Silicic acid (H4SiO4), tetrapropyl ester

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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

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference
460.1298.15Nkinamubanzi, 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:
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Δvap49.8 ± 0.8kJ/molCVoronkov, Baryshok, et al., 1988AC
Δvap49.8 ± 0.4kJ/molEBKlyuchnikov, Danilova, et al., 1985AC

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference Comment
367.0.007PCR Inc., 1990BS

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
66.9322.AStephenson and Malanowski, 1987Based on data from 307. to 563. K.; AC

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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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. 5587
Date 1967/02/24
Name(s) tetrapropyl orthosilicate
State SOLUTION (10% IN CCl4 FOR 3800-1350, 2.5% IN CS2 FOR 1350-600, AND 10% IN CCl4 FOR 600-250 CM-1)
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 0.009 CM
Resolution 2
Sampling procedure TRANSMISSION
Data processing DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS)

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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Additional Data

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Due to licensing restrictions, this spectrum cannot be downloaded.

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 Japan AIST/NIMC Database- Spectrum MS-NW-8608
NIST MS number 238685

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Gas Chromatography

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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

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedApiezon L100.1170.Kreshkov, Kirichenko, et al., 1975Ar; Column length: 1. m
PackedApiezon L150.1157.Kreshkov, Kirichenko, et al., 1975Ar; Column length: 1. m
CapillaryApiezon L160.1162.3Peetre, 1974Column length: 50. m; Column diameter: 0.25 mm
PackedApiezon L160.1163.Peetre, 1974, 2Column length: 3. m

Kovats' RI, non-polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryApiezon L1160.Peetre, 1974Column length: 50. m; Column diameter: 0.25 mm; Program: not specified

Normal alkane RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedApieson M160.1163.Ellren, Peetre, et al., 1974Chromosorb G AW DMCS (80-100 mesh)

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.

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]

Voronkov, Baryshok, et al., 1988
Voronkov, M.G.; Baryshok, V.P.; Klyuchnikov, V.A.; Danilova, T.F.; Pepekin, V.I.; Korchagina, A.N.; Khudobin, Yu.I., Thermochemistry of organosilicon compounds, Journal of Organometallic Chemistry, 1988, 345, 1-2, 27-38, https://doi.org/10.1016/0022-328X(88)80231-6 . [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]

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

Kreshkov, Kirichenko, et al., 1975
Kreshkov, A.P.; Kirichenko, É.A.; Markov, B.A., Retention indices of alkoxychlorosilanes, Zh. Anal. Khim., 1975, 30, 2, 286-289. [all data]

Peetre, 1974
Peetre, I.-B., Gas chromatographic investigation of organometallic compounds and their carbon analogues. II. Improved method for calculating retention indices of tetraalkoxysilanes, J. Chromatogr., 1974, 88, 2, 311-321, https://doi.org/10.1016/S0021-9673(00)83155-6 . [all data]

Peetre, 1974, 2
Peetre, I.-B., Gas chromatographic investigation of organometallic compounds and their carbon analogues. III. A study of Kováts retention indices for tetraalkoxysilanes containing branched alkoxy groups, J. Chromatogr., 1974, 90, 1, 35-40, https://doi.org/10.1016/S0021-9673(01)94771-5 . [all data]

Ellren, Peetre, et al., 1974
Ellren, O.; Peetre, I.B.; Smith, B.E.F., Gas chromatographic investigation of organometallic compounds and their carbon analogues. V. Use of refractive index in conjunction with Kovats retention index for the identification of organosilicon compounds, J. Chromatogr., 1974, 93, 2, 383-392, https://doi.org/10.1016/S0021-9673(01)85402-9 . [all data]


Notes

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