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Properties of substance:

uranium(III) fluoride

Group of substances:

inorganic

Physical appearance:

reddish violet hexagonal crystals

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

F3U

Structural formula as text:

UF3

Molar/atomic mass: 295.02

Melting point (°C):

1495

Boiling point (°C):

2300

Solubility (g/100 g of solvent):

water: insoluble [Ref.]

Density:

8.96 (20°C, g/cm3)

Vapour pressure (Torr):

10 (1657°C)
100 (1944°C)

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

-1443 (s)

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

-1418 (s)

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

117 (s)

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

-1036 (g)

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

332 (g)

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

74 (g)

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

37

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-97
  2. Галкин Н.П., Майоров А.А., Верятин У.Д., Судариков Б.Н., Николаев Н.С., Шишков Ю.Д., Крутиков А.Б. Химия и технология фтористых соединений урана. - М.: ГИЛОАНТ, 1961. - pp. 20-21 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 109 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 106 [Russian]
  5. Успехи химии. - 1961. - Т.30, №12. - pp. 1491-1492 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru