1,4-Benzenediol, 2,5-dimethyl-
- Formula: C8H10O2
- Molecular weight: 138.1638
- IUPAC Standard InChI: InChI=1S/C8H10O2/c1-5-3-8(10)6(2)4-7(5)9/h3-4,9-10H,1-2H3
- IUPAC Standard InChIKey: GPASWZHHWPVSRG-UHFFFAOYSA-N
- CAS Registry Number: 615-90-7
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Phen-1,4-diol, 3,6-dimethyl-; 2,5-dimethylhydroquinone; p-Xylohydroquinone
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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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 100.8 | kJ/mol | V | Coolidge and Coolidge, 1927 | ALS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 101.1 | 346. | A | Stephenson and Malanowski, 1987 | Based on data from 331. to 361. K.; AC |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 100.8 | 332. to 361. | QF | Coolidge and Coolidge, 1927 | See also Jones, 1960.; AC |
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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| 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, 1994 |
| NIST MS number | 133482 |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Coolidge and Coolidge, 1927
Coolidge, A.S.; Coolidge, M.S.,
The sublimation pressures of substituted quinones and hydroquinones,
J. Am. Chem. Soc., 1927, 49, 100-104. [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]
Jones, 1960
Jones, A.H.,
Sublimation Pressure Data for Organic Compounds.,
J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019
. [all data]
Notes
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- Symbols used in this document:
ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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