Speed of Sound and Density of 1-Chloropropane in the Range of Temperatures 180–373 K and Pressures up to 196.1 MPa

Abstract

For liquid 1-chloropropane, we report the data of measurement of the density and the speed of sound within the range of temperatures 183.15−373.15 K at atmospheric pressure (up to 313 K) and the saturation conditions for 323.15−373.15 K, the isobaric heat capacity within the range 173.15−298.15 K, and density and the speed of sound under high pressure for the temperatures 294.15−373.15 K evaluated using acoustic piezometer and the pulse-phase echo method for the measurement of the speed of sound. It is shown that that volumetric data under high pressure can be successfully predicted using the fluctuation theory-based Tait-like equation of state, which required a knowledge of data measured at the atmospheric pressure only. The corresponding temperature dependences of parameters are provided.

Thermophysical Properties of the Medium-Chain 1-Alkyl Halides in a Wide Range of Conditions: New Experimental Data and Predictions of CP-PC-SAFT and FT-EOS

“…This time we report experimental and interpolated data on thermophysical properties of 1-chloroheptane and 1-iodoheptane at 216.08 ≤ T ≤ 423.1 K and 0.1 ≤ P ≤ 196.1 MPa. The current analysis covers also the previously published results for 1-iodohexane, 1-chlorohexane, and 1-chloropropane in similar P – T ranges, along with the volumetric properties of 1-alkyl bromides , and the eminent data − of Percy Williams Bridgman at very high pressures. Unfortunately, no elevated pressure data are available in open sources for the medium-chain 1-alkyl fluorides.…”

“…Both models examined in the current study have been previously − described in great detail. The FT-EOS is a simple approach utilizing the saturation liquid phase data for predicting the pure compound properties at high pressures up to ∼5000 bar and below normal boiling points. It is based on the inverse reduced density fluctuations parameter, expressed via the temperature-dependent saturated ρ and κ T .…”

“…While in the first database the T c and P c of 1-alkyl halides are determined by the Marrero-Morejón and Pardillo-Fontdevila correlation, in the second one the relevant methods are not disclosed. Table displays the absolute average deviations (AAD%) of FT-EOS and CP-PC-SAFT in predicting sound velocities and densities of the 1-alkyl halides reported in this and preceding − studies at similar conditions up to ∼2000 bar. For the latter model the results obtained with the T c and P c from both DIPPR and Yaws databases are compared.…”

“…Since the considered pressure range up to ∼2000 bar is not wide enough for a clear observation of these differences, let us consider the data of Jenner and Millet , and Bridgman − reported at much higher pressures. Unfortunately, these pressures are beyond the applicability range of FT-EOS (see also Figure S2).…”

“…Compressibilities of 1-alkyl halides and n -alkanes. Points, experimental data. ,− ,− Solid lines, predictions of CP-PC-SAFT.…”