| Autor: |
Bolotnikov, M. F., Verveyko, V. N., Verveyko, M. V. |
| Zdroj: |
Journal of Chemical and Engineering Data; May 2004, Vol. 49 Issue: 3 p631-634, 4p |
| Abstrakt: |
Experimental speeds of sound and densities are presented for the liquid phase of poly(propylene glycol)-425. The measurements were carried out along nine isotherms from (293.15 to 373.15) K at pressures from saturation condition up to 100 MPa. The speed of sound was measured by a pulse-phase echo ultrasonic device at a frequency of 1 to 5 MHz with an uncertainty of ±0.2%. The density was measured by an acoustic piezometer constructed by the authors with an uncertainty of ±0.3%. The experimental results were used to calculate isobaric thermal expansion coefficient αp and isentropic compressibility kS. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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