Volumetric measurements of liquid pentan-2-one, hexan-2-one, and 4-methylpentan-2-one at temperatures from 278.15 K to 338.13 K and pressures in the range from 0.1 MPa to 386 MPa

Liquid Density Measurements of Diethylene Glycol Monoalkyl Ethers as a Function of Temperature and Pressure

“…This means that the insertion of a methylene group (nonpolar) reduces the internal pressure. This fact has also been observed previously for dialkyl carbonates, 2-alkanones 11,12 (from 2-butanone to 2-hexanone), and ethyl alkanoates. − …”

“…The function B(T) decreases when the temperature rises and decreases with the increase of the CH 2 groups. The temperature dependence of B(T) and its diminution when the number of CH 2 groups increases in the diethylene glycol monoalkyl ether molecule have also been found by other authors for other polar compounds such as polyalkylene glycol dimethyl ethers, 4 organic carbonates, 9 2-alkanones, [10][11][12] and alkyl alkanoates. 13 The comparison of our experimental values at atmospheric pressure at several temperatures with the literature data reported by several authors [14][15][16][17][18][19][20][21][22] gives an average absolute deviation (AAD) of 0.08% for DEGME and of 0.06% for DEGEE.…”

“…The function B ( T ) decreases when the temperature rises and decreases with the increase of the CH 2 groups. The temperature dependence of B ( T ) and its diminution when the number of CH 2 groups increases in the diethylene glycol monoalkyl ether molecule have also been found by other authors for other polar compounds such as polyalkylene glycol dimethyl ethers, organic carbonates, 2-alkanones, − and alkyl alkanoates 1 Experimental densities for (a) DEGME and (b) DEGEE versus pressure at different temperatures: ◇, experimental points (283.15, 293.15, 303.15, 313.15, 323.15, 333.15, 343.15, and 353.15) K;, eq 1 with the parameters of Table . 2DEGMEDEGEE A 0 /g·cm -3 1.54303 1.54496 − A 1 × 10 3 /g·cm -3 ·K -1 3.4848 3.6943 A 2 × 10 6 /g·cm -3 ·K -2 8.52 8.88 − A 3 × 10 9 /g·cm -3 ·K -3 9.3 9.4 s × 10 4 /g·cm -3 1 0.9 B 0 /MPa 672.7061 582.5406 − B 1 /MPa·K -1 2.6997 2.2909 B 2 × 10 3 /MPa·K -2 3.033 2.511 C 0.080864 0.079588 s * × 10 4 /g·cm -3 1 1 …”

The group contribution method (GC) versus the critical point-based approach (CP): Predicting thermodynamic properties of weakly- and non-associated oxygenated compounds by GC-PPC-SAFT and CP-PC-SAFT

“…Atoyan and Mamedov [72] and Atoyan [73][74][75][76][77] have published densities and sound velocities of several ketones. Malhotra et al [78] and Malhotra and Woolf [79] have reported the densities and some derived thermodynamic properties of 3-Pentanone and 4-Heptanone covering the higher pressures but narrower temperature range in comparison to references [72] and [74]. It should be pointed out that these data sources are in good mutual agreement.…”

“…Experimental data -points[72][73][74][75][76][77][78][79]. Predictions: solid lines Sound velocities in ketones.…”