Cited by 976Thermodynamic properties of mixturesScientific Measurement and Uncertainty EvaluationDiffusion Coefficients in Liquids

Viscosity of liquid water in the range −8 °C to 150 °C

Kestin, Joseph, Sokolov, Mordechai, Wakeham, William A.·1978·Journal of Physical and Chemical Reference Data

Abstract

The paper re-analyzes the results of earlier, very precise measurements of the viscosity of water at essentially atmospheric pressure. This is done in terms of a new, theoretically-based equation for the operation of a capillary viscometer rather than in terms of semi-empirical equations used by the original authors. The new analysis eliminates possible systematic errors and permits the establishment of realistic error bounds for water in its role as a standard reference substance for viscosity. The latter are smaller than those embodied in the most recent International Formulation. Standard values of the ratio of viscosity at a temperature T to its value at 20 °C have been derived from the re-analyzed data because the uncertainty of this ratio is an order of magnitude smaller than that of the absolute values. The ratios are used to generate absolute values with the aid of the standard NBS datum μ=1002.0 μPa s at 20 °C. The viscosity ratios have been correlated with the aid of two empirical equations. The more accurate equation covers the range 0 °C?t ?40 °C with an uncertainty of ±0.05%. The less accurate equation covers the wider range −8 °C?t?150 °C with the more limited accuracy of ±0.2%. The two empirical equations are compatible with each other to 0.09%.

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Crossref · 10.1063/1.555581

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Authors
Kestin, J., Sokolov, M., & Wakeham, W. A.
Affiliations
Brown University (US)
Venue
Journal of Physical and Chemical Reference Data
Published
1978-07-01
Volume
7
Issue
3
Pages
941-948
ISSN
  • 0047-2689 (ISSN-L)
  • 1529-7845
OpenAlex
W2123158014
Cited by
976
References
0
Citations by year
2026: 72 · 2025: 88 · 2024: 74 · 2023: 54 · 2022: 64 · 2021: 48 · 2020: 56 · 2019: 59 · 2018: 62 · 2017: 57 · 2016: 63 · 2015: 67 · 2014: 65 · 2013: 62 · 2012: 19
FWCI
6.69
Type
journal article
Language
en
Open access
closed
Locations
Journal of Physical and Chemical Reference Data (publishedVersion)
Topics
  • Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Thermodynamic properties of mixtures
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Scientific Measurement and Uncertainty Evaluation
  • Physical Sciences › Chemistry › Spectroscopy › Diffusion Coefficients in Liquids
Keywords
liquid water, viscosity, capillary viscometer, viscosity ratio, reference materials, empirical viscosity correlations, temperature-dependent viscosity

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