Benzene, 1,2-dimethoxy-
- Formula: C8H10O2
- Molecular weight: 138.1638
- IUPAC Standard InChIKey: ABDKAPXRBAPSQN-UHFFFAOYSA-N
- CAS Registry Number: 91-16-7
- 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: Benzene, o-dimethoxy-; o-Dimethoxybenzene; O,O-Dimethyl catechol; Pyrocatechol dimethyl ether; Veratrol; Veratrole; 1,2-Dimethoxybenzene; Dimethylether pyrokatechinu; Orthodimethoxybenzene; 2-Methoxyanisole; Catechol dimethyl ether; NSC 16934; Methylguaiacol; 1,2-Dimethoxybenzene (veratroI); 1,2-Dimethoxybenzene (veratrole); 1,2-Dimethoxybenzene (Veratrol)
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔcH°liquid | -4286.9 ± 2.1 | kJ/mol | Ccb | Cass, Fletcher, et al., 1958 | Reanalyzed by Cox and Pilcher, 1970, Original value = -4284. ± 2. kJ/mol; Corresponding ΔfHºliquid = -290.3 kJ/mol (simple calculation by NIST; no Washburn corrections) |
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
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 |
---|---|---|---|---|---|
Tboil | 479.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 480. | K | N/A | Buckingham and Donaghy, 1982 | BS |
Tboil | 299.95 | K | N/A | Lecat, 1943 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tboil | 478.7 | K | N/A | Lecat, 1927 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tboil | 480.25 | K | N/A | Perkin, 1896 | Uncertainty assigned by TRC = 1. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 288. | K | N/A | Buckingham and Donaghy, 1982 | BS |
Tfus | 295.65 | K | N/A | Deffet, 1940 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 295.65 | K | N/A | Cauwood and Turner, 1915 | Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 296. | K | N/A | Louguinine and Dupont, 1911 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 68.1 ± 1.4 | kJ/mol | C | Matos, Miranda, et al., 2000 | AC |
ΔvapH° | 66.9 | kJ/mol | V | Cass, Fletcher, et al., 1958 | ALS |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
363.2 | 0.013 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
52.7 | 388. | N/A | Based on data from 373. to 468. K. See also Lee, Su, et al., 2004.; AC |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cass, Fletcher, et al., 1958
Cass, R.C.; Fletcher, S.E.; Mortimer, C.T.; Quincey, P.G.; Springall, H.D.,
Heats of combustion and molecular structure. Part VI. The structure of some cyclic ethers of o-dihydroxybenzene,
J. Chem. Soc., 1958, 2595-2597. [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]
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]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Lecat, 1943
Lecat, M.,
Azeotropes of Ethyl Urethane and other Azeotropes,
C. R. Hebd. Seances Acad. Sci., 1943, 217, 273. [all data]
Lecat, 1927
Lecat, M.,
New binary azeotropes: 6th list,
Ann. Soc. Sci. Bruxelles, Ser. B, 1927, 47, 63-71. [all data]
Perkin, 1896
Perkin, W.H.,
LXIX. On Magnetic Rotatory Power, especially of Aromatic Compounds,
J. Chem. Soc., 1896, 69, 1025-1257. [all data]
Deffet, 1940
Deffet, L.,
Piezometric Research. Temperatures of Fusion and Transformation,
Bull. Soc. Chim. Belg., 1940, 49, 223. [all data]
Cauwood and Turner, 1915
Cauwood, J.D.; Turner, W.E.S.,
XXXI. The Dielectric Constants of Some Organic Solvents at their Melting or Boiling Points,
J. Chem. Soc., Trans., 1915, 107, 276. [all data]
Louguinine and Dupont, 1911
Louguinine, W.; Dupont, G.,
The heat of fusion of substances which melt at ordinary temperatures.,
Bull. Soc. Chim. Fr., 1911, 9, 219-224. [all data]
Matos, Miranda, et al., 2000
Matos, M.A.R.; Miranda, M.S.; Morais, V.M.F.,
Calorimetric and Theoretical Determination of Standard Enthalpies of Formation of Dimethoxy- and Trimethoxybenzene Isomers,
J. Phys. Chem. A, 2000, 104, 40, 9260-9265, https://doi.org/10.1021/jp001928g
. [all data]
Lee, Su, et al., 2004
Lee, Ming-Jer; Su, Chang-Ching; Lin, Ho-mu,
Isothermal Vapor-Liquid Equilibria for Binary Mixtures Composed of the Closely Boiling Compounds 1,2-Dimethoxybenzene and 2-Methoxyphenol with an Adducted Agent: tert -Butanol or Morpholine,
J. Chem. Eng. Data, 2004, 49, 3, 588-593, https://doi.org/10.1021/je0302349
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid 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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