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Properties of substance:

carbon tetrabromide

Synonyms:

tetrabromomethane

Group of substances:

organic

Physical appearance:

colorless monoclinic crystals

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

CBr4

Structural formula as text:

CBr4

Molar/atomic mass: 331.65

Melting point (°C):

92.3

Boiling point (°C):

189.5

Decomposition temperature (°C):

189.5

CAS №: 558-13-4

Solubility (g/100 g of solvent):

bromine liquid: soluble [Ref.]
carbon disulphide: very soluble [Ref.]
chloroform: soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
water: 0.024 (30°C) [Ref.]

Density:

2.9609 (100°C, d4)

Reactions:

  1. Ethane is brominated by tribromomethane or tetrabromomethane in the presence of aluminum bromide for 6 h at 55-65 °C form ethylbromide. Yeild 60%. [Ref.1]
    C2H6 + CHBr3 → C2H5Br + CH2Br2

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

29.4 (s)

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

47.7 (s)

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

212.5 (s)

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

144.3 (s)

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

4

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

38

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

83.9 (g)

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

67 (g)

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

358.1 (g)

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

91.2 (g)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-468, 5-19
  2. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 1
  3. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 16
  4. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 204-205 [Russian]
  5. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 530 [Russian]
  6. Реми Г. Курс неорганической химии. - Т.1. - М., 1963. - pp. 480 [Russian]
  7. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 232-233 [Russian]
  8. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1042-1043 [Russian]
  9. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 1018-1019 [Russian]
  10. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 570 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru