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Properties of substance:

potassium perrhenate

Group of substances:

inorganic

Physical appearance:

colorless hexagonal crystals

Empirical formula (Hill's system for organic substances):

KO4Re

Structural formula as text:

KReO4

Molar/atomic mass: 289.303

Melting point (°C):

555

Boiling point (°C):

1370

Solubility (g/100 g of solvent):

deuterium oxide: 0.987 (25°C) [Ref.]
ethanol: sparingly soluble [Ref.]
water: 1.21 (20°C) [Ref.]
water: 14 (100°C) [Ref.]

Density:

4.38 (20°C, g/cm3)

Reactions:

  1. [Ref.1aster]
    2KReO4 + 7H2 → 2Re + 2KOH + 6H2O
  2. [Ref.1aster]
    2KReO4 + 6KI + 16HCl → 2K2ReCl6 + 4KCl + 3I2 + 8H2O

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-1113 (s)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

167.8 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

122.6 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

32

LD50 (mg/kg):

2800 (mice, intraperitoneal)

References:

  1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 12ed., Vol. 1-5. - Wiley, 2012. - pp. 3740
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 856
  3. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 130-131 [Russian]
  4. Редкие и рассеянные элементы. Химия и технология. - Кн. 3. - М.: Мисис, 2003. - pp. 320 [Russian]
  5. Сонгина О.А. Редкие металлы. - 3 изд. - М.: Металлургия, 1964. - pp. 29-30 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 170 [Russian]
  7. Справочник экспериментальных данных по растворимости солевых систем. - Т. 3. - Л.: ГНТИХЛ, 1961. - pp. 1960-1962 [Russian]
  8. Химия и технология редких и рассеянных элементов. - Ч. 3. - М.: Высшая школа, 1976. - pp. 282-284 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru