PVT measurements of liquid ethanol in the temperature range from 310 to 363 k at pressures up to 200 MPa

Abstract

Density measurements in the compressed liquid phase for ethanol were performed with a metal-bellows variable volumometer for temperatures between 310 and 363 K at pressures from the vapor pressure to 200 MPa. The results cover the high-density region from 727 to 882 kg • m ~. The experimental uncertainties (total errors) of temper~tture, pressure, and density were estimated to be no greater than 3 mK, 0.1%, and 0.1%, respectively. Measurements of saturated liquid density at temperatures of 310. 340. and 360 K are also reported.

Thermodynamic properties of { C2H5OH+(1− )H2O} in the temperature range from 320 K to 420 K at pressures up to 200 MPa

“…Here, the densities of H 2 O were calculated from an equation of state proposed by Haar et al, (58) and those for C 2 H 5 OH were from our previous measurements. (49,50) The results are shown in figure 3. The V E m of this mixture indicates negative values in the temperature and pressure range of the present measurements and approaches zero with increasing pressure, as shown in figure 3.…”

“…We measured the bubble pressures, saturated-liquid densities, and (p, r, T ) properties for {xC 2 H 5 OH + (1−x)H 2 O} with x = (0.1002 2 0.0001), (58) whereas those for C 2 H 5 OH are from our previous measurements (48)(49)(50) except for the vapor pressure at T = 420 K which is from a correlation by Smith and Srivastava. (59) The experimental results for the density are given in tables 3 to 7.…”

“…The results of the measurements for pure ethanol were reported in our previous publications. (48)(49)(50) The present paper presents the results for …”

Thermodynamic properties of {xCH3OH +(1−x)H2O} withx= (1.0000 and 0.4993) in the temperature range from 320K to 420K at pressures up to 200MPa

“…The measurements were carried out using a metal-bellows volumometer which was previously used to obtain densities of trifluoroethanol, (9,10) aqueous trifluoroethanol mixtures, (11,12) ammonia, (13) ethanol, (14,15) and aqueous ethanol mixtures. (16) The apparatus and the experimental procedures have been described in detail elsewhere.…”

Densities for liquid ethanol in the temperature range from 310 K to 480 K at pressures up to 200 MPa

“…(14) The present paper presents the results at eight temperatures of T=310 K, T=320 K, T=380 K, T=400 K, T=420 K, T=440 K, T=460 K, and T=480 K up to 200 MPa. Measurements of saturated liquid density at temperatures from T=320 K to T=480 K are also reported.…”