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Methane, trimethoxy-

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Gas 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
Deltafgas-531.8 ± 3.2kJ/molCmHine and Klueppet, 1974Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -534.3 ± 3.2 kJ/mol
Deltafgas-531.9 ± 2.6kJ/molCcbPihlaja and Tuomi, 1971Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -537.3 ± 2.8 kJ/mol

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
Deltafliquid-568.86 ± 0.88kJ/molCmHine and Klueppet, 1974Reanalyzed by Pedley, Naylor, et al., 1986, Original value = -572.4 kJ/mol
Deltafliquid-575.3 ± 2.0kJ/molCcbPihlaja and Tuomi, 1971 
Quantity Value Units Method Reference Comment
Deltacliquid-2427.8 ± 2.0kJ/molCcbPihlaja and Tuomi, 1971Corresponding «DELTA»fliquid = -575.34 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil374.7KN/AAldrich Chemical Company Inc., 1990BS
Tboil377.2KN/AWeast and Grasselli, 1989BS
Quantity Value Units Method Reference Comment
Deltavap38.2kJ/molVHine and Klueppet, 1974ALS
Deltavap37.1kJ/molN/AHine and Klueppet, 1974DRB
Deltavap38.1 ± 0.84kJ/molCPihlaja and Tuomi, 1971ALS
Deltavap43.4kJ/molN/APihlaja and Tuomi, 1971DRB
Deltavap38.1 ± 0.8kJ/molN/APihlaja and Tuomi, 1971AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
39.288.AStephenson and Malanowski, 1987Based on data from 273. - 358. K.; AC

Reaction 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Methane, trimethoxy- + Water = Methyl formate + 2Methyl Alcohol

By formula: C4H10O3 + H2O = C2H4O2 + 2CH4O

Quantity Value Units Method Reference Comment
Deltar-9.6 ± 1.2kJ/molCmHine and Klueppet, 1974liquid phase

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/kg*bar)
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/kg*bar) d(ln(kH))/d(1/T) (K) Method Reference
69. VN/A

Gas phase ion energetics 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 evaluated as indicated in comments:
L - Sharon G. Lias

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity Value Units Method Reference Comment
IE (evaluated)9.5eVN/AN/AL

Ionization energy determinations

IE (eV) Method Reference Comment
~9.5EIHolmes and Lossing, 1982LBLHLM
9.5PEGan, Peel, et al., 1977LLK
10.24 ± 0.07PEGan, Peel, et al., 1977Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C3H7O2+10.36 ± 0.06CH3OEIMartin, Lampe, et al., 1966RDSH
C4H9O3+10.22HEIHolmes and Lossing, 1982LBLHLM
C4H9O3+10.39 ± 0.05HEIMartin, Lampe, et al., 1966RDSH

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director


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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Mass 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 134141

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Gas Chromatography

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), NIST Free Links, 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

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Column type Active phase Temperature (C) I Reference Comment
PackedApiezon L120.654.Bogoslovsky, Anvaer, et al., 1978Celite 545
PackedApiezon L160.660.Bogoslovsky, Anvaer, et al., 1978Celite 545

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryOV-101702.Zenkevich, 200525. m/0.20 mm/0.10 «mu»m, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Hine and Klueppet, 1974
Hine, J.; Klueppet, A.W., Structural effects on rates and equilibria. XVIII. Thermodynamic stability of ortho esters, J. Am. Chem. Soc., 1974, 96, 2924-2929. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Pihlaja and Tuomi, 1971
Pihlaja, K.; Tuomi, M., Bond-bond interactions in organic oxygen compounds. Part V. Enthalpies of formation of methyl and ethyl orthoformates and the contributory group increments. The magnitude of the so-called rabbit-ear effect in acyclic oxygen compounds, Acta Chem. Scand., 1971, 25, 465-469. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [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]

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]

Holmes and Lossing, 1982
Holmes, J.L.; Lossing, F.P., Towards a general scheme for estimating the heats of formation of organic ions in the gas phase. Part II. The effect of substitution at charge-bearing sites, Can. J. Chem., 1982, 60, 2365. [all data]

Gan, Peel, et al., 1977
Gan, T.H.; Peel, J.B.; Willett, G.D., A comparison of the photoelectron spectra of the trimethyl- and triallylorthoformates, Chem. Phys. Lett., 1977, 51, 464. [all data]

Martin, Lampe, et al., 1966
Martin, R.H.; Lampe, F.W.; Taft, R.W., An electron-impact study of ionization and dissociation in methoxy- and halogen- substituted methanes, J. Am. Chem. Soc., 1966, 88, 1353. [all data]

Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]

Zenkevich, 2005
Zenkevich, I.G., Experimentally measured retention indices., 2005. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, References