Ammonium nitrite represented by the chemical formula NH4NO2 or H4N2O2  that bears the IUPAC name azanium nitrite  is a compound containing nitrogen, hydrogen and oxygen that is soluble in water . It is an ammonium salt and an ionic compound .
Ammonium Nitrite Identification
|CAS Number||13446-48-5 |
|PubChem CID||26004 |
|ChemSpider ID||24223 |
|EC Number||236-598-7 |
How to Make it
Ammonium nitrite can be prepared by a reaction between silver nitrite and ammonium chloride that also produces silver chloride .
2AgNO2 + NH4Cl = NH4NO2 + 2AgCl
Nitrous acid also reacts with ammonium hydroxide to produce ammonium nitrite and water .
HNO2 + NH4OH = NH4NO2 + H2O
Properties and Characteristics of Ammonium Nitrite
|Molar mass/molecular weight||64.044 g/mol |
|Color/appearance||White-yellowish crystals |
|Melting point/freezing point||Decomposes (explodes at 60°C-70°C) |
|Boiling point||N/A |
|Density||1.69 g cm-3 |
|State of matter at room temperature (normal phase)||Solid |
|Solubility in water||64.3 g/100g (at 19.15oC) |
|pH||>7 (basic) |
If the concentrated solution of the compound is heated too strongly, it explodes decomposing into nitrogen gas and water [5, 6].
NH4NO2 = N2 + 2H2O
Ammonium Nitrite Uses
- As a microbiocide, rodenticide and agricultural pesticide .
- For the synthesis of nitrogen gas and ammonium cobalt-nitrite .
- In making explosives .
Is It Dangerous
The compound is highly toxic to humans and aquatic animals. It can cause an explosion hazard. Heating it can produce toxic fumes of ammonia and nitrogen oxides [4, 6]
Ammonium Nitrite (NH4NO2) Cost
The unstable compound is extremely difficult to find in its pure form and almost none of the major chemical suppliers sell it for commercial purposes .
- Ammonium Nitrite – Pubchem.ncbi.nlm.nih.gov
- Ammonium Nitrite – Chemspider.com
- Ammonium Nitrite Formula – Byjus.com
- Ammonium Nitrite – Lookchem.com
- Ammonium Nitrite, 20% Soln – Chemicalbook.com
- Ammonium Nitrite – http://www.sciencemadness.org/smwiki/index.php/Ammonium_nitrite
- Nitrous acid react with ammonium hydroxide – Chemiday.com