Ammonium nitrite

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Structural formula
Ammonium ion Nitrition
General
Surname Ammonium nitrite
Molecular formula NH 4 NO 2
Brief description

small prisms

External identifiers / databases
CAS number 13446-48-5
EC number 236-598-7
ECHA InfoCard 100.033.257
PubChem 102601896
ChemSpider 24223
Wikidata Q421538
properties
Molar mass 64.04 g mol −1
Physical state

firmly

solubility

Decomposes in water

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ammonium nitrite is an ammonium salt of nitrous acid . It has the formula NH 4 NO 2 .

properties

Ammonium nitrite forms colorless, needle-shaped crystals. The connection is unstable and is very easily oxidized by atmospheric oxygen even at room temperature , which can be accelerated even further by high humidity. The crystals turn yellow.

hazards

If the ammonium nitrite is heated in its crystal form, it explodes from a temperature of 60–70 ° C. However, smaller impacts are also sufficient to cause spontaneous explosions.

Reactions

Ammonium nitrite breaks down into nitrogen and water :

use

Ammonium nitrite can be used to synthesize hydroxylamine . It is also suitable as a solid nitrogen source , for example to synthesize salts of NH 2 OH.

Individual evidence

  1. a b Entry on ammonium nitrite. In: Römpp Online . Georg Thieme Verlag, accessed on June 27, 2014.
  2. Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of ammonium nitrite in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on July 19, 2019, is reproduced from a self-classification by the distributor .