Densities and excess volumes of binary and ternary mixtures of N, N-dimethyl sulfoxide, N,N-dimethylacetamide, and N-methyl-2-pyrrolidone at T = (293.15, 313.15)K and atmospheric pressure

Жучков, В. И.; Раева, В. М.; Фролкова, А. К.

doi:10.1016/j.cdc.2022.100840

Cited by 5 publications

(2 citation statements)

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“…The relative inertness, stability at high temperature, environmental compatibility, and low toxicity of DMSO make it a very good cosolvent apart from water, which is undoubtedly the greenest and most ideal. DMSO molecules interact with other substances through van der Waals forces and hydrogen bonding. , The presence of water in DES increases its mobility while maintaining its uniqueness in properties. The other important property is electrical conductivity, which is greatly affected by the presence of water content in DES .…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical Properties of Choline Chloride/Acetic Acid as a Deep Eutectic Solvent and Its Binary Solutions with DMSO at 298.15 to 353.15 K

Sheikh,

Khan,

Ahmed

2024

ACS Omega

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Deep eutectic solvents (DESs) are considered to play an important role in green chemistry and other technological fields as an alternative to organic solvents. The present study reports measurements of density (ρ), speed of sound (u), dynamic viscosity (η), and electrical conductivity (κ) and investigates physicochemical properties of choline chloride/acetic acid (ChCl/AcA DES) and its binary mixtures with dimethyl sulfoxide (DMSO) over the entire composition and temperature (298.15−353.15 K) range. The density data are well fitted by a second-degree polynomial equation in T. DES/DMSO mixtures exhibit negative excess molar volume and isentropic compressibility deviation with a minimum in respective curves at x 1 ≈ 0.15 (x 1 is the mole fraction of DES in the mixture), which became deeper with increasing temperature. The ChCl/AcA DES and DMSO curves for excess partial molar volume cross each other at x 1 ≈ 0.15, showing that the packing effect is dominant over specific interactions. A similar behavior is observed for excess molar viscosity, showing the minima at x 1 ≈ 0.62, and substantiates volumetric results. The temperature dependence of viscosity and conductivity is well described by the Vogel−Fulcher−Tammann (VFT) equation.

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Section: Introductionmentioning

confidence: 99%

“…DMSO molecules interact with other substances through van der Waals forces and hydrogen bonding. 33 , 34 The presence of water in DES increases its mobility while maintaining its uniqueness in properties. The other important property is electrical conductivity, which is greatly affected by the presence of water content in DES.…”

Section: Introductionmentioning

confidence: 99%