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
Δvap12.9kcal/molSGvan der Vis and Cordfunke, 1995Based on data from 323. to 442. K.; AC
Δvap12.5kcal/molSGvan der Vis and Cordfunke, 1995Based on data from 323. to 442. K.; AC
Δvap11.6 ± 0.07kcal/molEBKlyuchnikov, Danilova, et al., 1985AC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
12.0328.N/AThomas, Smith, et al., 2007Based on data from 313. to 440. K.; AC
9.78419.EBKato and Tanaka, 1989Based on data from 404. to 437. K.; AC
11.8304.N/AStull, 1947Based on data from 289. to 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. to 441.74.167411561.277-67.572Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of fusion

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

Entropy of fusion

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

Enthalpy of phase transition

ΔHtrs (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

ΔStrs (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:


References

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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]


Notes

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