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Properties of substance:

aluminum arsenate

Group of substances:

inorganic

Physical appearance:

white hexagonal crystals

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

AlAsO4

Structural formula as text:

AlAsO4

Molar/atomic mass: 165.9

Decomposition temperature (°C):

1000

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
water: insoluble [Ref.]

Density:

3.25 (20°C, g/cm3)

Dissociation:

pKsp (1) = 15.8 (20°C, water)

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

-1431.1 (s)

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

145.6 (s)

References:

  1. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 74 [Russian]
  2. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 18-19 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru