Volumetric Properties of 1-Phenyldecane and 1-Phenylundecane at Pressures to 65 MPa and Temperature between 293.15 and 353.15 K

Abstract

Density data (196 points) for 1-phenyldecane (decylbenzene) and for 1-phenylundecane (undecylbenzene) at several temperatures between (293.15 and 353.15) K and pressures up to 65 MPa are reported. A vibrating tube densimeter with an uncertainty of (5 × 10 -4 g‚cm -3 was used to perform these measurements. The experimental density data were fitted with the Tait-like equation with standard deviations e1.5 × 10 -4 g‚cm -3 . The isobaric thermal expansivity, R p , and the isothermal compressibility, κ T , have been evaluated, calculating these derivative density properties using the Tait-like equation.

Liquid density of 1-pentanol at pressures up to 140MPa and from 293.15 to 403.15K

“…around 0.05% for density close to water density). This uncertainty is similar to that reported in several studies: Watson et al [14], Comuñas et al [15], Zéberg-Mikkkelsen et al [19], Milhet et al [20], Miyake et al [21]. However, for measurements at atmospheric pressure at T = 373.15, 383.15, 393.15 and 403.15 K we used decane as reference fluid.…”

“…In order to correlate our values over the entire temperature and pressure ranges, the following Tait-like equation has been used as in previous works (Zéberg-Mikkkelsen et al [19], Milhet et al [20], Miyake et al [21,24], Comuñas et al [25,26])]. …”

High-pressure (up to 140MPa) density and derivative properties of some (pentyl-, hexyl-, and heptyl-) amines between (293.15 and 353.15)K

“…Consequently in order to get a better estimation of some derivatives properties (see paragraph below) we made the fit of density with equation (2), as the derivatives properties are more sensitive to the FIGURE 2. Deviation between the density from data literature [11][12][13][14][15][16][17] and the density results of this work at atmospheric pressure (+: heptylamine, d: hexylamine, j: pentylamine, ------: deviation = ±0.125%). expression of the atmospheric pressure density versus temperature.…”

“…In order to correlate our values over the entire temperature and pressure ranges, the following Tait-like equation has been used as in previous works [14][15][16][17][18][19] …”

“…15) K. Figure 1 shows their molecular conformation. Concerning these compounds, to our knowledge, the previous measurements have only been made at atmospheric pressure [4][5][6][7][8][9][10].…”