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Properties of substance:

calcium arsenate

Group of substances:

inorganic

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

As2Ca3O8

Structural formula as text:

Ca3(AsO4)2

Molar/atomic mass: 398.072

Melting point (°C):

1500

Solubility (g/100 g of solvent):

water: 0.013 (25°C) [Ref.]

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

-3298.7 (s)

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

226 (s)

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

249.79 (s)

LD50 (mg/kg):

20 (rats, oral)
794 (mice, oral)
38 (dogs, oral)

References:

  1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 298
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 89 [Russian]
  3. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 26 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru