Silver nitrite
Chemical compound
From Wikipedia, the free encyclopedia
Silver nitrite is an inorganic compound with the formula AgNO2.[2]
| |
| Names | |
|---|---|
| IUPAC name
Silver(I) nitrite | |
| Other names
Argentous nitrite | |
| Identifiers | |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.029.128 |
| EC Number |
|
PubChem CID |
|
| UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
| Properties | |
| AgNO2 | |
| Molar mass | 153.87 g/mol |
| Appearance | colorless to yellow crystals |
| Melting point | 140 °C (284 °F; 413 K) |
| 0.155 g/100 mL (0 °C) 0.275 g/100 mL (15 °C) 1.363 g/100 mL (60 °C) | |
| Solubility | insoluble in ethanol |
| −42.0·10−6 cm3/mol | |
| Hazards | |
| GHS labelling:[1] | |
   | |
| Warning | |
| H272, H302, H315, H319, H400 | |
| P210, P220, P221, P264, P270, P273, P280, P301+P312, P302+P352, P305+P351+P338, P321, P330, P332+P313, P337+P313, P362, P370+P378, P391, P501 | |
| NFPA 704 (fire diamond) | |
| Safety data sheet (SDS) | Sigma-Aldrich |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Production
Silver nitrite is produced from the reaction between silver nitrate and an alkali nitrite, such as sodium nitrite.[3] Silver nitrite is much less soluble in water than silver nitrate, and a solution of silver nitrate will readily precipitate silver nitrite upon addition of sodium nitrite:
- AgNO3 + NaNO2 → NaNO3 + AgNO2
Alternatively, it can be produced by the reaction between silver sulfate and barium nitrite.[citation needed]
Applications
Silver nitrite has many applications. Notable examples include:
- The production of aniline compounds.[citation needed]
- General oxidizing agent.[citation needed]
- Victor Meyer type nucleophilic substitution reactions with organobromides or organoiodides forming nitro compounds.[3]
- Nitroalkene synthesis with nitryl iodide generated in-situ from silver nitrite and elemental iodine.[4]
- 1,2,3-Benzothiadiazoles synthesis via skeletal editing (S,N-heteroarene ring transformation) of variously functionalized 2-halobenzothiazoles and benzothiazolinones[5]