Compressions of 4-methyl-1,3-dioxolan-2-one and of some alkanols at pressures up to 200 MPa and at the temperature 298.15 K

Liquid density of oxygenated additives to biofuels: 2-Butanol at pressures up to 140MPa and temperatures from (293.15 to 393.27)K

“…The data at high pressure are scarce (only five papers [4][5][6][7][8]), and correspond mostly to articles published before 1992, only two of them being recent [7,8] At high pressure, the references [4][5][6] were presented by Cibulka et al [19] and the comparison of their results to ours has been already discussed in paragraph 3.1. The comparison with Zuñiga-Moreno et al [7], which presents the greatest set of data in our p, T range (N P = 150), shows a very good agreement with our correlation with D AAD of 0.05%, that is lower than the experimental uncertainty.…”

“…The same occurs with respect to data from Outcalt et al [8] (N P = 86), which presents D AAD of 0.06%, that is also lower than the experimental uncertainty. Figure 5 presents the percentage deviations between the present density data of 2-butanol and the literature data at high pressure [4][5][6][7][8].…”

“…For 2-butanol, the proposed correlation is valid in the temperature interval (283.15 to 348.15) K and for pressures between (1 and 206.5) MPa. This review covers three papers published before 1992 [4][5][6]. There are no data at high pressure for temperature above 348.15 K. Moreover, above T = 298.15 K only the data from [5] correspond to high pressures up to 206.5 MPa, and up to T = 348.15 K. Notice that the density values used in the fitting procedure were calculated form other properties and are not direct …”

“…Similarly the isobaric thermal expansivity could also be obtained analytically by differentiating equation (6) taking into account the temperature dependence of q 0 (T) and B(T). But as Cerdeiriña et al…”

“…Notice that in the recent studies [7,8] the declared uncertainty is around 0.025% and 0.001% but with narrow pressure interval (up to 25 and 50 MPa). There are only 3 old references [4][5][6] with maximum pressure above 206.5 MPa but with temperature below 348.15 K. Moreover, the results of 2-butanol density have not measured directly from experimental data but it was calculated from other properties; specific volume [4,5] compression [6] and therefore the deviations obtained do not reflect the accuracy of experimental data of 2-butanol density.…”