Ammonium nitrite

Ammonium nitrite
Names
IUPAC name
Ammonium nitrite
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.257 Edit this at Wikidata
EC Number
  • 236-598-7
UNII
  • InChI=1S/HNO2.H3N/c2-1-3;/h(H,2,3);1H3 checkY
    Key: CAMXVZOXBADHNJ-UHFFFAOYSA-N checkY
  • InChI=1/HNO2.H3N/c2-1-3;/h(H,2,3);1H3
    Key: CAMXVZOXBADHNJ-UHFFFAOYAU
  • [O-]N=O.[NH4+]
Properties
[NH4]NO2
Molar mass 64.044 g·mol−1
Appearance colorless or pale yellow crystals
Density 1.69 g/cm3
Melting point Decomposes
118.3 g / 100mL
Explosive data
Shock sensitivity Low
Friction sensitivity Low
Detonation velocity >1000 m/s
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Explosive
GHS labelling:
GHS01: ExplosiveGHS07: Exclamation mark
Danger
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 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazards (white): no code
2
0
3
Flash point Non-flammable
Non-flammable
Related compounds
Other anions
Ammonium nitrate
Other cations
Sodium nitrite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ammonium nitrite is a chemical compound with the chemical formula [NH4]NO2. It is the ammonium salt of nitrous acid. It is composed of ammonium cations [NH4]+ and nitrite anions NO2. It is not used in pure isolated form since it is highly unstable and decomposes into water and nitrogen, even at room temperature.


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