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Properties of substance:

ammonium hydrogen sulfite

Synonyms:

ammonium bisulfite

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

H5NO3S

Structural formula as text:

NH4HSO3

Molar/atomic mass: 99.11

Decomposition temperature (°C):

150

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
water: 71.8 (0°C) [Ref.]
water: 78.41 (25°C) [Ref.]
water: 84.7 (60°C) [Ref.]

Hygroscopic:

yes

Density:

2.03 (g/cm3)

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

-769 (s)

References:

  1. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 3.15
  2. Milne G.W.A. Gardner's Commercially Important Chemicals. - Wiley-Interscience, 2005. - pp. 32
  3. Perry D.L. Handbook of Inorganic Compounds. - 2nd ed. - CRC Press, 2011. - pp. 27
  4. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 98-99 [Russian]
  5. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 464 [Russian]
  6. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 42 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru