Metal azide

Sodium azide is not as sensitive as lead azide or silver azide to friction or mechanical shock. Since sodium azide reacts with metal oxides to generate nitrogen gas, mixtures of sodium azide and metal oxides are used as pyrolants in gas generators. However, sodium azide reacts with copper and silver to form the corresponding azides, both of which are detonable pyrolants. 

2 Samer, S. F., Propellant Chemistry, Reinhold Publishing Co., New York, 1966. 

3 Japan Explosives Society, Energetic Materials Handbook, Kyoritsu Shuppan, Tokyo, 1999. 

4 Kosanke, K. L., and Kosanke, B. J., Pyrotechnic Ignition and Propagation A Review, Pyrotechnic Chemistry, Journal of Pyrotechnics, Inc., Whitewater, CO, 2004, Chapter 4. 

Typical examples of HCP are hydroxy-terminated polybutadiene (HTPB), car-boxy-terminated polybutadiene (CTPB), hydroxy-terminated polyether (HTPE), hydroxy-terminated polyester (HTPS), and hydroxy-terminated polyacetylene (HTPA). The physicochemical properties of various types of HCP are described in Section 4.2.3. 

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Initiators. Explosives such as mercury fulminate and certain metallic azides which are extremely sensitive to mechanical shock, and are accordingly used in small quantities in detonators to initiate the explosion of larger masses of less sensitive material. 

Numerous metal azides have been characterized (p. 417) and covalent derivatives of non-metals are also readily preparable by simple metathesis using either NaN3 or aqueous solutions of... 

The major use of inorganic azides exploits the explosive nature of heavy metal azides. Pb(N3)2 in particular is extensively used in detonators because of its reliability, especially in damp conditions it is prepared by metathesis between Pb(N03)2 and NaN3 in aqueous solution. 

J.N. May cock et al, Electronic Absorption Spectra of Metallic Azides, Perchlorates, Nitrates and their Related Explosive Properties , SpectrochimicaActa 23A (1957), 2849—53... 

Deb [1238] prepared thin films of inorganic azides (for optical studies) by reaction of an alkali metal azide with a heavy metal iodide, e.g. 

Lead azide, Pb(N,)2, is used as a detonator, i i) What volume of nitrogen at STP (1 atm, 0°Ci does 1.5, of It id azide produce when it decomposes into lead metal and nitrogen gas (b) Would 1.5 g of mercury(ll) azide, Hg(N which is also used as a detonator, produce a larger or smallei volume, given that its decomposition products i c elemental mercury and nitrogen gas (c) Metal azides in general are potent explosives. Why ... 

Alternatively, Rb and Cs are prepared in small but hydride-free quantities for specialist purposes by the gradual thermal decomposition (ca. 390°C) of the metal azides, MN, under high vacuum. The evolved nitrogen is inert to these heavier alkali metals. ... 

Beck and Fehlhammer (18, 19) describe reactions of several metal azide complexes, including Au(N3)4, with isocyanides which yielded a tetrakis-(tetrazolato)aurate(I) species. The formation of Au(PPh3)C(OCH3)=N-p-... 

See Other METAL AZIDE HALIDES, silver compounds... 

As a heavy metal azide, it is considerably endothermic (A// +279.5 kJ/mol, 1.86 kJ/g). While pine silver azide explodes at 340°C [1], the presence of impurities may cause explosion at 270° C. It is also impact-sensitive and explosions are usually violent [2], Its use as a detonator has been proposed. Application of an electric field to crystals of the azide will detonate them, at down to — 100°C [3], and it may be initiated by irradiation with electron pulses of nanosecond duration [4], See other catalytic impurity incidents, irradiation decomposition... 

See other endothermic compounds, metal azides, silver compounds 0024. Silver trisulfurpentanitridate... 

A very shock sensitive explosive, containing nearly 90 wt% of nitrogen. See other high-nitrogen compounds, non-metal azides... 

See related metal azides See other high-nitrogen compounds... 

See Other HIGH-NITROGEN COMPOUNDS, METAL AZIDES... 

See Carbon disulfide Metal azides See Bis(azidothiocarbonyl) disulfide See other ACYL AZIDES, ORGANIC ACIDS... 

Carbon disulfide and aqueous solutions of metal azides interact to produce metal azidodithioformates, most of which are explosive with varying degrees of power and sensitivity to shock or heat. 

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