Density and volumetric properties of ethane-1,2-diol+di-ethylen-glycol mixtures at different temperatures

Densities, Viscosities, and Self-Diffusion Coefficients of Ethylene Glycol Oligomers

“…Interestingly, the careful study by Carvalho et al reports two density data sets (included in Figures –) independently measured with two different instruments, and our results lie between these two data sets, except for tetraetheylene glycol (Figure ) where our data nearly overlap with their lower density data set. We note in this regard that only few studies even have reported the PEG water content. ,,,, We also note that most literature data sets (Figures –) show constant %RD with temperature relative to our results. This indicates that temperature errors such as calibration or equilibration are not a significant source of measurement error in these and our data sets.…”

“…% Relative deviation (%RD) of diethylene glycol density of results from (a) Ghaedi et al (squares), Klimaszewkski et al (circles), Li et al (triangles), Wang et al (inverted triangles), Huo et al (diamonds), Cocchi et al, (left-pointing triangles), Ren et al (right-pointing triangles), Begum et al (hexagons), Bernal-Garća (stars), and Carvalho et al (plus sign) and (b) Carvalho et al (circles), Crespo et al (triangles), Klimaszewkski et al (inverted triangles), Sagdeev et al , (diamonds), Chen et al (left-pointing triangles), Mesquita et al (right-pointing triangles), Afzal et al (stars), and Pereira et al (plus sign) to the results of this study.…”

“…In this regard, it would be helpful if one could predict the physicochemical properties of polydisperse PEGs based on the analysis of their exact composition. It should be noted that even the low average molar mass PEG 200 covers oligomers from mono- to nonaethylene glycol with tetra- and pentaethylene glycol being the most prominent components. , A perusal of the literature reveals that there are numerous reports on density and viscosity for the neat lowest oligomers diethylene glycol, ,,− ,− trietheylene glycol, ,− ,,,,− ,− ,− ,− and tetraethylene glycol, ,,…”

Synthesis of ordered arrays of discrete, partially crystalline titania nanotubes by Ti anodization using diethylene glycol electrolytes

“…Crystallization is strictly determined by migration of Ti 4+ outward, from the substrate, and O 2À /OH À inward to form crystalline oxide in a ratio that favors crystal growth. 31 Additionally because crystallization of anodic titania can be correlated with ionic transport during the film growth, 32,33 it appears that the chemical properties of the solvent, diethylene glycol, such as inter-and intra-molecular hydrogen bonding, 34,35 and its physical properties such as viscosity play an as yet undetermined role.…”

Volumetric Properties of Binary Mixtures of 2,4,6-Trimethylpyridine with 1,2-Ethanediol, Methanol, and Water, and the Association Energies of the O–H· · ·N Bonded Complexes

“…The chemicals were stored in dark Methanol 786.549 786.37 [22], 786.4 [23], 786.49 [24], 786.5 [25,26], 786.6 [27], 786. 64 [28], 786.65 [29], 786.654 [30] 1,2-Ethanediol 1109.868 1109.6 [31], 1109.7 [32], 1109.87 [33], 1109.88 [34], 1109.90 [35], 1109.91 [36] glass flasks, the alcohols at room temperature, while 2,4,6-trimethylpyridine, which is chemically unstable, in a refrigerator. The mixtures were prepared by mass using an Acculab ATL-224-V analytical balance with an accuracy of ±1 × 10 −3 g. Before measurements, every sample was degassed in an ultrasonic cleaner, Unitra Unima UM4.…”