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Properties of substance:

antimony(V) fluoride

Synonyms:

antimony pentafluoride

Group of substances:

inorganic

Physical appearance:

colorless liquid

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

F5Sb

Structural formula as text:

SbF5

Molar/atomic mass: 216.74

Melting point (°C):

8.3

Boiling point (°C):

142.7

Solubility (g/100 g of solvent):

bromine trifluoride: soluble [Ref.]
fluorosulfuric acid: soluble [Ref.]
sulfur(VI) chloride fluoride dioxide: miscible [Ref.]
sulfuryl fluoride: miscible (20°C) [Ref.]

Hygroscopic:

yes

Density:

2.99 (23°C, g/cm3)

Reactions:

  1. [Ref.1]
    2O2F2 + 2SbF5 → 2O2SbF6 + F2

Vapour pressure (Torr):

10 (39.2°C)

Viscosity (mPa·s):

460 (20°C)

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

353.1 (g)

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

107.5 (g)

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

43.39

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

-1630.1 (l)

LD50 (mg/kg):

270 (mice, subcutaneous)

References:

  1. Olah G.A., Prakash G.K.S., Molnar A., Sommer J. Superacid chemistry. - 2ed. - Wiley, 2009. - pp. 42-43
  2. Немодрук А.А. Аналитическая химия сурьмы. - М.: Наука, 1978. - pp. 14 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 101 [Russian]
  4. Фтор и его соединения. – Под ред. Саймонса Дж., Т. 1. - М.: ИИЛ, 1953. - pp. 93-95 [Russian]
  5. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 478 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru