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Properties of substance:

ammonium sulfite

Group of substances:

inorganic

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

H8N2O3S

Structural formula as text:

(NH4)2SO3

Molar/atomic mass: 116.14

Melting point (°C):

80.8

Decomposition temperature (°C):

120-170

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
ammonia liquid : insoluble [Ref.]
sulfur dioxide: 0.031 (0°C) [Ref.]
water: 40 (13°C) [Ref.]

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

-387.2 (s)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1120-1121
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 135 [Russian]
  3. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 220 [Russian]
  4. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 464-465 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru