Ammonium nitrate
CAS 6484-52-2H4N2O380.044 g/mol
Ammonium nitrate is the ammonium salt of nitric acid. It has a role as a fertilizer, an oxidising agent and an explosive. It is an inorganic molecular entity, an ammonium salt and an inorganic nitrate salt.
IUPAC: azanium nitrate
PubChem
Physical & Chemical Properties
| Melting Point | 337.8 °F (USCG, 1999) |
| Boiling Point | Decomposes at 200-260 °C |
| Density | 1.72 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | 213 g/100 g water at 25 °C |
| Vapor Pressure | 2.3 kPa at 20 °C in water solution; 1.5 kPa at 20 °C in saturated NH4NOs solution |
| pH | 0.1 M solution in water: 5.43 |
| Appearance | Ammonium nitrate is commercially available both as a colorless crystalline solid and processed into prills for specific applications. Soluble in water. Does not readily burn but will do so if contaminated with combustible material. Accelerates the burning of combustible material. Produces toxic oxides of nitrogen during combustion. Used to make fertilizers and explosives, and as a nutrient in producing antibiotics and yeast. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
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HS Code(s): 3102
Data: UN Comtrade
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