p-Benzoquinone, 2-methyl-
- Formula: C7H6O2
- Molecular weight: 122.1213
- IUPAC Standard InChI: InChI=1S/C7H6O2/c1-5-4-6(8)2-3-7(5)9/h2-4H,1H3
- IUPAC Standard InChIKey: VTWDKFNVVLAELH-UHFFFAOYSA-N
- CAS Registry Number: 553-97-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: 2,5-Cyclohexadiene-1,4-dione, 2-methyl-; p-Toluquinone; Methyl-p-benzoquinone; Methyl-1,4-benzoquinone; Toluquinone; Tolylquinone; 2-Methyl-p-benzoquinone; 2-Methyl-1,4-benzoquinone; 2-Methylbenzoquinone; 2-Methylquinone; 1,4-Toluquinone; 2-Methyl-1,4-quinone; 2-Methylbenzoquinone-1,4; 2-Methyl-1,4-benzochinon; 1,4-Toluchinon; 2-Methyl-2,5-cyclohexadiene-1,4-dione; NSC 405002
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Gas Chromatography, 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔcH°solid | -803.2 | kcal/mol | Ccb | Swietoslawski and Starczedska, 1925 | Corresponding ΔfHºsolid = -60.1 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Gas Chromatography, 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: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 341.15 | K | N/A | Sabatier and Mailhe, 1909 | Uncertainty assigned by TRC = 2. K |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Phase change 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | SE-30 | 180. | 1008. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS; Column length: 2. m |
| Packed | SE-30 | 190. | 1015. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS; Column length: 2. m |
| Packed | SE-30 | 200. | 1018. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS; Column length: 2. m |
| Packed | SE-30 | 210. | 1025. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS; Column length: 2. m |
| Packed | SE-30 | 220. | 1031. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS; Column length: 2. m |
Kovats' RI, polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | Carbowax 20M | 180. | 1616. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS (60-80 mesh); Column length: 2. m |
| Packed | Carbowax 20M | 190. | 1624. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS (60-80 mesh); Column length: 2. m |
| Packed | Carbowax 20M | 200. | 1633. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS (60-80 mesh); Column length: 2. m |
| Packed | Carbowax 20M | 210. | 1640. | Llobera and García-Raso, 1987 | N2, Chromosorb P AW DMCS (60-80 mesh); Column length: 2. m |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Swietoslawski and Starczedska, 1925
Swietoslawski, W.; Starczedska, H.,
Correction des donnees thermochimiques de M.A. Valeur,
J. Chem. Phys., 1925, 22, 399-401. [all data]
Sabatier and Mailhe, 1909
Sabatier, P.; Mailhe, A.,
New Applications of the General Method of Hydrogenation with Various Metals,
Ann. Chim. Phys., 1909, 16, 70. [all data]
Llobera and García-Raso, 1987
Llobera, A.; García-Raso, A.,
Gas chromatographic behaviour of several p-quinones,
J. Chromatogr., 1987, 393, 2, 305-311, https://doi.org/10.1016/S0021-9673(01)94227-X
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔcH°solid Enthalpy of combustion of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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