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Properties of substance:

rhenium

Group of substances:

inorganic

Physical appearance:

hexagonal metal

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

Re

Structural formula as text:

Re

Molar/atomic mass: 186.21

Melting point (°C):

3190

Boiling point (°C):

5600

Solubility (g/100 g of solvent):

mercury: insoluble [Ref.]
water: insoluble [Ref.]

Numerical data:

Year of discovery: 1925
Superconducting temperature (K): 1.697

Density:

21.04 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    2KReO4 + 7H2 → 2Re + 2KOH + 6H2O
  2. [Ref.1aster]
    2NH4ReO4 + 7H2 → 2Re + 2NH3 + 8H2O

Reactions:

  1. [Ref.1aster]
    Re + 3F2 → ReF6
  2. Yeild 80%. [Ref.1aster]
    2Re + 5Cl2 → 2ReCl5

Vapour pressure (Torr):

0.01 (3060°C)
0.1 (3375°C)
1 (3760°C)
10 (4250°C)
100 (4880°C)

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

0 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

0 (s)

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

36.5 (s)

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

25.2 (s)

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

33.5

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

715.5

LD50 (mg/kg):

10000 (rats, intraperitoneal)

References:

  1. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 175-178
  2. Вредные химические вещества: Неорганические соединения элементов V-VIII групп. Справочник. - Л., 1989. - pp. 424-425 [Russian]
  3. Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 91 [Russian]
  5. Редкие и рассеянные элементы. Химия и технология. - Кн. 3. - М.: Мисис, 2003. - pp. 313-315, 333-365 [Russian]
  6. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 236-238 [Russian]
  7. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 505 [Russian]
  8. Химия и технология редких и рассеянных элементов. - Ч.3. - М.: Высшая школа, 1976. - pp. 277-279 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru