Ammonium sulfite

Ammonium sulfite
Ball-and-stick model of two ammonium cations and one sulfite anion
Names
IUPAC name
Ammonium sulfite
Other names
Ammonium sulphite, Diammonium sulfite, Diammonium sulfonate, Sulfurous acid, Diammonium salt, Sulfurous acid, ammonium salt(1:2)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.428 Edit this at Wikidata
EC Number
  • 233-484-9
UNII
UN number 3077
  • InChI=1S/2H3N.H2O3S/c;;1-4(2)3/h2*1H3;(H2,1,2,3) checkY
    Key: PQUCIEFHOVEZAU-UHFFFAOYSA-N checkY
  • [H][N+]([H])([H])[H].[H][N+]([H])([H])[H].O=S([O-])[O-]
  • [O-]S([O-])=O.[NH4+].[NH4+]
Properties
(NH4)2SO3
Molar mass 116.14 g/mol
Appearance colourless[1] hygroscopic crystals[2]
Melting point 65 °C (149 °F; 338 K) decomposes[1]
35 g/100 mL[1]

32.4g/100mL at 0 degrees Celsius[3]

60.4g/100mL at 100 degrees Celsius[3]

Solubility Insoluble in acetone and alcohol[2]
1.515.[3]
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation mark
Danger
H314
P260, P264, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P332+P313, P337+P313, P362, P363, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Flash point Not Flammable[2]
Related compounds
Other anions
 Ammonium hydroxide Ammonium thiosulfate Ammonium sulfate Ammonium bisulfate Ammonium persulfate
Other cations
 Sodium sulfite
Potassium sulfite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium sulfite is the ammonium salt of sulfurous acid with the chemical formula (NH4)2SO3.

  1. ^ a b c "Chemical Entity Data Page".
  2. ^ a b c Cite error: The named reference MSDS was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference pubchem was invoked but never defined (see the help page).