Selected ATcT [1, 2] enthalpy of formation based on version 1.130 of the Thermochemical Network [3]

This version of ATcT results[4] was generated by additional expansion of version 1.128 [5,6] to include with the calculations provided in reference [4].

Methanol

Formula: CH3OH (g)
CAS RN: 67-56-1
ATcT ID: 67-56-1*0
SMILES: CO
InChI: InChI=1S/CH4O/c1-2/h2H,1H3
InChIKey: OKKJLVBELUTLKV-UHFFFAOYSA-N
Hills Formula: C1H4O1

2D Image:

CO
Aliases: CH3OH; Methanol; Carbinol; Methylol; Methyl alcohol; Methyl hydroxide; Wood alcohol; H3COH; MeOH; CH3OH g; CH3OH l; CH3OH cr, l; CH3OH cr,l
Relative Molecular Mass: 32.04186 ± 0.00090

   ΔfH°(0 K)   ΔfH°(298.15 K)UncertaintyUnits
-190.03-200.92± 0.15kJ/mol

3D Image of CH3OH (g)

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Top contributors to the provenance of ΔfH° of CH3OH (g)

The 20 contributors listed below account only for 57.8% of the provenance of ΔfH° of CH3OH (g).
A total of 369 contributors would be needed to account for 90% of the provenance.

Please note: The list is limited to 20 most important contributors or, if less, a number sufficient to account for 90% of the provenance. The Reference acts as a further link to the relevant references and notes for the measurement. The Measured Quantity is normaly given in the original units; in cases where we have reinterpreted the original measurement, the listed value may differ from that given by the authors. The quoted uncertainty is the a priori uncertainty used as input when constructing the initial Thermochemical Network, and corresponds either to the value proposed by the original authors or to our estimate; if an additional multiplier is given in parentheses immediately after the prior uncertainty, it corresponds to the factor by which the prior uncertainty needed to be multiplied during the ATcT analysis in order to make that particular measurement consistent with the prevailing knowledge contained in the Thermochemical Network.

Contribution
(%)
TN
ID
Reaction Measured Quantity Reference
15.92859.2 CH3OH (g) + 3/2 O2 (g) → CO2 (g) + 2 H2O (cr,l) ΔrH°(298.15 K) = -182.72 ± 0.05 (×1.646) kcal/molRossini 1932a, Domalski 1972, Weltner 1951, Rossini 1934a, note old units, mw conversion
7.92909.1 [CH2OH]+ (g) → CH2O (g) H+ (g) ΔrH°(0 K) = 704.98 ± 0.39 kJ/molCzako 2009
3.82861.1 CH3OH (g) → CH4 (g) O (g, singlet) ΔrH°(0 K) = 133.94 ± 0.17 kcal/molNguyen 2015a
3.52860.1 CH3OH (g) → CH3 (g) OH (g) ΔrH°(0 K) = 90.12 ± 0.17 kcal/molNguyen 2015a
3.32863.1 CH3OH (g) → CH2 (g, triplet) H2O (g) ΔrH°(0 K) = 81.77 ± 0.17 kcal/molNguyen 2015a
3.32862.1 CH3OH (g) → CH2 (g, singlet) H2O (g) ΔrH°(0 K) = 90.84 ± 0.17 kcal/molNguyen 2015a
3.22933.1 CH3OH (g) → CH2O (g) H2 (g) ΔrH°(0 K) = 20.28 ± 0.17 kcal/molNguyen 2015a
2.92867.1 CH3OH (cr,l) + 3/2 O2 (g) → CO2 (g) + 2 H2O (cr,l) ΔrH°(303.15 K) = -725.36 ± 0.13 (×6.169) kJ/molChao 1965, mw conversion
2.52979.6 CH3OH (g) → HCOH (g, trans) H2 (g) ΔrH°(0 K) = 72.44 ± 0.17 kcal/molNguyen 2015a
1.32572.8 CH3NH2 (g) H2O (g) → CH3OH (g) NH3 (g) ΔrH°(0 K) = 4.07 ± 0.25 kcal/molKarton 2011
1.32907.1 CH3OH (g) → [CH2OH]+ (g) H (g) ΔrH°(0 K) = 11.6454 ± 0.0017 eVBorkar 2011
1.22279.1 H2 (g) C (graphite) → CH4 (g) ΔrG°(1165 K) = 37.521 ± 0.068 kJ/molSmith 1946, note COf, 3rd Law
1.22852.11 CH3OH (g) → 4 H (g) C (g) O (g) ΔrH°(0 K) = 480.94 ± 0.30 kcal/molKarton 2011
1.0121.2 1/2 O2 (g) H2 (g) → H2O (cr,l) ΔrH°(298.15 K) = -285.8261 ± 0.040 kJ/molRossini 1939, Rossini 1931, Rossini 1931b, note H2Oa, Rossini 1930
0.92908.1 CH2OH (g) → CH2O (g) H (g) ΔrH°(0 K) = 10160 ± 70 cm-1Ryazanov 2012
0.82878.6 CH2OH2 (g) → CH3OH (g) ΔrH°(0 K) = -81.83 ± 0.17 kcal/molNguyen 2015a
0.82908.10 CH2OH (g) → CH2O (g) H (g) ΔrH°(0 K) = 121.88 ± 0.46 (×1.915) kJ/molMarenich 2003b, note unc2
0.82858.1 CH4 (g) H2O (g) → CH3OH (g) H2 (g) ΔrH°(0 K) = 115.40 ± 1.5 kJ/molKlippenstein 2017
0.72880.7 CH2OH2 (g) → CH2 (g, singlet) H2O (g) ΔrH°(0 K) = 9.01 ± 0.17 kcal/molNguyen 2015a
0.63001.11 [HCO]+ (g) → H+ (g) CO (g) ΔrH°(0 K) = 586.51 ± 0.2 kJ/molCzako 2008

Top 10 species with enthalpies of formation correlated to the ΔfH° of CH3OH (g)

Please note: The correlation coefficients are obtained by renormalizing the off-diagonal elements of the covariance matrix by the corresponding variances.
The correlation coefficient is a number from -1 to 1, with 1 representing perfectly correlated species, -1 representing perfectly anti-correlated species, and 0 representing perfectly uncorrelated species.


Correlation
Coefficent
(%)
Species Name Formula Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass
ATcT ID
97.9 MethanolCH3OH (cr,l)CO-235.28-238.61± 0.15kJ/mol32.04186 ±
0.00090
67-56-1*500
70.9 Hydroxymethylium[CH2OH]+ (g)[CH2+]O717.68709.73± 0.19kJ/mol31.03337 ±
0.00088
18682-95-6*0
44.9 Methanol cation[CH3OH]+ (g)[CH3+]O856.82846.50± 0.32kJ/mol32.04131 ±
0.00090
12538-91-9*0
37.5 MethoxyCH3O (g)C[O]28.9321.56± 0.27kJ/mol31.03392 ±
0.00088
2143-68-2*0
37.5 Methoxide[CH3O]- (g)C[O-]-122.46-130.19± 0.27kJ/mol31.03447 ±
0.00088
3315-60-4*0
36.0 HydroxymethylCH2OH (g)[CH2]O-10.36-16.66± 0.28kJ/mol31.03392 ±
0.00088
2597-43-5*0
28.9 Methyl nitriteCH3ONO (g)CON=O-55.49-66.16± 0.44kJ/mol61.0401 ±
0.0010
624-91-9*0
28.9 Methyl nitriteCH3ONO (g, cis)CON=O-55.49-67.28± 0.44kJ/mol61.0401 ±
0.0010
624-91-9*2
22.8 Methyl nitriteCH3ONO (cr,l)CON=O-88.73± 0.55kJ/mol61.0401 ±
0.0010
624-91-9*500
21.5 Methanol dimer(CH3OH)2 (g)CO.CO-398.5-419.2± 1.4kJ/mol64.0837 ±
0.0018
42845-44-3*0

Most Influential reactions involving CH3OH (g)

Please note: The list, which is based on a hat (projection) matrix analysis, is limited to no more than 20 largest influences.

Influence
Coefficient
TN
ID
Reaction Measured Quantity Reference
0.9896603.2 [C6H5CH2]- (g) CH3OH (g) → C6H5CH3 (g) [CH3O]- (g) ΔrG°(300 K) = 0.16 ± 0.02 kcal/molEllison 1996
0.7707046.2 CH3OH (g) + 2 ONO (g) → HON(O)O (g) CH3ONO (g) ΔrG°(393.95 K) = -0.865 ± 0.105 kcal/molSilverwood 1967, 3rd Law
0.6112907.1 CH3OH (g) → [CH2OH]+ (g) H (g) ΔrH°(0 K) = 11.6454 ± 0.0017 eVBorkar 2011
0.4952855.8 [CH3OH]- (g) → CH3OH (g) ΔrH°(0 K) = -1.062 ± 0.040 eVRuscic W1RO
0.4572878.6 CH2OH2 (g) → CH3OH (g) ΔrH°(0 K) = -81.83 ± 0.17 kcal/molNguyen 2015a
0.3472853.1 CH3OH (g) → [CH3OH]+ (g) ΔrH°(0 K) = 10.853 ± 0.005 eVKarlsson 1977
0.3472853.2 CH3OH (g) → [CH3OH]+ (g) ΔrH°(0 K) = 10.846 ± 0.005 eVMacNeil 1977, note unc3
0.3303915.1 CH3OH (g) [CH3CHOH]+ (g) → CH3CH2OH (g) [CH2OH]+ (g) ΔrH°(0 K) = 0.848 ± 0.006 eVRuscic 1993, Ruscic 1994c
0.2893699.1 CH3CHCCH2 (g) [CH3O]- (g) → [CH3CCCH2]- (g) CH3OH (g) ΔrG°(298.15 K) = 5 ± 2 kJ/molde Visser 1999, est unc
0.2492865.5 CH3OH (cr,l) → CH3OH (g) ΔrH°(298.15 K) = 37.677 ± 0.060 kJ/molFiock 1931, Rossini 1932a
0.2492865.6 CH3OH (cr,l) → CH3OH (g) ΔrH°(298.15 K) = 37.684 ± 0.060 kJ/molSvoboda 1973
0.2317033.6 CH3N(O)O (g) H2O (g) → CH3OH (g) HN(O)O (g) ΔrH°(0 K) = 72.84 ± 2.0 kJ/molKlippenstein 2017
0.2198190.5 SiH(CH3)3 (g) [CH3O]- (g) → [Si(CH3)3]- (g) CH3OH (g) ΔrH°(0 K) = 4.26 ± 0.8 kcal/molRuscic W1RO
0.2163886.7 CH3CH2OH (g) [CH3OH]+ (g) → [CH3CH2OH]+ (g) CH3OH (g) ΔrH°(0 K) = -0.479 ± 0.036 eVRuscic W1RO, Bodi 2012
0.1962907.2 CH3OH (g) → [CH2OH]+ (g) H (g) ΔrH°(0 K) = 11.649 ± 0.003 eVRuscic 1993
0.1963993.6 CH3OCH3 (g) CH2OH (g) → CH3OCH2 (g) CH3OH (g) ΔrH°(0 K) = 0.24 ± 2.00 kJ/molKlippenstein 2017
0.1832865.4 CH3OH (cr,l) → CH3OH (g) ΔrH°(298.15 K) = 37.66 ± 0.07 kJ/molPolak 1971, note unc
0.1762859.2 CH3OH (g) + 3/2 O2 (g) → CO2 (g) + 2 H2O (cr,l) ΔrH°(298.15 K) = -182.72 ± 0.05 (×1.646) kcal/molRossini 1932a, Domalski 1972, Weltner 1951, Rossini 1934a, note old units, mw conversion
0.1702871.1 [CH3OH2]+ (g) CH3CHCH2 (g) → CH3OH (g) [CH3CHCH3]+ (g) ΔrG°(598 K) = 1.6 ± 0.6 kcal/molSzulejko 1993, 3rd Law
0.1632979.6 CH3OH (g) → HCOH (g, trans) H2 (g) ΔrH°(0 K) = 72.44 ± 0.17 kcal/molNguyen 2015a


References
1   B. Ruscic, R. E. Pinzon, M. L. Morton, G. von Laszewski, S. Bittner, S. G. Nijsure, K. A. Amin, M. Minkoff, and A. F. Wagner,
Introduction to Active Thermochemical Tables: Several "Key" Enthalpies of Formation Revisited.
J. Phys. Chem. A 108, 9979-9997 (2004) [DOI: 10.1021/jp047912y]
2   B. Ruscic, R. E. Pinzon, G. von Laszewski, D. Kodeboyina, A. Burcat, D. Leahy, D. Montoya, and A. F. Wagner,
Active Thermochemical Tables: Thermochemistry for the 21st Century.
J. Phys. Conf. Ser. 16, 561-570 (2005) [DOI: 10.1088/1742-6596/16/1/078]
3   B. Ruscic and D. H. Bross,
Active Thermochemical Tables (ATcT) values based on ver. 1.130 of the Thermochemical Network. Argonne National Laboratory, Lemont, Illinois 2023; available at ATcT.anl.gov
[DOI: 10.17038/CSE/1997229]
4   N. Genossar, P. B. Changala, B. Gans, J.-C. Loison, S. Hartweg, M.-A. Martin-Drumel, G. A. Garcia, J. F. Stanton, B. Ruscic, and J. H. Baraban
Ring-Opening Dynamics of the Cyclopropyl Radical and Cation: the Transition State Nature of the Cyclopropyl Cation
J. Am. Chem. Soc. 144, 18518-18525 (2022) [DOI: 10.1021/jacs.2c07740]
5   B. Ruscic and D. H. Bross
Active Thermochemical Tables: The Thermophysical and Thermochemical Properties of Methyl, CH3, and Methylene, CH2, Corrected for Nonrigid Rotor and Anharmonic Oscillator Effects.
Mol. Phys. e1969046 (2021) [DOI: 10.1080/00268976.2021.1969046]
6   J. H. Thorpe, J. L. Kilburn, D. Feller, P. B. Changala, D. H. Bross, B. Ruscic, and J. F. Stanton,
Elaborated Thermochemical Treatment of HF, CO, N2, and H2O: Insight into HEAT and Its Extensions
J. Chem. Phys. 155, 184109 (2021) [DOI: 10.1063/5.0069322]
7   B. Ruscic,
Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables.
Int. J. Quantum Chem. 114, 1097-1101 (2014) [DOI: 10.1002/qua.24605]
8   B. Ruscic and D. H. Bross,
Thermochemistry
Computer Aided Chem. Eng. 45, 3-114 (2019) [DOI: 10.1016/B978-0-444-64087-1.00001-2]

Formula
The aggregate state is given in parentheses following the formula, such as: g - gas-phase, cr - crystal, l - liquid, etc.

Uncertainties
The listed uncertainties correspond to estimated 95% confidence limits, as customary in thermochemistry (see, for example, Ruscic [6]).
Note that an uncertainty of ± 0.000 kJ/mol indicates that the estimated uncertainty is < ± 0.0005 kJ/mol.

Website Functionality Credits
The reorganization of the website was developed and implemented by David H. Bross (ANL).
The find function is based on the complete Species Dictionary entries for the appropriate version of the ATcT TN.
The molecule images are rendered by Indigo-depict.
The XYZ renderings are based on Jmol: an open-source Java viewer for chemical structures in 3D. http://www.jmol.org/.

Acknowledgement
This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences under Contract No. DE-AC02-06CH11357.