Barium azide

Barium azide
Other names

barium dinitride
Identifiers
CAS number 18810-58-7 Y
PubChem 62728
ChemSpider 56472 Y
EC number 242-594-6
UN number 1687
Jmol-3D images Image 1
Properties
Molecular formula BaN6
Molar mass 221.37 g/mol
Appearance white crystalline solid
Odor odorless
Density 2.936 g/cm[1]
Melting point

126 °C
Boiling point

160°C(initial decomposition),[2] >217°C (deflagrates)
180°C(initial decomposition),[3] 225°C explosion
Solubility in water 11.5 g/100 mL (0°C)
14.98 g/100mL (15.7°C)
15.36 g/100mL (20°C)
22.73 g/100mL (52.1°C)
24.75 g/100mL (70°C)[4]
Solubility in alcohol 0.017 g/100 mL[5] (16°C)
Solubility in acetone , ether insoluble
Hazards
MSDS [1]
EU classification Highly toxic (T+)
Dangerous for the environment (N)
R-phrases R1, R23, R25, R36, R37, R38
LD50 mg/kg (oral, rats/mice)
 Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Barium azide Ba(N3)2 is an inorganic azide, is explosive, but less sensitive to mechanical shock than lead azide.

Uses

Can be used to make azides of magnesium (but its hydrolytic tendency frustrated efforts to isolate it), sodium, potassium, lithium, rubidium and zinc with their respective sulfates.[4]

Ba(N3)2 + Li2SO4 → 2 LiN3 + BaSO4

It can also be used in the preparation of extra pure nitrogen on heating :

Ba(N3)2 →Ba + 3N2

References

  1. ^ Fedoroff, Basil T.; Henry A. Aaronson, Earl F. Reese, Oliver E. Sheffield, George D. Clift (1960). Encyclopedia of Explosives and Related Items (Vol. 1). US Army Research and Development Command TACOM, ARDEC. 
  2. ^ Tiede, E. (1916). "Die Zersetzung der Alkali- und Erdalkali-azide im Hochvakuum zur Reindarstellung von Stickstoff". Ber. Dtsch. Chem. Ges. 49: p. 1742–1745. doi:10.1002/cber.19160490234. 
  3. ^ Audrieth, L. F. (1934). "Hydrazoic Acid and Its Inorganic Derivatives". Chem. Rev. 15: p. 169–224. doi:10.1021/cr60051a002. 
  4. ^ a b H. D. Fair and R. F. Walker (1977). Energetic Materials, Vol. 1. Physics and Chemistry of the Inorganic Azides.. New York and London: Plenum Press. doi:10.1002/prac.19770811124. 
  5. ^ Curtius, T.; Rissom, J. (1898). "Neue Untersuchungen über den Stickstoffwasserstoff N3H". J. Prakt. Chem. 58: p. 261–309. doi:10.1002/prac.18980580113.