Prediction of miscible mixtures flash-point from UNIFAC group contribution methods

Relationship between flash points of some binary base oils and their constituent oils

“…Moreover, the flash point behaviors for miscible mixtures and immiscible mixtures are quite different. The mixtures displayed in Figures 1 to 3 seemed to be miscible mixtures, the ones displayed in Figures 4 and 5 seemed to be partially miscible mixtures, and the ones displayed in Figure 6 seemed to be almost completely immiscible mixture [33][34][35][36][37][38][39]. …”

Group Contribution Methods for Estimation of Selected Physico-Chemical Properties of Organic Compounds

“…Chickos et al, 1995;Chickos & Wilson, 1997;Marrero & Gani, 2001;Kolská et al 2005, etc. ), entropy of vaporization (Chiskos et al, 1998;Kolská et al 2005), normal boiling temperature (Joback & Reid, 1987;Gani & Constantinou, 1996;Marrero & Gani, 2001), liquid thermal conductivity (Nagvekar & Daubert, 1987), gas thermal conductivity (Chung et al, 1984), gas permeability and diffusion coefficients (Yampolskii et al, 1998), liquid density (Campbell & Thodos, 1985;Sales-Cruz et al, 2010;Shahbaz et al, 2012), surface tension (Brock, 1955;Conte et al, 2008;Awasthi et al, 2010), solubility parameters of fatty acid methyl esters (Lu et al, 2011), flash temperatures (Liaw & Chiu, 2006;Liaw et al, 2011). Large surveys of group contribution methods for enthalpy of vaporization and liquid heat capacity have been presented in references (Zábranský et al, 2003;Kolská, 2004;Kolská et al, 2005;Kolská et.…”

“…The flash temperature is defined as the lowest temperature at which vapour above liquid forms flammable mixture with air at a pressure 101 325 Pa. Usual approach for flash temperature estimation is linear relationship between flash temperature Tf and normal boiling temperature Tb (Dvořák, 1993). Some models for flash temperature were presented earlier (Liaw & Chiu, 2006;Liaw et al, 2011).…”

The Measurement of Flash Point of Water-Methanol and Water-Ethanol Systems Using Seta Flash Closed Cup Tester

“…United Nations (UN) recommended the worldwide implementation of Globally Harmonized System of Classification and Labeling of Chemicals (GHS) in 2008 and the flash point of liquid mixtures is the crucial reference property in the classification of flammable liquids within it (5) . Unfortunately experimental flash point data of liquid mixtures are scarce.…”

“…Deriving the flash point data using closed cup tester is a time-consuming work and the cost of obtaining the flash point data is vary high (5) . Therefore various alternative methods to predict the flash point of liquid mixture have been proposed.…”