Ammonium hydrogen sulfite

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Structural formula
ammonium Bisulfite
General
Surname Ammonium hydrogen sulfite
other names

Ammonium bisulfite

Molecular formula (NH 4 ) HSO 3
Brief description

colorless to yellowish solid with a smell of sulfur dioxide

External identifiers / databases
CAS number 10192-30-0
EC number 233-469-7
ECHA InfoCard 100.030.414
PubChem 10441651
Wikidata Q4138164
properties
Molar mass 99.11 g mol −1
Physical state

firmly

density

2.03 g cm −3

Melting point

50 ° C (decomposition)

Sublimation point

150 ° C (in nitrogen)

solubility

easily in water (2670 g l −1 at 10 ° C)

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 319
EUH: 031
P: 264-271-280-305 + 351 + 338-312
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ammonium hydrogen sulfite is an inorganic chemical compound from the group of ammonium salts and sulfites .

Extraction and presentation

Ammonium hydrogen sulfite is produced, for example, in flue gas desulfurization in the Walter process by injecting ammonia into the exhaust gas flow.

properties

Ammonium hydrogen sulfite is a colorless to yellowish, deliquescent solid with a smell of sulfur dioxide . It is only traded as an aqueous solution. The compound decomposes when exposed to acids with formation of sulfur dioxide, when exposed to alkalis ammonia .

use

Ammonium hydrogen sulfite is used for the sulfurization of wine and also serves as a preservative.

Individual evidence

  1. a b c d e f g h i Entry on ammonium hydrogen sulphite in the GESTIS substance database of the IFA , accessed on January 26, 2015(JavaScript required) .
  2. Michael Schultes: Exhaust gas cleaning: process principles, calculation bases, process comparison . Springer-Verlag, 2011, ISBN 978-3-642-18191-7 , pp. 74 ( limited preview in Google Book search).
  3. ^ Klaus Rädle: Champagne: facts, data, background . book-on-demand.de, 2009, ISBN 978-3-86805-327-2 , p. 74 ( limited preview in Google Book search).
  4. Marina Bährle-Rapp: Springer Lexicon Cosmetics and Body Care . Springer-Verlag, 2013, ISBN 978-3-662-09983-4 ( limited preview in Google book search).