Ammonium sulfite

Structural formula
General
Surname	Ammonium sulfite
other names	Ammonium sulfite; Ammonium bisulfite;
Molecular formula	(NH 4 ) 2 SO 3
Brief description	white odorless solid
External identifiers / databases
EC number	233-484-9
ECHA InfoCard	100.030.428
PubChem	25041
Wikidata	Q2336041
properties
Molar mass	116.14 g mol −1
Physical state	firmly
density	1.41 g cm −3 (monohydrate)
solubility	Easily soluble in water (324 g l −1 at 0 ° C); practically insoluble in ethanol and acetone;
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 315-319-335
	EUH: 031
	P: 261-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ammonium sulfite is an inorganic chemical compound from the group of sulfites .

Extraction and presentation

Ammonium sulphite is formed during flue gas desulphurisation in which sulfur dioxide is washed out of the cooled flue gases after adding ammonia . It is also formed when ammonium thiosulfate decomposes .

properties

Ammonium sulfite is a flammable, white, odorless solid that is easily soluble in water. It decomposes when heated above 60–70 ° C.

use

Ammonium sulphite is used for the production of the food color ammonium sulphite color ( E150d ).

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Entry on ammonium sulfite in the GESTIS material database of the IFA , accessed on July 29, 2014(JavaScript required) .
↑ Entry on AMMONIUM SULFITE in the Hazardous Substances Data Bank , accessed on July 29, 2014.
^ AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 656.
↑ Werner Baltes, Reinhard Matissek: Food chemistry . Springer-Verlag, 2011, p. 258 ( limited preview in Google Book search).

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g Entry on ammonium sulfite in the GESTIS material database of the IFA , accessed on July 29, 2014(JavaScript required) .

[HSDB-2] Entry on AMMONIUM SULFITE in the Hazardous Substances Data Bank , accessed on July 29, 2014.

[Arnold_F._Holleman-3] AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 656.

[Werner_Baltes,_Reinhard_Matissek-4] Werner Baltes, Reinhard Matissek: Food chemistry . Springer-Verlag, 2011, p. 258 ( limited preview in Google Book search).