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Properties of substance:

cesium hydroxide

Group of substances:

inorganic

Physical appearance:

white crystals

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

HCsO

Structural formula as text:

CsOH

Molar/atomic mass: 149.91

Melting point (°C):

272

Sublimation point (°C):

400

Solubility (g/100 g of solvent):

ammonia liquid : 1.45 (-40°C) [Ref.]
ethanol: very soluble [Ref.]
water: 385.6 (15°C) [Ref.]
water: 303 (30°C) [Ref.]

Hygroscopic:

yes

Density:

3.68 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1]
    2Cs/Hg + 2H2O → 2CsOH + H2 + 2Hg
  2. [Ref.1]
    Cs2SO4 + Ba(OH)2 → 2CsOH + BaSO4

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

-406.7 (s)

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

-362.3 (s)

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

93.3 (s)

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

6.74

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

-264 (g)

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

255 (g)

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

50 (g)

LD50 (mg/kg):

760 (white mice, oral)

References:

  1. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.3. - Л.: Химия, 1976. - pp. 328 [Russian]
  2. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 58 [Russian]
  3. Карапетьянц М.Х., Дракин С.И. Общая и неорганическая химия. - М.: Химия, 1981. - pp. 308 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 111 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru