Main page (Russian) Search in database (English)

Properties of substance:

uranium(IV) fluoride

Synonyms:

uranium tetrafluoride

Group of substances:

inorganic

Physical appearance:

green monoclinic crystals

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

F4U

Structural formula as text:

UF4

Molar/atomic mass: 314.02

Melting point (°C):

1003

Boiling point (°C):

1418

Solubility (g/100 g of solvent):

water: 0.004 (20°C) [Ref.]

Density:

6.8 (20°C, g/cm3)

Vapour pressure (Torr):

0.00019 (760°C)
10 (1089°C)
100 (1243°C)

Surface tension (mN/m):

191 (1060°C)
183 (1100°C)
164 (1200°C)
145 (1300°C)
126 (1400°C)

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

-1883 (s)

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

-1761 (s)

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

152 (s)

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

116 (s)

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

-1592 (g)

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

349 (g)

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

91 (g)

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

47

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

200

References:

  1. 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. 21-30 [Russian]
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 206-207 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 106 [Russian]
  4. Успехи химии. - 1961. - Т.30, №12. - pp. 1492-1500 [Russian]

    What information do you need?




    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru