Measurements and Correlations of Density, Viscosity, and Vapor Pressure for Methyl Ricinoleate

Abstract

The density and viscosity of methyl ricinoleate were measured in the temperature range from (293.16 to 383.23) K and (298.23 to 358.15) K, respectively. The vapor pressure of methyl ricinoleate was determined using a static method in the temperature range of (451.58 to 476.80) K at the pressure between (232 and 868) Pa, and methyl palmitate was employed to examine the reliability of the experimental apparatus. The experimental data were compared with the open data for methyl ricinoleate and other fatty acid methyl esters with similar molecular weight. Temperature-dependence correlation equations for the density, viscosity, and vapor pressure were proposed.

Estimation of Vapor Pressures and Enthalpies of Vaporization of Biodiesel-Related Fatty Acid Alkyl Esters. Part 2. New Parameters for Classic Vapor Pressure Correlations

“…Except for two compounds ("ME-C12:0" and "ME-C16:0"), the parameters proposed in this work showed the highest accuracy in comparison to the others. Even for these specific esters, our results were almost as accurate as the best: 0.42% 4 SMM X Rose/Supina 5 RS X Rose et al 6 RAJS X Silva et al 7 SFMK X Tang et al 8 TDHX X Rose/Schrodt 9 RV X Freitas et al 10 FOLC X Sahraoui et al 11 SAH X Duan et al 12 DU X X Yuan et al 13 YHZ X…”

“…Even though Duan et al 12 have proposed Wagner parameters for methyl ricinoleate, their application is limited to the temperature range presented in Table 3. Additionally, these authors' Wagner correlation (%AARD = 0.22%) generated less accurate results in comparison to their Antoine correlation (%AARD = 0.11%).…”

“…Given its simplicity, the Antoine equation has been extensively used over the years. Antoine parameters for fatty acid methyl esters (FAMEs) and fatty acid ethyl esters (FAEEs) have been reported in the literature. − As long as they are used for the temperature range at which the coefficients were regressed, these correlations should generate reliable estimates. Extrapolation beyond these limits may lead to absurd results and, therefore, should be avoided .…”

“…Although reliable Wagner constants are readily available for common industrial components, ,,− there is a lack of values for FAAEs. To our knowledge, there are very few works regarding this issue, ,, which may be related to the lack of accurate critical properties for these substances.…”

Density, Dynamic Viscosity, Surface Tension, Vapor Pressure, Heat Capacity, and Thermal Conductivity of Aqueous 2-(Isopropylamino)ethanol Solutions at Temperatures from (298.15 to 353.15) K

“…Correlation Equations. Temperature-and mass fraction-dependent correlation equations that describe the density, 21 dynamic viscosity, 22 surface tension, 23 vapor pressure, 24 heat capacity, 21 and thermal conductivity 25 of the prepared aqueous IPAE solutions are expressed in the following correlation equations (eqs 1−6)…”