Metallic hydrazine nitrates

Table 13.8 Form and color of metallic hydrazine nitrates [16]...

With bivalent metals, hydrazine nitrate forms coordination compounds that may be represented by the general formula Me[(N2H4)2 3l(N03)2 [6]. The two most often mentioned substances are nickel hydrazine nitrate (NHN) and cobalt hydrazine nitrate (CoNH). 

The description of crystal type and color of several metallic hydrazine nitrates are summarized in Table 13.8. The density of NHN is 2.07 g cm . Nickel and cobalt hydrazine nitrate are practically insoluble in common organic solvents (e.g., ethanol, acetone) and sparingly soluble in water (0.47 g 1 at 30 °C, 2.31 g 1 at 70 °C). NHN bums upon the action of 96 % sulfiuic acid, but weak acid makes it decompose more gently CoHN explodes in contact with concentrated sulfuric acid. NHN mildly reacts with a 10 % solution of sodium hydroxide and this can be used for producing a chemical decomposition. NHN is stable on exposure to sunlight and it hardly reacts at aU with common metals. Cobalt hydrazine nitrate is unstable and decomposes slowly, even in the presence of traces of moisture, changing in color from brown to greenish [16, 17]. 

Impact sensitivity and ignition temperature for several metallic hydrazine nitrates are summarized in Table 13.9. 

Table 13.9 Metallic hydrazine nitrates ignition temperatures and sensitivity to impact and friction...

Metallic hydrazine nitrates is prepared by the reaction of the relevant nitrate with hydrazine in water or alcohol [16, 21], The product is isolated from the reaction mixture as a precipitate [6]. The preparation of NHN according to the procedure of Zhu [21] gives 95 % yield and leads to fine powder shown in Fig 13.2. 

Patil, K.C., Nesamani, C., and Pai Verneker, V.R. (1982) Synthesis and characterization of metal hydrazine nitrate, azide and perchlorate complexes. Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 12, 383-395. 

Hydrazine Nitrate Complexes. Salts of bivalent metals (Ni, Co, Zn, Cd and Mn) of complex hydrazine nitrates may be represented by the following formulas [M(N 2H4 )2 ] (N03 )2, or by [M(N2 H, )3 ] (N03 )2. In these complexes, called nitrohydrazinates, each N Ii, group plays the same role as two NH3 groups in the corresponding ammonium complexes... 

CA 62, 395(1965) [A castable expl compn provided by curing a mixture contg 50—80% powdered hydrazine nitrate, 13—40% binder (such as a polyester of mol wt 500—5000 derived from polyhydric ales and polybasic acids), and 3—10% curing agent (such as a diglycidyl ether of bisphenol A or.F), powd metals (such as Mg, Al, Ti, etc) 5—15%, and minor propns... 

Hydrazine nitrate, NHj-NHj-NO], exists in two crystalline forms of different melting temparatures the stable form melts at 70.7°C, while the labile melts at 62.1°C. In contact with water hydrazine nitrate dissolves with great ease to form a strongly acid solution. In the fused state it reacts rapidly with several metals, such as zinc and copper. Hodgkinson [45] explains this behaviour as due to the formation of azides under these conditions. In the presence of nitrites, hydrazine nitrate forms salts of hydrazoic acid. 

Salts of bivalent metals (Ni, Co, Zn, Cd and Mn) form complexes with hydrazine nitrate of a genera formula... 

ACETATO MERCURIOSO (Spanish) (21908-53-2) A strong oxidizer. Violent reaction with reducing agents, acetyl nitrate, diboron tetrafluoride, disulfur dichloride, combustible materials, fuels, hydrazine hydrate, hydrogen peroxide, hydrogen trisulfide, hypophospho-rous acid, methanethiol, phospham. sodium-potassium alloy, sulfur, sulfur trioxide. Incompatible with alcohols, alkali metals, ammonium nitrate, diboron tetrafluoride, hydrazinium nitrate, hydrogen sulfide, nitroalkanes, rubidium acetylide, selenium oxychloride. Forms heat-, friction-, or shock-sensitive explosives with anilinium perchlorate, chlorine, phosphorus,. sulfur, magnesium, potassium, sodium-potassium alloy. May increase the explosive or thermal sensitivity of nitromethane, nitroethane, 1-nitropropane and other lower nitroalkanes, silver azide, hydrazinium perchlorate. Slowly decomposes on exposure to air. 

BICHROMATE of POTASH (7778-50-9). Noncombustible, but many chemical reactions can cause fire and explosions. A powerful oxidizer. Violent reaction with many substances, including combustible materials, reducing agents, organic materials, finely divided metals, ammonium nitrate, ammonium perchlorate, fluorine, hydrazine, hydrazinium nitrate, hydrox-ylamine, iron powder, nitric acid, potassium iodide, sodium borohydride, sodium bromide, sodium tetraborate and its decahydrate, tungsten and zirconium dusts. Mixture with sulfuric acid forms chromic acid. Incompatible with ethylene glycol, iron, tungsten. 

The specific gravity of liquid explosives must be greater than 1.2, so that the treatment after failure detonation could be facilely finished and the water solubility is also good. The specific gravities of liquid explosives with main oxidizers of urea perchlorate, hydrazine nitrate, and hydrazine perchlorate are listed in Table 1.4. Metal perchlorates are also main components for liquid explosives [31, 32]. 

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