Radium azide

Ra(N3)2 was prepared only once by Ebler in 1910 as a white, crystalline salt, containing barium bromide it decomposed in vacuo between 180 and 250°C 

The salt was made from barium-radium bromide which was first enriched by fractional crystallization. Its aqueous solution was then precipitated with ammonium carbonate, and the radium carbonate dissolved in hydrazoic acid. The azide was crystallized at room temperature over sulfuric acid [134]. 

---

Alpha-Compounds, such as a-Mononitronaphtha-lene, a-Trinitrotoluene, etc are listed under the corresponding parent compels, such as Naphthalene, Toluene etc Alpha Particles as Initiators of Detonation, According to some investigators a-particles emitted by radium or other sources can, by irradiation, initiate the detonation of very sensitive expls, such as nitrogen iodide, but not of expls such as acerylides or azides. Nitrogen iodide can also be irradiated by fission products (See also Initiation of Explosives by Irradiation)... 

According to Ebler (Ref 5) Ba azide is not decompd by exposure to radium. Gyunter et al (Ref 15) also found that, unlike other azides, Ba azide is not decompd by X-rays of radium. X-rays of less than 0.7 A° also have no effect while soft X-rays produce a weak blue fluorescence. By using a Hadding tube,... 

Gamer and Moon [34] reported effects of radiation other than color changes the effects produced by the emission from radium on barium azide were dependent on temperature and led to the acceleration in the thermal decomposition. On the other hand the thermal decomposition of mercury ftilmi-nate was not affected in the same environment. 

---