Molecular association in water-isomeric pentanol mixtures at 25�C

Disruption of the self-molecular association of pentanol in binary mixtures with alkylbenzoates: a dielectric relaxation spectroscopy study

“…6, it is observed that g eff for the binary mixture is concentration dependent and it increases with the addition of 1-pentanol, 2-pentanol and 3-pentanol. The present work indicates that g eff increases with isomeric pentanol concentration and it has been postulated in a similar system 24 that the increase shows the presence of an anti-parallel conguration of the dipoles. This increase in g eff with pentanol content suggests the reorientation of neighboring polar molecules in a mixture with the parallel alignment of the electric dipoles.…”

“…9 The static dielectric constant value for pure 2-pentanol and pure 3-pentanol is found to be in good agreement with the values evaluated by D'Aprano et al using a bridge method. 24 From ESI Table S2 † and Fig. 2, it is clear that the static dielectric constant increases for all binary mixtures of alkylbenzoate and pentanol with an increase in 1-pentanol (1P), 2-pentanol (2P) and 3-pentanol (3P) concentration.…”

Distribution of lithium chloride, sodium chloride, potassium chloride, hydrochloric acid, magnesium chloride, and calcium chloride between octanol and water

“…It is found that the addition of water (e = 78.3) to octanol (e = 10.01 (19)) results in a decrease in the relative permittivity of the solution; for water-saturated octanol, t = 8.1 (6). This behavior is well documented for other higher alcohols as well (20)(21)(22) and can be interpreted as the formation of "complexed" water molecules (e.g., H20-(R0H)4), which have a low dipole moment, or simply a change in the structure of octanol to one with lower polarizability (20,21). Further evidence of the reorganization of the octanol is the decrease in viscosity that accompanies an increase in water content.…”

Enzyme Dehydration Using Microglassification™ Preserves the Protein's Structure and Function

“…Note that this slightly nonlinear trend for refractive index versus water concentration is in agreement with other measures of the same property for isomeric pentanol in water. 34 The solubility limit of water in n-pentanol was found to be 11.43 g water/100 g n-pentanol, which corresponds to 10.31 g water/100 g solution. The solubility limit values calculated using refractive index and Karl Fischer titration methods, and the diffusion coefficient of water in each solvent are shown in Table 1.…”