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Properties of substance:

calcium sulfide

Group of substances:

inorganic

Physical appearance:

colorless cubic crystals

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

CaS

Structural formula as text:

CaS

Molar/atomic mass: 72.14

Melting point (°C):

2000

Solubility (g/100 g of solvent):

ethyl acetate: insoluble [Ref.]

Density:

2.18 (15°C, g/cm3)

Reactions:

  1. [Ref.1aster]
    CaS + MgCl2 + 2H2O → CaCl2 + Mg(OH)2 + H2S

Refractive index (nD):

2.137 (20°C)

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

-482.4 (s)

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

-477.4 (s)

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

56.5 (s)

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

47.7 (s)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 326
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 138-139 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 177 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 72 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru