Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


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Russian
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Article
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[544.344.016+536.44]:[544.344.013-16-14+544.344.3]

Phase Equilibria in the Ternary System “Potassium Iodide – Water – Tert-Butyl Alcohol” within 5–30°C

Autors: 
Varlamova T. M., Saratov State University
Abstract: 

Studying of the influence of the salt nature and temperature on the liquid-liquid equilibrium in the ternary systems “salt – binary solvent” is topical for the development of the salting-in–salting- out theory. In addition, the ternary potassium iodide-water-alcohol systems are constituents of the quaternary iodine – potassium iodide – water – alcohol ones, studying of which is of practical interest in terms of determining the mixed solvent compositions with the highest iodine-dissolving power. In this paper, phase equilibria and critical phenomena in the ternary system “potassium iodide – water – tert-butyl alcohol” were studied by the visual-polythermal method within 5–30°C and salt solubility values in the water-alcohol mixtures were obtained. The temperature of the critical tie line of monotectic equilibrium was found (10.3°C), corresponding to the beginning of delamination in the system under study. Phase equi- libria polytherms of the studied cuts of the KI–H2O–t-BuOH system were plotted and the dependences of the contents of potassium iodide and tert-butyl alcohol in critical solutions on temperature were established. The results of our polythermal studies were used to construct the isothermal phase diagrams of the ternary KI–H2O–t-BuOH system at several temperatures.

Reference: 
  1. Варламова Т. М., Герасимова Г. В., Антонова Е. В., Голубничева Е. М. Растворимость иодида калия в водно-спиртовых смесях // Химические науки-2006 : сб. науч. тр. Саратов : Науч. кн., 2006. Вып. 3. С. 32–35.
  2. Рубцова Е. М., Варламова Т. М., Монахова Ю. Б., Муштакова С. П. Фазовая диаграмма системы иод – иодид калия – вода – пропиловый спирт при 298.15 К // Журн. физ. химии. 2015. Т. 89, № 6. С. 927–932.
  3. Туркин А. Д. Дозиметрия радиоактивных газов. М. : Атомиздат, 1973. 160 с.
  4. Монахова Ю. Б., Варламова Т. М., Рубцова Е. М., Муштакова С. П. Фазовые диаграммы систем иод – вода – алканол, иодид калия – вода – алканол и закономерности ассоциации по данным ИК- и ЯМР-спектроскопии // Журн. физ. химии. 2015. Т. 89, № 4. С. 611–616.
  5. Сперкач В. С., Шахпаронов М. И. Физика и физикохимия жидкости. М. : Изд-во МГУ, 1976. Вып. 3. С. 64–86.
  6. Белоусов В. П., Морачевский А. Г. Теплоты смешения жидкостей. М. : Химия, 1970. 256 с.
  7. Ginnings P. M., Robbins D. Temaru systems : water, tertiary butanol and salts at 30° // J. Amer. Chem. Soc. 1930. Vol. 52. P. 2282–2283.
  8. Рабинович В. А., Хавин З. Я. Краткий химический справочник / под ред. А. А. Потехина, А. И. Ефимова. Л. : Химия, Ленингр. отд -ние, 1991. 432 с.
  9. Инструкция. Хроматографы газовые Agilent модели 6890. Методика поверки / ГПИ СИ ФГУП «ВНИИМС». М., 2007. 8 с.
  10. Аносов В. Я., Озерова М. И., Фиалков Ю. Я. Основы физико-химического анализа. М. : Наука, 1976. 504 с.