Volumetric properties of aqueous solutions of diethylsulfoxide at temperatures from 298.15 K to 343.15 K

Vapor–liquid equilibrium for the binary mixtures of dimethylsulfoxide with substituted benzenes

“…The densities were measured using a standard bicapillary pycnometer, giving an accuracy of 2 parts in 10 5 . Boiling points at 95.3 kPa were measured by Swietoslawski type ebulliometer [10] with an accuracy of ±0.2 K. The measured values are in good agreement with literature values [1,11] and are included in Table 1.…”

Thermodynamic Interactions in Binary and Ternary Systems Containing Sulfolane, Dimethylsulfoxide, Toluene and Water at 303.15K .

“…(2), which is related to the composition of dimethylsulfoxide + water. Such behavior is similar to that obtained by Markarian and co workers (7) Such behavior is a result of destroying the self -associated water molecules (breaking hydrogen bonds in water) and a new complex is formed through hydrogen bonding between sulfoxide group of DMSO and the hydroxyl group of water. This indicates that the new hydrogen bonding in DMSO -water mixtures are stronger than that between pairs of water and dipolar association in DMSO.…”

Effect of diethylsulfoxide on the thermal denaturation of DNA

“…In this respect, it should be stated that, for binary mixtures DESO þ water and DMSO þ water, the dependences of density against sulfoxide concentration in both cases are similar and linear. 8 Thus, one can conclude that the observed different behavior for DESO-containing solutions possibly arises from other types of interactions with DNA, probably with the participation of the two ethyl chains of DESO. Figure 5 presents the dependences of the melting temperature against the partial volume fraction of water in the two solutions containing DMSO and DESO.…”

“…Another very important factor is the structural change of the whole aqueous solution, partly due to the insertion of the nonpolar ethyl groups of DESO into the intercluster space of water, which leads to the setting of hydrophobic interactions. 8 In this article we present new results of the DESO influence on the thermal denaturation of DNA studied by two methods: UV absorption and vibrating-tube densimetry. To elucidate the effect of DESO on the thermal denaturation of DNA, the results obtained were compared with those for DMSO.…”