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A new pressure medium, Daphne 7676, with solidification pressure of 5 GPa at 300 K and low melting point of around 110 K at ambient pressure.

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Title: A new pressure medium, Daphne 7676, with solidification pressure of 5 GPa at 300 K and low melting point of around 110 K at ambient pressure.
Authors: Murata, K.1 (AUTHOR) murata.keizo@gmail.com, Goto, K.2 (AUTHOR), Klotz, S.3 (AUTHOR), Bhoi, D.4,5 (AUTHOR), Béneut, K.6 (AUTHOR), Uwatoko, Y.4,7 (AUTHOR), Yoshino, H.1 (AUTHOR), Aoki, S.2 (AUTHOR)
Source: High Pressure Research. Jun2025, Vol. 45 Issue 2, p151-161. 11p.
Subjects: Melting points, Critical temperature, Glass transitions, Solidification, Shear strength
Abstract: A recently developed pressure medium 'Daphne 7676' increases considerably the solidification pressure (Ps) at room temperature from 3.7 GPa (Daphne 7474) and 4.0 GPa (Daphne 7575) to 5 GPa. Moreover, Daphne 7676 is found to show a viscosity more than one order of magnitude lower than the preceding materials. Even after solidified above 5 GPa, the medium appears to have exceptionally low shear strength, with evidence of some relaxations over time-scales of hours. Furthermore, at ambient pressure, Daphne 7676 is found to show freezing/melting temperature (Tm) of 113 K and a glass transition (Tg) at approximately 110 K. These values are considerably lower than for Daphne 7474, with Tm = 150 K and Tg = 140 K. Considering that 113 K is close to the critical temperature Tc (110 K) of Bi-high-Tc superconductors, for example, this fluid may have widespread applications in high pressure research but potentially also in bio and life-sciences. [ABSTRACT FROM AUTHOR]
Copyright of High Pressure Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A new pressure medium, Daphne 7676, with solidification pressure of 5 GPa at 300 K and low melting point of around 110 K at ambient pressure.
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  Data: <searchLink fieldCode="AR" term="%22Murata%2C+K%2E%22">Murata, K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> murata.keizo@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Goto%2C+K%2E%22">Goto, K.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Klotz%2C+S%2E%22">Klotz, S.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bhoi%2C+D%2E%22">Bhoi, D.</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Béneut%2C+K%2E%22">Béneut, K.</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Uwatoko%2C+Y%2E%22">Uwatoko, Y.</searchLink><relatesTo>4,7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yoshino%2C+H%2E%22">Yoshino, H.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aoki%2C+S%2E%22">Aoki, S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22High+Pressure+Research%22">High Pressure Research</searchLink>. Jun2025, Vol. 45 Issue 2, p151-161. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Melting+points%22">Melting points</searchLink><br /><searchLink fieldCode="DE" term="%22Critical+temperature%22">Critical temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Glass+transitions%22">Glass transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Solidification%22">Solidification</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+strength%22">Shear strength</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A recently developed pressure medium 'Daphne 7676' increases considerably the solidification pressure (Ps) at room temperature from 3.7 GPa (Daphne 7474) and 4.0 GPa (Daphne 7575) to 5 GPa. Moreover, Daphne 7676 is found to show a viscosity more than one order of magnitude lower than the preceding materials. Even after solidified above 5 GPa, the medium appears to have exceptionally low shear strength, with evidence of some relaxations over time-scales of hours. Furthermore, at ambient pressure, Daphne 7676 is found to show freezing/melting temperature (Tm) of 113 K and a glass transition (Tg) at approximately 110 K. These values are considerably lower than for Daphne 7474, with Tm = 150 K and Tg = 140 K. Considering that 113 K is close to the critical temperature Tc (110 K) of Bi-high-Tc superconductors, for example, this fluid may have widespread applications in high pressure research but potentially also in bio and life-sciences. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of High Pressure Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/08957959.2025.2506417
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 151
    Subjects:
      – SubjectFull: Melting points
        Type: general
      – SubjectFull: Critical temperature
        Type: general
      – SubjectFull: Glass transitions
        Type: general
      – SubjectFull: Solidification
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      – SubjectFull: Shear strength
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      – TitleFull: A new pressure medium, Daphne 7676, with solidification pressure of 5 GPa at 300 K and low melting point of around 110 K at ambient pressure.
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            NameFull: Murata, K.
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              M: 06
              Text: Jun2025
              Type: published
              Y: 2025
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