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Properties of substance:

calcium hexafluorosilicate

Group of substances:

inorganic

Physical appearance:

colorless tetragonal crystals

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

CaF6Si

Structural formula as text:

CaSiF6

Molar/atomic mass: 182.154

Decomposition temperature (°C):

370

Solubility (g/100 g of solvent):

ethanol: soluble [Ref.]
water: 17.72 (20°C) [Ref.]
water: 18.96 (50°C) [Ref.]
water: 21.33 (100°C) [Ref.]

Density:

2.66 (18°C, g/cm3)

Dissociation:

pKsp (0) = 3.09 (20°C, water)

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

-2898.7 (s)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 298
  2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 140-141 [Russian]
  3. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 169 [Russian]
  4. Лурье Ю.Ю. Справочник по аналитической химии. - М.: Химия, 1979. - pp. 96 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 26 [Russian]
  6. Фтор и его соединения. – Под ред. Саймонса Дж., Т. 1. - М.: ИИЛ, 1953. - pp. 120 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru