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Properties of substance:

barium oxide

Group of substances:

inorganic

Physical appearance:

colorless cubic crystals

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

BaO

Structural formula as text:

BaO

Molar/atomic mass: 153.34

Melting point (°C):

1920

Boiling point (°C):

2000

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
ammonia liquid : insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: soluble [Ref.]
hydrazine: insoluble [Ref.]
methanol: very soluble [Ref.]
methyl acetate: insoluble [Ref.]
water: reaction [Ref.]

Density:

5.72 (20°C, g/cm3)

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

-558.1 (s)

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

-528.4 (s)

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

70.3 (s)

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

47.45 (s)

LD50 (mg/kg):

300 (mice, intraperitoneal)

References:

  1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 343
  2. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 136 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 170 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 55 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 32-33 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru