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Properties of substance:

beryllium oxide

Group of substances:

inorganic

Physical appearance:

colorless hexagonal crystals

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

BeO

Structural formula as text:

BeO

Molar/atomic mass: 25.01

Melting point (°C):

2530

Boiling point (°C):

4120

Solubility (g/100 g of solvent):

ammonia liquid : insoluble [Ref.]
boron oxide molten: 0.2 [Ref.]
water: 0.00002 (20°C) [Ref.]

Numerical data:

Vickers hardness (GPa): 13

Density:

3.01 (20°C, g/cm3)

Refractive index (nD):

1.719 (20°C)

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

-598 (s)

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

-582 (s)

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

14.1 (s)

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

25.5 (s)

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

71

LD50 (mg/kg):

2062 (mice, oral)

References:

  1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 425
  2. Беляев Р.А. Окись бериллия. - 2 изд. - М.: Атомиздат, 1980 [Russian]
  3. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 93 [Russian]
  4. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 117 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 56 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 25 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru