Potassium azide

Potassium azide
Names
	IUPAC name Potassium azide
Identifiers
CAS Number	20762-60-1 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.039.997
PubChem CID	10290740;
UNII	J3LSB2C8SO ;
CompTox Dashboard (EPA)	DTXSID9040267 ;
	InChI InChI=1S/K.N3/c;1-3-2/q+1;-1 Key: TZLVRPLSVNESQC-UHFFFAOYSA-N;
	SMILES [N-]=[N+]=[N-].[K+];
Properties
Chemical formula	KN3
Molar mass	81.1184 g/mol
Appearance	Colorless crystals
Density	2.038 g/cm3;
Melting point	350 °C (662 °F; 623 K) (in vacuum)
Boiling point	decomposes
Solubility in water	41.4 g/100 mL (0 °C); 50.8 g/100 mL (20 °C); 105.7 g/100 mL (100 °C)
Solubility	soluble in ethanol; insoluble in ether
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-1.7 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Very Toxic, explosive if strongly heated
NFPA 704 (fire diamond)	4 3 3
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	27 mg/kg (oral, rat)
Related compounds
Other cations	Sodium azide, copper(II) azide, lead(II) azide, silver azide
	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

Potassium azide is the inorganic compound having the formula KN₃. It is a white, water-soluble salt. It is used as a reagent in the laboratory.

It has been found to act as a nitrification inhibitor in soil.

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