azoimide

The solution is then acidified and distilled, when azoimide passes over.

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Noelting and E. Grandmougin (_Berichte_, 1891, 24, p. 2546) obtained azoimide from dinitraniline, C_6H_3 (NO_2) _2·NH_2, by diazotization and conversion of the diazo compound into the perbromide,

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_Chloroazoimide_, Cl·N_3, the chloride corresponding to azoimide, was obtained by F. Raschig (_Ber. _, 1908, 41, p. 4194) as a highly explosive colourless gas on acidifying a mixture of sodium azide and hypochlorite with acetic or boric acid.

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_Ammonium azoimide_, N_3·NH_4, may be prepared by boiling diazohippuramide with alcoholic ammonia, until no more ammonia escapes, the following reaction taking place:

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After the greater portion of the alcohol has distilled off, the solution is acidified with sulphuric acid and the azoimide distilled over.

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