Abstract
New high-precision measurements of the viscosity η of gaseous ethane from near room temperature up to 630 K and at densities between 0.3 and 1.6 kg-m −3 and between 0.01 and 0.05 mol · L −1 respectively, carried out in an all-quartz oscillating-disk viscometer with small gaps are reported. The data for the viscosity of ethane at 0.1013 MPa are in good agreement with other high-precision experimental data from literature near room temperature. Additionally, the new experimental data were used to create an individual correlation of the zero-density viscosity coefficient. Only positive values with a maximum in the middle of the temperature range were found for the second viscosity virial coefficient B η. These results corroborate the Rainwater-Friend (1984) theory and the recent investigation by Bich and Vogel (1991).
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