Ammonium nitrate

Ammonium nitrate
Names
	IUPAC name Ammonium nitrate
Identifiers
CAS Number	6484-52-2 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:63038;
ChEMBL	ChEMBL1500032;
ChemSpider	21511 ;
ECHA InfoCard	100.026.680
EC Number	229-347-8;
PubChem CID	22985;
RTECS number	BR9050000;
UNII	T8YA51M7Y6 ;
UN number	0222 – with > 0.2% combustible substances; 1942 – with ≤ 0.2% combustible substances; 2067 – fertilizers; 2426 – liquid
CompTox Dashboard (EPA)	DTXSID2029668 ;
	InChI InChI=1S/NO3.H3N/c2-1(3)4;/h;1H3/q-1;/p+1 Key: DVARTQFDIMZBAA-UHFFFAOYSA-O ; InChI=1/NO3.H3N/c2-1(3)4;/h;1H3/q-1;/p+1 Key: DVARTQFDIMZBAA-IKLDFBCSAH;
	SMILES [O-][N+]([O-])=O.[NH4+];
Properties
Chemical formula	NH4NO3
Molar mass	80.043 g/mol
Appearance	white crystalline solid
Density	1.725 g/cm3 (20 °C)
Melting point	169.6 °C (337.3 °F; 442.8 K)
Boiling point	approx. 210 °C (410 °F; 483 K) decomposes
Solubility in water	Endothermic; 118 g/100 ml (0 °C); 150 g/100 ml (10 °C); 192 g/100 ml (20 °C); 297 g/100 ml (40 °C); 410 g/100 ml (60 °C); 576 g/100 ml (80 °C); 1024 g/100 ml (100 °C)
Magnetic susceptibility (χ)	−33.6×10−6 cm3/mol
Structure
Crystal structure	orthorhombic
Explosive data
Shock sensitivity	very low
Friction sensitivity	very low
Detonation velocity	2500 m/s
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Explosive, Oxidizer
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H201, H271, H319
Precautionary statements	P220, P221, P264, P271, P280, P372
NFPA 704 (fire diamond)	1 0 3 OX
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	2085–5300 mg/kg (oral in rats, mice)
Related compounds
Other anions	Ammonium nitrite
Other cations	Sodium nitrate; Potassium nitrate; Hydroxylammonium nitrate
Related compounds	Ammonium perchlorate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Ammonium nitrate is a chemical compound with the formula NH₄NO₃. It is a white crystalline salt consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, although it does not form hydrates. It is predominantly used in agriculture as a high-nitrogen fertilizer.

Its other major use is as a component of explosive mixtures used in mining, quarrying, and civil construction. It is the major constituent of ANFO, a popular industrial explosive which accounts for 80% of explosives used in North America; similar formulations have been used in improvised explosive devices.

Many countries are phasing out its use in consumer applications due to concerns over its potential for misuse. Accidental ammonium nitrate explosions have killed thousands of people since the early 20th century. Global production was estimated at 21.6 million tonnes in 2017. By 2021, global production of ammonium nitrate was down to 16.7 million tonnes.

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