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Properties of substance:

antimony(III) iodide

Synonyms:

antimony triiodide

Group of substances:

inorganic

Physical appearance:

red hexagonal crystals

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

I3Sb

Structural formula as text:

SbI3

Molar/atomic mass: 502.47

Melting point (°C):

170.5

Boiling point (°C):

401.6

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
arsenic trichloride: soluble [Ref.]
benzene: soluble [Ref.]
carbon disulphide: soluble [Ref.]
carbon tetrachloride: insoluble [Ref.]
chloroform: insoluble [Ref.]
dimethylamine: very soluble [Ref.]
ethanol: insoluble [Ref.]
ethanol 80%: reaction [Ref.]
iodine liquid: soluble [Ref.]
methylene iodide: 11.3 (12°C) [Ref.]
oil of turpentine: insoluble [Ref.]
phosphorus trichloride: soluble [Ref.]
phosphorus(V) trichloride oxide: soluble [Ref.]
sulfur dioxide: 0.013 (0°C) [Ref.]
tin tetrachloride: soluble [Ref.]
trimethylamine: insoluble [Ref.]
water: reaction [Ref.]

Density:

4.92 (22°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster]
    2Sb + 3I2 → 2SbI3

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

-100.4 (s)

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

-7.9 (g)

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

399.6 (g)

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

81.6 (g)

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

18

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

61

References:

  1. Comey A. M., Hahn D. A. A dictionary of Chemical Solubilities Inorganic. - 2 ed. - New York, The MacMillan Company, 1921. - pp. 50
  2. Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 104-105
  3. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 283
  4. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1482-1483
  5. Гринвуд Н., Эрншо А. Химия элементов. - Т.1. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 522 [Russian]
  6. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 196-197 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 955-956 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru