data, 2001, 46, 6, 1601-1604, https://doi.org/10.1021/je010153h
. [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]
Gracin and Rasmuson, 2002
Gracin, Sandra; Rasmuson, Åke C.,
Solubility of Phenylacetic Acid, p -Hydroxyphenylacetic Acid, p -Aminophenylacetic Acid, p -Hydroxybenzoic Acid, and Ibuprofen in Pure Solvents,
J. Chem. Eng. Data, 2002, 47, 6, 1379-1383, https://doi.org/10.1021/je0255170
. [all data]
Acree, 1991
Acree, William E.,
Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation,
Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H
. [all data]
Sharma, Kant, et al., 2003
Sharma, B.L.; Kant, Rajesh; Sharma, Ritu; Tandon, Sonika,
Deviations of binary organic eutectic melt systems,
Materials Chemistry and Physics, 2003, 82, 1, 216-224, https://doi.org/10.1016/S0254-0584(03)00199-8
. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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