Excess Molar Volumes and Viscosities for Glycol Ether−Water Solutions at the Temperature 308.15 K:  Ethylene Glycol Monomethyl, Diethylene Glycol Monomethyl, and Triethylene Glycol Monomethyl Ethers

Abstract

Excess molar volumes and viscosities (η) have been determined as a function of mole fraction for binary liquid mixtures of water with ethylene glycol monomethyl ether (2-methoxyethanol), CH3O(CH2)2OH, diethylene glycol monomethyl ether (2-(2-methoxyethoxy)ethanol), CH3O(CH2)2O(CH2)2OH, and triethylene glycol monomethyl ether (2-[2-(2-methoxyethoxy)ethoxy]ethanol), CH3O(CH2)2O(CH2)2O(CH2)2OH, at 308.15 K. Densities (ρ) of the mixtures have been calculated from the results. The excess volumes are negative over the entire composition range for the systems studied. The results for and η are discussed in terms of interactions of water with an amphiphilic molecule.

Densities and Viscosities of Triethylene Glycol Monomethyl Ether +Water Solutions in the Temperature Interval 25 °C−80 °C

“…Experimentally measured viscosities of the binary aqueous solutions of TEGMME at (25, 40, 50, 60, 70, and 80°C ) are listed in Table 5 and shown in Figure 7. Only few viscosity measurements were made for comparison with values published by Pal and Singh (1996) at 35°C. Figure 7 shows a sharp increase in the viscosity of the mixture after the addition of TEGMME.…”

“…Comparison of the excess molar volumes of TEGMME (2) + water (1) system at 25°C and 35°C: (b) 25°C, this work; (O) 25°C,Pal and Singh, 1995; (9) 35°C, this work; (0) 35°C,Pal and Singh, 1996. …”

Component Interactions in Jet Fuels: Fuel System Icing Inhibitor Additive

“…7) and  increases. 29,44 Overall, therefore, increasing DiEGME concentration will be expected to cause a reduction in the rate of liquid uptake by absorbent media. This is evident from the swelling profiles shown in Fig.…”

Investigation on Temperature-Dependent Volumetric and Acoustical Properties of Homologous Series of Glycols in Aqueous Sorbitol Solutions

“…The liquid mixtures containing glycols are extensively used in the cosmetic, pharmaceutical, biotechnological, and food industries. − Ethylene glycols are the liquids which are miscible in water in the whole composition range, and due to their hygroscopic nature, are highly soluble in polar solvent owning H-bonding. − These glycols are broadly used in the plastic industry where they are used in the preparation of polyethylene terephthalate which is used further to make plastic bottles for the pharmaceutical and food industry. − Ethylene glycols (EGs) are solvents possessing oxy and hydroxyl groups in the same molecule due to which the formation of inter- and intramolecular hydrogen bonds between −O– and −OH groups has been observed . A considerable amount of work has already been published on densities and speeds of sound of EGs with water, ethers, alcohols, and amides, − but to best of our knowledge no data is available on the study of thermodynamic properties of glycols with sugar alcohols.…”

“…It is often used as a substitute to sugar in various diet foods (including soft drinks and ice cream), cough syrups, mints, and sugar-free chewing gum. − To store these diet foods, various containers are used from the plastic industry where EGs play a major role; therefore, it is also important to study the interaction of sorbitol with EGs. Despite numerous applications of mixtures containing sorbital, much less work has been done on their thermodynamic study. − Also thermo-acoustical properties of glycols have been studied with water, alcohols, amides, and ethers, − but so far to best of our knowledge no data are available on densities and speeds of sound of mixtures of sorbitol and ethylene glycols. In the present study, we carry out a systematic study on the volumetric and acoustical properties of ethylene glycol (EG), diethylene glycol (DEG), and triethylene glycol (TEG) in aqueous sorbitol solutions at different temperatures T = (288.15, 298.15, 308.15, 318.15) K and the experimental pressure of 0.1 MPa.…”