490. Determination of the solubility of water in some organic liquids by means of tritium

Abstract

Tritiated water and liquid scintillation counting have been used to obtain the saturation solubilities of water in some aromatic hydrocarbons and halides a t 25O, 30°, and 35". The results are analysed in terms of Hildebrand's concepts of solubility parameters and various expressions for calculating entropies of mixing.

Interfacial Tension of Chlorinated Aliphatic DNAPL Mixtures as a Function of Organic Phase Composition

“…The larger inaccuracies for IFT predictions for mixtures containing 1,2-DCE isomers may possibly be explained by one or both of two factors: uncertain model parameters for the 1,2-DCE isomers and/or potential nonideal interactions between one or both of the 1,2-DCE isomers and the other CAH compounds in the mixture. The X oW values for cis - and trans -1,2-DCE, required to use the AS and FU methods, were estimated ( , ). Consequently, the predicted IFT values are uncertain.…”

“…Only one reported value each for PCE, TCE, and PCM was located in the literature. No values could be located for cis -DCE or trans -DCE, so these parameters are estimated using methods from the literature ( , ). The values were used with the linear mixing rules to obtain values required for the IFT models.…”

Estimation of interfacial tension between organic liquids and water

“…In the absence of the necessary values of f, such as in the case with the primary amines, the solubilities for Kow were not available, these were estimated using the method of Hansch and Leo (29) using compound structural information. For the estimation of Sw<0), the method of Jones and Monk (30) was used. This method requires V and solubility parameters, .…”

Investigation of Water Interactions with Petroleum-Derived and Synthetic Aviation Turbine Fuels

“…An inspection of the sources cited in the Maczynski and Shaw series also provides an overview of experimental methods used to determine water solubility. Methods vary but often rely on direct liquid–liquid (two-phase) exposure, where liquid fuel and liquid water are the two phases. , These experiments are conducted under controlled temperature and pressure conditions, with subsequent analysis of one or both liquid phases after an extended static period. − Quantitation techniques of the water in hydrocarbons also varies and includes direct Karl Fischer titration as well as radioactive tracer monitoring (using tritiated water as a tracer in deuterated water). , …”

“…13−15 Quantitation techniques of the water in hydrocarbons also varies and includes direct Karl Fischer titration as well as radioactive tracer monitoring (using tritiated water as a tracer in deuterated water). 13,16 Other studies have addressed water solubility in aviation turbine fuels. 4−6 The work reported by Zherebtsov and Paganova 5 used a novel liquid−vapor−liquid (three-phase) equilibrium cell, where the liquid fuel and liquid water phases are physically separated by a vapor ullage.…”