Phase Diagram of the Ethylene Glycol–Dimethylsulfoxide System
- Авторы: Solonina I.1, Rodnikova M.1, Kiselev M.2, Khoroshilov A.1, Shirokova E.1
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Учреждения:
- Kurnakov Institute of General and Inorganic Chemistry
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Выпуск: Том 92, № 5 (2018)
- Страницы: 918-921
- Раздел: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/169998
- DOI: https://doi.org/10.1134/S0036024418050291
- ID: 169998
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Аннотация
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.
Об авторах
I. Solonina
Kurnakov Institute of General and Inorganic Chemistry
Email: rodnikova@igic.ras.ru
Россия, Moscow, 119991
M. Rodnikova
Kurnakov Institute of General and Inorganic Chemistry
Автор, ответственный за переписку.
Email: rodnikova@igic.ras.ru
Россия, Moscow, 119991
M. Kiselev
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: rodnikova@igic.ras.ru
Россия, Moscow, 119071
A. Khoroshilov
Kurnakov Institute of General and Inorganic Chemistry
Email: rodnikova@igic.ras.ru
Россия, Moscow, 119991
E. Shirokova
Kurnakov Institute of General and Inorganic Chemistry
Email: rodnikova@igic.ras.ru
Россия, Moscow, 119991