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Tetraethyl silicate

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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: Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
liquid127.4cal/mol*KN/Avan der Vis, Cordfunke, et al., 1992 

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
87.09298.15van der Vis, Cordfunke, et al., 1992T = 10 to 440 K. Cp/R(liq) = 2.49615x105(T/K)-2 + 70.8549x10-3 + 19.9007 (193 to 362 K), where R = 8.3144 J/mol*K.
84.15298.15Nkinamubanzi, Charlet, et al., 1985 

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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tboil439.7KN/AvanderVis, Konings, et al., 1992Uncertainty assigned by TRC = 1. K; TRC
Tboil442.KN/APCR Inc., 1990BS
Tboil441.95KN/ALecat, 1943Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Tfus191.KN/ASolana and Moles, 1932Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Deltavap12.9kcal/molSGvan der Vis and Cordfunke, 1995Based on data from 323. - 442. K.; AC
Deltavap12.5kcal/molSGvan der Vis and Cordfunke, 1995Based on data from 323. - 442. K.; AC
Deltavap11.6 ± 0.07kcal/molEBKlyuchnikov, Danilova, et al., 1985AC

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
12.0328.N/AThomas, Smith, et al., 2007Based on data from 313. - 440. K.; AC
9.78419.EBKato and Tanaka, 1989Based on data from 404. - 437. K.; AC
11.8304.N/AStull, 1947Based on data from 289. - 441. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
289. - 441.74.167411561.277-67.572Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
2.663191.Van Der Vis, Cordfunke, et al., 1992AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
16.81187.7Van der Vis, Cordfunke, et al., 1992CAL
13.94191.0

Enthalpy of phase transition

DeltaHtrs (kcal/mol) Temperature (K) Initial Phase Final Phase Reference Comment
3.1549187.72crystaline, IIcrystaline, Ivan der Vis, Cordfunke, et al., 1992DH
2.6625190.97crystaline, Iliquidvan der Vis, Cordfunke, et al., 1992DH

Entropy of phase transition

DeltaStrs (cal/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
16.81187.72crystaline, IIcrystaline, Ivan der Vis, Cordfunke, et al., 1992DH
13.94190.97crystaline, Iliquidvan der Vis, Cordfunke, et al., 1992DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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 compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
9.77PEGreen, Lappert, et al., 1971Vertical value

IR Spectrum

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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: Coblentz Society, Inc.

Condensed Phase Spectrum

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IR spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.

Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin DOW CORNING CORP.
Source reference COBLENTZ NO. 6213
Date 1964/12/07
Name(s) tetraethyl orthosilicate
State SOLUTION (5% IN CCl4 FOR 3800-1330, 2% IN CS2 FOR 1330-600, AND 5% IN CCl4 FOR 600-250 CM-1) VS. SOLVENT
Instrument PERKIN-ELMER 521 (GRATING)
Instrument parameters FILTERS AT 3150, 2500, 2000, 1150, 700, 410. GRATING CHANGES: 2000, 630 CM-1
Path length 0.011 CM, 0.011 CM, AND 0.021 CM
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS)
Boiling point 168 C

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


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

View image of digitized spectrum (can be printed in landscape orientation).

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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.
NIST MS number 9586

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), Notes

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

van der Vis, Cordfunke, et al., 1992
van der Vis, M.G.M.; Cordfunke, E.H.P.; Konings, R.J.M.; van den Berg, G.J.K.; van Miltenburg, J.C., Tetraethoxysilane, Si(OC2H5)4: heat capacity and thermodynamic properties at temperatures from 0 to 440 K, J. Chem. Thermodynam., 1992, 24, 1103-1108. [all data]

Nkinamubanzi, Charlet, et al., 1985
Nkinamubanzi, P.; Charlet, G.; Delmas, G., Excess enthalpies, excess heat capacities and excess volumes of tetraalkoxysilanes with cyclohexane and carbon tetrachloride, Fluid Phase Equilibria, 1985, 20, 57-73. [all data]

vanderVis, Konings, et al., 1992
vanderVis, M.G.M.; Konings, R.J.M.; Oskam, A.; Snoeck, T.L., The vibrational spectra of gaseous and liquid tetraethoxysilane, J. Mol. Struct., 1992, 274, 47-57. [all data]

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 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]

Solana and Moles, 1932
Solana, L.; Moles, E., Preparation and properties of ethyl orthosilicate, An. R. Soc. Esp. Fis. Quim., 1932, 30, 886-917. [all data]

van der Vis and Cordfunke, 1995
van der Vis, M.G.M.; Cordfunke, E.H.P., Tetraethoxysilane, Si(OC2H5)4: vapour pressure measurements at temperatures from 323 to 442 K by means of a Bourdon spoon gauge, Thermochimica Acta, 1995, 265, 129-134, https://doi.org/10.1016/0040-6031(95)02403-O . [all data]

Klyuchnikov, Danilova, et al., 1985
Klyuchnikov, V.A.; Danilova, T.F.; Voronkov, M.G.; D'yakov, V.M., Dokl. Phys. Chem., 1985, 281, 373. [all data]

Thomas, Smith, et al., 2007
Thomas, Leo H.; Smith, Harry; Davies, Gwyn H., Vapour pressures, molar entropies of vaporisation and liquid-state conformation of alkoxides, J. Chem. Technol. Biotechnol., 2007, 30, 1, 476-480, https://doi.org/10.1002/jctb.503300160 . [all data]

Kato and Tanaka, 1989
Kato, Masahiro; Tanaka, Hiroyuki, Ebulliometric measurement of vapor-liquid equilibria for four binary systems: methanol + silicon tetramethoxide, methanol + silicon tetraethoxide, ethanol + silicon tetramethoxide, and ethanol + silicon tetraethoxide, J. Chem. Eng. Data, 1989, 34, 2, 206-209, https://doi.org/10.1021/je00056a018 . [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Van Der Vis, Cordfunke, et al., 1992
Van Der Vis, M.G.M.; Cordfunke, E.H.P.; Konings, R.J.M.; Van Den Berg, G.J.K.; Van Miltenburg, J.C., Tetraethoxysilane, Si(OC2H5)4: heat capacity and thermodynamic properties at temperatures from 0 to 440 K, The Journal of Chemical Thermodynamics, 1992, 24, 10, 1103-1108, https://doi.org/10.1016/S0021-9614(05)80022-9 . [all data]

Van der Vis, Cordfunke, et al., 1992
Van der Vis, M.G.M.; Cordfunke, E.H.P.; Konings, R.J.M.; Van der Berg, G.J.K.; Van Miltenburg, J.C., Tetraethoxysilane, Si(OC2H5)4: heat capacity and thermodynamic properties at temperatures from 0 to 440 K, J. Chem. Thermodyn., 1992, 24, 10, 1103, https://doi.org/10.1016/S0021-9614(05)80022-9 . [all data]

Green, Lappert, et al., 1971
Green, M.C.; Lappert, M.F.; Pedley, J.B.; Schmidt, W.; Wilkins, B.T., Photoelectron spectra energy level trends in MenSiCl4-n and related series, J. Organomet. Chem., 1971, 31, 55. [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), References