---
_id: '65922'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title>\r\n                  <jats:p>A fundamental
    equation of state for tetramethoxysilane (TMOS) is developed based on the available
    experimental data. In addition, new density and speed of sound measurements were
    performed specifically for this work to improve the database. Owing to the limited
    overall data set, additional thermodynamic properties were analyzed to support
    the fitting procedure and ensure physically consistent behavior. Modified representations
    of thermodynamic properties that are typically employed in the fitting procedure
    were introduced to facilitate the application of constraints. The resulting model
    provides a consistent description of the thermodynamic properties of TMOS.</jats:p>"
article_number: '117'
article_type: original
author:
- first_name: F.
  full_name: Fiedler, F.
  last_name: Fiedler
- first_name: Elmar
  full_name: Baumhögger, Elmar
  id: '15164'
  last_name: Baumhögger
- first_name: Simon
  full_name: Kruse, Simon
  id: '65653'
  last_name: Kruse
- first_name: E. W.
  full_name: Lemmon, E. W.
  last_name: Lemmon
- first_name: Tina
  full_name: Kasper, Tina
  id: '94562'
  last_name: Kasper
  orcid: '0000-0003-3993-5316 '
- first_name: M.
  full_name: Thol, M.
  last_name: Thol
citation:
  ama: Fiedler F, Baumhögger E, Kruse S, Lemmon EW, Kasper T, Thol M. Thermodynamic
    Properties of Tetramethoxysilane. <i>International Journal of Thermophysics</i>.
    2026;47(7). doi:<a href="https://doi.org/10.1007/s10765-026-03770-2">10.1007/s10765-026-03770-2</a>
  apa: Fiedler, F., Baumhögger, E., Kruse, S., Lemmon, E. W., Kasper, T., &#38; Thol,
    M. (2026). Thermodynamic Properties of Tetramethoxysilane. <i>International Journal
    of Thermophysics</i>, <i>47</i>(7), Article 117. <a href="https://doi.org/10.1007/s10765-026-03770-2">https://doi.org/10.1007/s10765-026-03770-2</a>
  bibtex: '@article{Fiedler_Baumhögger_Kruse_Lemmon_Kasper_Thol_2026, title={Thermodynamic
    Properties of Tetramethoxysilane}, volume={47}, DOI={<a href="https://doi.org/10.1007/s10765-026-03770-2">10.1007/s10765-026-03770-2</a>},
    number={7117}, journal={International Journal of Thermophysics}, publisher={Springer
    Science and Business Media LLC}, author={Fiedler, F. and Baumhögger, Elmar and
    Kruse, Simon and Lemmon, E. W. and Kasper, Tina and Thol, M.}, year={2026} }'
  chicago: Fiedler, F., Elmar Baumhögger, Simon Kruse, E. W. Lemmon, Tina Kasper,
    and M. Thol. “Thermodynamic Properties of Tetramethoxysilane.” <i>International
    Journal of Thermophysics</i> 47, no. 7 (2026). <a href="https://doi.org/10.1007/s10765-026-03770-2">https://doi.org/10.1007/s10765-026-03770-2</a>.
  ieee: 'F. Fiedler, E. Baumhögger, S. Kruse, E. W. Lemmon, T. Kasper, and M. Thol,
    “Thermodynamic Properties of Tetramethoxysilane,” <i>International Journal of
    Thermophysics</i>, vol. 47, no. 7, Art. no. 117, 2026, doi: <a href="https://doi.org/10.1007/s10765-026-03770-2">10.1007/s10765-026-03770-2</a>.'
  mla: Fiedler, F., et al. “Thermodynamic Properties of Tetramethoxysilane.” <i>International
    Journal of Thermophysics</i>, vol. 47, no. 7, 117, Springer Science and Business
    Media LLC, 2026, doi:<a href="https://doi.org/10.1007/s10765-026-03770-2">10.1007/s10765-026-03770-2</a>.
  short: F. Fiedler, E. Baumhögger, S. Kruse, E.W. Lemmon, T. Kasper, M. Thol, International
    Journal of Thermophysics 47 (2026).
date_created: 2026-06-17T14:35:12Z
date_updated: 2026-06-18T12:44:51Z
department:
- _id: '728'
doi: 10.1007/s10765-026-03770-2
intvolume: '        47'
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: International Journal of Thermophysics
publication_identifier:
  issn:
  - 0195-928X
  - 1572-9567
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Thermodynamic Properties of Tetramethoxysilane
type: journal_article
user_id: '15164'
volume: 47
year: '2026'
...
---
_id: '29168'
abstract:
- lang: eng
  text: <jats:title>Abstract</jats:title><jats:p>The homogeneous density of the liquid
    phase is experimentally investigated for methyl diethanolamine. Data are obtained
    along five isotherms in a temperature range between 300 K and 360 K for pressures
    up to 95 MPa. Two different apparatuses are used to measure the speed of sound
    for the temperatures between 322 K and 450 K with a maximum pressure of 95 MPa.
    These measurements and literature data are used to develop a fundamental equation
    of state for methyl diethanolamine. The model is formulated in terms of the Helmholtz
    energy and allows for the calculation of all thermodynamic properties in gaseous,
    liquid, supercritical, and saturation states. The experimental data are represented
    within their uncertainties. The physical and extrapolation behavior is validated
    qualitatively to ensure reasonable calculations outside of the range of validity.
    Based on the experimental datasets, the equation of state is valid for temperatures
    from 250 K to 750 K and pressures up to 100 MPa.</jats:p>
article_number: '10'
author:
- first_name: Tobias
  full_name: Neumann, Tobias
  last_name: Neumann
- first_name: Elmar
  full_name: Baumhögger, Elmar
  id: '15164'
  last_name: Baumhögger
- first_name: Roland
  full_name: Span, Roland
  last_name: Span
- first_name: Jadran
  full_name: Vrabec, Jadran
  last_name: Vrabec
- first_name: Monika
  full_name: Thol, Monika
  last_name: Thol
citation:
  ama: Neumann T, Baumhögger E, Span R, Vrabec J, Thol M. Thermodynamic Properties
    of Methyl Diethanolamine. <i>International Journal of Thermophysics</i>. 2021;43(1).
    doi:<a href="https://doi.org/10.1007/s10765-021-02933-7">10.1007/s10765-021-02933-7</a>
  apa: Neumann, T., Baumhögger, E., Span, R., Vrabec, J., &#38; Thol, M. (2021). Thermodynamic
    Properties of Methyl Diethanolamine. <i>International Journal of Thermophysics</i>,
    <i>43</i>(1), Article 10. <a href="https://doi.org/10.1007/s10765-021-02933-7">https://doi.org/10.1007/s10765-021-02933-7</a>
  bibtex: '@article{Neumann_Baumhögger_Span_Vrabec_Thol_2021, title={Thermodynamic
    Properties of Methyl Diethanolamine}, volume={43}, DOI={<a href="https://doi.org/10.1007/s10765-021-02933-7">10.1007/s10765-021-02933-7</a>},
    number={110}, journal={International Journal of Thermophysics}, publisher={Springer
    Science and Business Media LLC}, author={Neumann, Tobias and Baumhögger, Elmar
    and Span, Roland and Vrabec, Jadran and Thol, Monika}, year={2021} }'
  chicago: Neumann, Tobias, Elmar Baumhögger, Roland Span, Jadran Vrabec, and Monika
    Thol. “Thermodynamic Properties of Methyl Diethanolamine.” <i>International Journal
    of Thermophysics</i> 43, no. 1 (2021). <a href="https://doi.org/10.1007/s10765-021-02933-7">https://doi.org/10.1007/s10765-021-02933-7</a>.
  ieee: 'T. Neumann, E. Baumhögger, R. Span, J. Vrabec, and M. Thol, “Thermodynamic
    Properties of Methyl Diethanolamine,” <i>International Journal of Thermophysics</i>,
    vol. 43, no. 1, Art. no. 10, 2021, doi: <a href="https://doi.org/10.1007/s10765-021-02933-7">10.1007/s10765-021-02933-7</a>.'
  mla: Neumann, Tobias, et al. “Thermodynamic Properties of Methyl Diethanolamine.”
    <i>International Journal of Thermophysics</i>, vol. 43, no. 1, 10, Springer Science
    and Business Media LLC, 2021, doi:<a href="https://doi.org/10.1007/s10765-021-02933-7">10.1007/s10765-021-02933-7</a>.
  short: T. Neumann, E. Baumhögger, R. Span, J. Vrabec, M. Thol, International Journal
    of Thermophysics 43 (2021).
date_created: 2022-01-06T09:44:07Z
date_updated: 2022-01-06T09:45:32Z
department:
- _id: '155'
doi: 10.1007/s10765-021-02933-7
intvolume: '        43'
issue: '1'
keyword:
- Condensed Matter Physics
language:
- iso: eng
publication: International Journal of Thermophysics
publication_identifier:
  issn:
  - 0195-928X
  - 1572-9567
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Thermodynamic Properties of Methyl Diethanolamine
type: journal_article
user_id: '15164'
volume: 43
year: '2021'
...