International Standard for viscosity at temperatures up to 473 K and pressures below 200 MPa (IUPAC Technical Report)
Josefa Fernandez, Marc J. Assael, Robert M. Enick, and J.P. Martin Trusler
Pure and Applied Chemistry, 2019
Volume 91, Issue 1, pp. 161-172
This paper presents the results of an investigation into possible liquid viscosity standards to meet an industrial requirement for a liquid with a nominal viscosity of 20 mPa s at a temperature of 473 K and pressure of 200 MPa with a relative expanded uncertainty of less than 5 %. There are no commercially available certified viscosity reference liquids that meet this requirement. Four candidate fluids were examined: squalane, Krytox GPL102, tris(2-ethylhexyl) trimellitate (TOTM), and dipentaerythritol hexa(3,5,5-trimethylhexanoate) (DiPEiC9). Although none of these fluids satisfies all of the criteria, two fluids were identified as being suitable as International Standards for viscosity at temperatures up to 473 K and pressures below 200 MPa. These fluids are squalane and tris(2-ethylhexyl) trimellitate (TOTM), which at T = 473.15 K and p = 200 MPa present viscosity values of 5 mPa s and 10 mPa s, respectively.
©2019 IUPAC & De Gruyter. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. For more information, please visit: http://creativecommons.org/licenses/by-nc-nd/4.0/
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- Masthead - Full issue pdf
- Paris 2019
- Back to France to Celebrate the Century-Old IUPAC: The 47th IUPAC World Chemistry Congress & 50th General Assembly
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- The Stockholm Convention: A Tool for the Global Regulation of Persistent Organic Pollutants
- Ten Chemical Innovations That Will Change Our World: IUPAC identifies emerging technologies in Chemistry with potential to make our planet more sustainable
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- Henry Moseley and the Search for Element 72
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- Awardees of the IUPAC 2019 Distinguished Women In Chemistry or Chemical Engineering
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- Definition of the Chalcogen Bond
- Project Place
- Building Broader and Deeper Links Between OPCW and IUPAC
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- International Standard for viscosity at temperatures up to 473 K and pressures below 200 MPa (IUPAC Technical Report)
- IUPAC Distinguished Women in Chemistry: Contributions to Science and Careers
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- Conference Call
- Bringing IUPAC to Southern Africa
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