Phase Diagram of the Ethylene Glycol–Dimethylsulfoxide System
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The phase diagram of ethylene glycol (EG)–dimethylsulfoxide (DMSO) system is studied in the temperature range of +25 to −140°C via differential scanning calorimetry. It is established that the EG–DMSO system is characterized by strong overcooling of the liquid phase, a glass transition at −125°C, and the formation of a compound with the composition of DMSO · 2EG. This composition has a melting temperature of −60°C, which is close to those of neighboring eutectics (−75 and −70°C). A drop in the baseline was observed in the temperature range of 8 to −5°C at DMSO concentrations of 5–50 mol %, indicating the existence of a phase separation area in the investigated system. The obtained data is compared to the literature data on the H2O–DMSO phase diagram.
Keywordsethylene glycol–dimethylsulfoxide system phase diagram differential scanning calorimetry
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- 2.M. N. Rodnikova, Zh. Fiz. Khim. 67, 275 (1993).Google Scholar
- 4.D. Martin and H. G. Hanthal, Dimethyl Sulfoxide (Wiley, New York, 1975).Google Scholar
- 8.E. Shalaev and F. Franks, in Amorphous Food and Pharmaceutical Systems, Ed. by H. Levine (RSC, Cambridge, UK, 2002), p.200.Google Scholar
- 10.Aldrich Catalogue Handbook of Fine Chemicals (Aldrich, 1989).Google Scholar
- 11.O. Ya. Osipov, V. I. Minkin, and A. D. Granovskii, Handbook on Dipole Moments (Vysshaya Shkola, Moscow, 1971) [in Russian].Google Scholar
- 12.CRC Handbook of Chemical Physics, 74th ed. (CRC, Boca Raton, FL, 1993–1994).Google Scholar
- 13.W. Ch. Landolt-Bornstein, Group IV Physical Chemistry, Ed. by M. D. Lechner (Springer, Berlin, Heidelberg, 2009), Vol. 25. doi 10.1007/978-3-540-75486-2Google Scholar