"NaN3" redirects here. Not to be confused with NaN.
Not to be confused with sodium nitride.
Sodium azide
Names
IUPAC name
Sodium azide
Other names
Sodium trinitride Smite Azium
Identifiers
CAS Number
26628-22-8Y
3D model (JSmol)
Interactive image
ChEBI
CHEBI:278547Y
ChEMBL
ChEMBL89295Y
ChemSpider
30958Y
ECHA InfoCard
100.043.487
EC Number
247-852-1
PubChem CID
33557
RTECS number
VY8050000
UNII
968JJ8C9DVY
UN number
1687
CompTox Dashboard (EPA)
DTXSID8020121
InChI
InChI=1S/N3.Na/c1-3-2;/q-1;+1Y
Key: PXIPVTKHYLBLMZ-UHFFFAOYSA-NY
InChI=1/N3.Na/c1-3-2;/q-1;+1
Key: PXIPVTKHYLBLMZ-UHFFFAOYAH
SMILES
[N-]=[N+]=[N-].[Na+]
Properties
Chemical formula
NaN3
Molar mass
65.0099 g/mol
Appearance
Colorless to white solid
Odor
Odorless
Density
1.846 g/cm3 (20 °C)
Melting point
275 °C (527 °F; 548 K) violent decomposition
Solubility in water
38.9 g/100 mL (0 °C) 40.8 g/100 mL (20 °C) 55.3 g/100 mL (100 °C)
Solubility
Very soluble in ammonia Slightly soluble in benzene Insoluble in diethyl ether, acetone, hexane, chloroform
Solubility in methanol
2.48 g/100 mL (25 °C)
Solubility in ethanol
0.22 g/100 mL (0 °C)
Acidity (pKa)
4.8
Structure
Crystal structure
Hexagonal, hR12[1]
Space group
R-3m, No. 166
Thermochemistry
Heat capacity (C)
76.6 J/mol·K
Std molar entropy (S⦵298)
70.5 J/mol·K
Std enthalpy of formation (ΔfH⦵298)
21.3 kJ/mol
Gibbs free energy (ΔfG⦵)
99.4 kJ/mol
Hazards
GHS labelling:
Pictograms
Signal word
Danger
Hazard statements
H300, H310, H410
Precautionary statements
P260, P280, P301+P310, P501 [2]
NFPA 704 (fire diamond)
4
1
3
Flash point
300 °C (572 °F; 573 K)
Lethal dose or concentration (LD, LC):
LD50 (median dose)
27 mg/kg (oral, rats/mice)[1]
NIOSH (US health exposure limits):
PEL (Permissible)
None[3]
REL (Recommended)
C 0.1 ppm (as HN3) [skin] C 0.3 mg/m3 (as NaN3) [skin][3]
IDLH (Immediate danger)
N.D.[3]
Safety data sheet (SDS)
ICSC 0950
Related compounds
Other anions
Sodium cyanide
Other cations
Potassium azide Ammonium azide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Sodium azide is an inorganic compound with the formula NaN3. This colorless salt is the gas-forming component in some car airbag systems. It is used for the preparation of other azide compounds. It is an ionic substance, is highly soluble in water, and is acutely poisonous.[5]
^ abStevens E. D.; Hope H. (1977). "A Study of the Electron-Density Distribution in Sodium Azide, NaN 3". Acta Crystallographica A. 33 (5): 723–729. doi:10.1107/S0567739477001855.
^"Sodium azide".
^ abcNIOSH Pocket Guide to Chemical Hazards. "#0560". National Institute for Occupational Safety and Health (NIOSH).
^"Material Safety Data Sheet" (PDF). Sciencelab.com. November 6, 2008. Archived from the original (PDF) on March 4, 2016. Retrieved October 26, 2015.
^Cite error: The named reference Ull was invoked but never defined (see the help page).
Sodiumazide is an inorganic compound with the formula NaN3. This colorless salt is the gas-forming component in some car airbag systems. It is used for...
NaN3 + NaOH + NH3 Many inorganic azides can be prepared directly or indirectly from sodiumazide. For example, lead azide, used in detonators, may be prepared...
compound. The azide source is most often sodiumazide (NaN3), although lithium azide (LiN3) has been demonstrated. Aliphatic alcohols give azides via a variant...
respectively. Like sodiumazide, potassium azide is very toxic. The threshold limit value of the related sodiumazide is 0.07 ppm. The toxicity of azides arise from...
an azide salt like sodiumazide. Normally solutions of sodiumazide in water contain trace quantities of hydrazoic acid in equilibrium with the azide salt...
nitrogen can be prepared by the thermal decomposition of barium azide or sodiumazide. 2 NaN3 → 2 Na + 3 N2 The applications of nitrogen compounds are...
nitro group and an azide group. It has been detected by infrared spectroscopy as a short-lived product of the reaction between sodiumazide and nitronium...
contain 130 grams of sodiumazide. Similar gas generators are used for fire suppression. Sodiumazide decomposes exothermically to sodium and nitrogen. 2 NaN...
It can be synthesised at below room temperature from the reaction of sodiumazide with either cyanogen chloride or cyanogen bromide, dissolved in a solvent...
Typically acyl azides are generated under conditions where they rearrange to the isocyanate. Alkyl or aryl acyl chlorides react with sodiumazide to give acyl...
of sodium are employed. Excess sodium is distilled from the crude product. A second method involves heating a mixture of sodiumazide and sodium nitrate:...
on surfaces. Bacteriostats commonly used in laboratory work include sodiumazide (which is acutely toxic) and thiomersal.[citation needed] Bacteriostatic...
Nitrosyl azide can be synthesized via the following reaction of sodiumazide and nitrosyl chloride at low temperatures: Below −50 °C, nitrosyl azide exists...
reaction) in organic chemistry. Metallic sodium is used mainly for the production of sodium borohydride, sodiumazide, indigo, and triphenylphosphine. A once-common...
azide is prepared by treating trifluoromethanesulfonic anhydride with sodiumazide, traditionally in dichloromethane. However, the use of dichloromethane...
this chemical. Bromine azide may be prepared by the reaction of sodiumazide with Br2. This reaction forms bromine azide and sodium bromide: NaN3 + Br2 →...
less sensitive to mechanical shock than lead azide. Barium azide may be prepared by reacting sodiumazide with a soluble barium salt. Care should be taken...
of these is the explosive breakdown reaction of sodiumazide [(NaN3)2] into nitrogen gas (N2) and sodium (Na). It is this process which powers the life-saving...
would inflate an airbag in under 30 milliseconds. A small explosion of sodiumazide was used instead of compressed air during inflation for the first time...
nitrogen when heated. It can be prepared by metathesis reaction between sodiumazide and lithium nitrate or lithium sulfate solutions: NaN3 + LiNO3 → LiN3...
(In the Curtius rearrangement, sodiumazide and an acyl chloride are combined to quantitatively generate the acyl azide intermediate, and the rest of the...
grossly contaminated specimens, which contains sodiumazide and crystal violet. Bohm's medium uses sodiumazide, kanamycin, phenol, and water blue. Shimoji's...
the azide-element bond has, with ionic character being far more stable than covalent character. Therefore, compounds such as silver or sodiumazide – which...
Ammonium azide is the chemical compound with the formula [NH4]N3, being the salt of ammonia and hydrazoic acid. Like other inorganic azides, this colourless...
Tosyl azide can be prepared by the reaction of tosyl chloride with sodiumazide in aqueous acetone. Tosyl azide is one of the most stable azide compounds...
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