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Properties of substance:

barium fluoride

Group of substances:

inorganic

Physical appearance:

colorless cubic crystals

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

BaF2

Structural formula as text:

BaF2

Molar/atomic mass: 175.34

Melting point (°C):

1280

Boiling point (°C):

2140

CAS №: 7787-32-8

Solubility (g/100 g of solvent):

bromine trifluoride: 3.66 (25°C) [Ref.]
bromine trifluoride: 5.44 (70°C) [Ref.]
ethyl acetate: insoluble [Ref.]
hydrogen fluoride : 3.61 (-23°C) [Ref.]
hydrogen fluoride : 4.74 (-3.3°C) [Ref.]
hydrogen fluoride : 5.6 (12.2°C) [Ref.]
sulfur dioxide: 0.02 (25°C) [Ref.]
water: 0.159 (10°C) [Ref.]
water: 0.15 (20°C) [Ref.]
water: 0.13 (40°C) [Ref.]
water: 0.11 (60°C) [Ref.]
water: 0.09 (80°C) [Ref.]
water: 0.08 (100°C) [Ref.]

Density:

4.83 (20°C, g/cm3)

Vapour pressure (Torr):

1 (1436°C)
10 (1639°C)
100 (1905°C)

Dissociation:

pKsp (0) = 5.77 (20°C, water)

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

-1200 (s)

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

-1149 (s)

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

96.2 (s)

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

71.21 (s)

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

12.6

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

347

LD50 (mg/kg):

250 (rats, oral)
29.91 (mice, intraperitoneal)

References:

  1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 342
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 165
  3. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 142 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 55 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 281, 813 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru