Hydrazines azides

Curtius [197] made hydrazine azide, (N2Hs)N3, in 1891 from hydrazoic acid and hydrazine, both of which he had discovered in the two preceding years. Today, the compound has found application in rocket fuel technology. 

N5H5 is a very hygroscopic, extremely soluble salt at 23°C, 100 g water dissolve 190 g. It also dissolves in methanol (6%) and ethanol (1%) it is insoluble in ether [311]. It is not sensitive to impact [311] but explodes on heat shock 

If hydrazoic acid is available, hydrazine azide is made by simply admixing the acid with an equimolar quantity of hydrazine, either by bubbling in the HN3 gas [52] or by using aqueous or ethereal HN3 solutions. In the latter case, the hydrazine azide is precipitated [197,311]. The preparation from sodium azide and hydrazine salt is more convenient. According to one source [313], 17 g hydrazine sulfate, 17 g sodium azide, and 4 g hydrazine are refluxed in 2 liters M-butanol at 117°C for 15 min. The liquid phase is then separated and cooled to 5°C when N5H5 is precipitated. 

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Hydrazine azide Hydrazine chlorate Hydrazine dicarbonic acid diazide Hydrazine perchlorate Hydrazine selenate Hydrogen cyanide, unstabilized Hydroxyl amine iodide Hyponitrous acid... 

Hydrazine Azide, Hydrazine Azoimide or Hydrazonium Azide. See list of Inorganic Azides in Vol 1, pp A536-537, and additional information below... 

Apin et al (Ref 4), in a calorimetric investigation of mixtures of Hydrazine Azide with several metallic elements found that an explosion resulted with the formation of NH3. The amount of NH3 depended on the explosion conditions. The limiting conditions were either N21VHN3 >2 AHj +2 AN2 or 1 2/3NH3 + 1 2/3N2... 

HN N.NH2 Tetrazene (tetrazone, or 2-tetrazene) H2N.N N.NH2 Isotetrazene (1-tetrazene, diazohydrazene, buzylene) HN N.NH.NH2 Ammonium Azide, NH4.N3 Hydrazine Azide,... 

Octazotriene (octazone) HN N.NH.N N.NH.N NH Many of the derivatives of the above compounds are explosive and they are described separately under corresponding names. Some of the compounds included in these tables (as for instance ammonium azide and hydrazine azide), do not possess the structural formula of real hydronitrogens but they are included for the sake of comparison, because their empirical formulas correspond to the type NnHn.2 Refs 1) L.F. Audrieth B.A. Ogg, TTie Chemistry of Hydrazine , J. Wiley, NY (1951), p 3-6 2) C.C. Clark, Hydrazine , Mathieson... 

Explosion, INitrogen Reaction in. Apia et al (Ref) investigated reactions of RDX, LA Hydrazine Azide produced on heating with powdered B, Be, Al, Mg Zr. It was found that heat of detonation was higher than when the expls were heated alone. This was because B, Be, Al, etc interacted on heating with nitrogen of the expls with formation of... 

The Conversion of Hydrazines to Azides Hydrazine-azide transformation... 

The expl props of these solvates have not been, studied. See discussion under Hydrazine Azide... 

Hydrazine Azide (formerly called Hydrazine Azoimide,Hydrazine Trinitride or Hydrazonium Azide) (called by Curtius Diammonium Azide, N,H ), NaH, HN, mw 75.08, N93.29% rhmb, hygr crysts mp 75.4(Ref 6) v sol in w, sol in hydrazine(190% at 23 ), methanol (6.1% at 23°) and in ale (1.2% at 23°C), not appreciably sol in chlf, carbon tetrachloride benz, carbon disulfide, ethyl acetate or diethyl ether (Ref 6). First prepd by Curtius in I89I (Ref 1) by neutralizing hydrazoic acid with hydrazine... 

Hydrazine Azide Monohydrazinate, NjHjN,-N2H4, raw 107.13, N9l>53% wh delq crysts, mp 66.4° v sol in w or in anhyd hydrazine. Prepd by treatment of a nearly satd soln of hydrazine azide in anhyd hydrazine with an equal vol of abs ale (Ref 6). This solvate was first obtained by Riegger in the lab of Cornell Univ (Ref 3) and has the same empirical formula as normal hydrazonitrous acid (3 -hydrazinopentazane) or as heptazane (Refs 5 6). In order to establish the identity of this monohydrazinate and establish whether higher solvates exist, the temp-concn diagram was detd for the system hydrazine azide-hydrazine. This investigation showed only one solvare formed, with eutectics located at 51° and -17°C (Ref 6) (Also see Refs 7 9X No expl props were mentioned... 

Hydrazine Azide Hemiammonate, (NjH8 mw 167.21, N92.16% wh delq crysts which exhibit extreme hygr on exposure to air but... 

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