Density and Viscosity of Anhydrous Mixtures of Dimethylsulfoxide with Acetonitrile in the Range (298.15 to 318.15) K

Abstract

The density and viscosity of dimethylsulfoxide (DMSO) + acetonitrile (AN) mixtures were determined over the whole composition range at T ) (298.15, 303.15, 308.15, 313.15, and 318.15) K. Since experimental density values showed to be very sensitive to water content, the water-free values of these magnitudes were determined by extrapolation from data obtained on ternary mixtures with small, well-determined, amounts of water and constant x DMSO /x AN . Excess volumes of the anhydrous mixtures show positive values with a quite symmetrical behavior. Viscosity data were satisfactorily fitted with a sixth degree polynomial. Excess viscosities as well as activation parameters for viscous flow in the mixtures were calculated.

Volumetric properties of binary mixtures of dimethyl sulfoxide with amines from (293.15 to 363.15)K

“…The average absolute relative deviation (AARD%) for the density calculations using the equation (1) compared with different investigators were represented in table 6 [10,[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. The average absolute relative deviation was 0.05% for 99 data points, which is a satisfactory result.…”

Multi-stimuli responsive luminescent azepane-substituted β-diketones and difluoroboron complexes

“…ethylene glycol) were not chosen, given the dyes showed limited solubility. The ligands were dissolved in DMSO (viscosity: 1.996 cP at 25 °C)/acetonitrile (viscosity: 0.3417 cP at 25 °C) binary mixtures 44 to achieve a series of solutions with similar polarities (similar dipole moments: 3.92 D for acetonitrile and 3.96 D for DMSO) and the same concentration (10 −5 M), but different viscosities (Figures 4 and S9 – S10). For example, L-Br (Figure 4) was dissolved in DMSO/acetonitrile solvent mixtures with different compositions, from 0–100% acetonitrile.…”

The measurement of the diffusion coefficients of ferrocene and ferrocenium and their temperature dependence in acetonitrile using double potential step microdisk electrode chronoamperometry

“…4 and values of E a,D = 6.5 (±0.2) and 7.2 (±0.5) kJ mol À1 were achieved, respectively, from the gradient of the best-fit line (R 2 > 0.999). The E a,D (Fc) value can be compared with that reported in literature, 6.9 (±0.7) kJ mol À1 [34], and an activation energy of viscosity, E a,g of 6.5 kJ mol À1 for acetonitrile, which was calculated from viscosity/temperature measurements reported in the literature [38]. As the activation energy values are very similar for both Fc and Fc + , it can be said that Fc + either fully ion-pairs with the perchlorate anion, or exists as free-ions, with no interaction between the oxidation species and the electrolyte occurring in this system.…”