Nitroguanidine properties

J. Savitt, "Some Properties and Uses of Nitroguanidine," paper no. 38 in Proceedings of Institutefor Chemie der Traub-und-Explosivestaffe, ICT, International Jahrsteig, Kadsuike, ERG, 1985. 

Medard (Ref 8) examined properties of HN mixtures with NH4NO3. Guanidine Nitrate,. Nitroguanidine, and Ethylenediamine Nitrate. 

Nitroguanidine has weakly basic properties and this accounts for its ability to form salts with concentrated acids, e.g. it forms a sulphate with concentrated sulphuric acid. Nitroguanidine is hydrolysed on heating with concentrated sulphuric acid evolving nitrous oxide and carbon dioxide, the former probably derived from hydrolysis of nitramine and the latter from hydrolysis of cyanamide. The latter also yields ammonia on decomposition. 

When heated with an aqueous solution of hydrazine (reaction (25)) nitroguanidine yields N-amino-N -nitroguanidine (II) (Philips and Williams [52]), a white, crystalline substance of marked explosive properties, m.p. 182°C ... 

Urbanski and Kapuscinski [57] found the following values for the explosive properties of nitroguanidine (Tables 5 and 6). 

The explosive properties of the potassium salt of nitrocyanamide first attracted McKay s [37] attention. He separated this potassium salt as a by-product from the preparation of aliphatic diazo compounds by the hydrolysis of N-alkyl-N-nitroso-N -nitroguanidines with an aqueous solution of sodium hydroxide at temperatures from 0°C to room temperature ... 

Austing et al (Ref 5) and Tullis and Austing (Ref 12) studied the detonation properties of very low density expls (0.25g/cm3uniformly dispersed in polyurethane foams to achieve their low densities. A few measurements were also made on unfoamed Nitroguanidine. Selected values of D for foamed PETN are shown in Table 5... 

Ammonium nitrate is also miscible with fused salts of nitric acid. The composition of the eutectics and the fusion temperatures of mixtures with sodium, potassium, and calcium nitrate are considered in future chapters (Vol. III). Data concerning the properties of mixtures with guanidine nitrate, nitroguanidine, ethylene diamine dinitrate, are also reported in Vol. III. 

Nitroguanidine and nitrosoguanidine both give a blue color with the diphenylamine reagent, and both give the tests described below, but the difference in the physical properties of the substances is such that there is no likelihood of confusing them. 

Nitroaminoguanidine is obtained by reacting -> nitroguanidine with hydrazine in aqueous solution. Nitroaminoguanidine has gained a certain attractiveness as a reduced carbon monoxide propellant because of its ready ignitability and its burn-up properties. 

Effect of nonaqueous solvents on acid-base properties of NGu) (Acidic in dimethyl-formamide, pyridine and acet basic in HAc and formic acid) 26) E. Ripper, Explosivst 17 (7), 145-51 (1969) Bt CA 72, 48454(1970) (a-and /3-Nitroguanidine) (Reinvestigation of both forms by IR UV, Nuclear Magnetic Resonance (NMR), Differential Thermal Analysis (DTA),... 

Very little can be added lo the description of the chemical properties of nitroguanidine described in Vol HI, p. 25. Some of the icactioas with nitro-guanidine leading to diniiramine were given on p. 361. 

Physical and chemical properties Explosive properties Nitroguanidine Reactions of nitroguanidine Specification according to Meyer Nitroaminoguanidine Nitrodicthanolaminc dinitratc Preparation... 

Because of no acidic or alkaline properties of 3 at the relevant pH [32], the pH of the aqueous system has no influence on its physicochemical properties. Clothianidin (3) is stable to hydrolysis in the pH range 4—9, but photolysis contributes significantly to its degradation in the environment, resulting in an elevated mineralization rate. Its degradation in water/sediment systems was observed to be significantly faster (factor 2-3) under anaerobic conditions than in aerobic conditions. The water solubility (0.327 g at 20 °C), vapor pressure (1.3 x 10 " Pa at 25 °C) and volatility of 3 are relatively low compared with other neonicotinoids that have a N-nitroguanidine pharmacophore (Tables 29.2.1.7 and 29.2.1.8). 

Nitroguanidine (CH4N4O2) was first prepared by Jousselin in 1877 and its properties investigated by Vieille in 1901. In World War I nitroguanidine was mixed with nitrocellulose and used as a flashless propellant. However, there were problems associated with this composition nitroguanidine attacked nitrocellulose during... 

Classification of Explosive Materials Table 2.13 Properties of nitroguanidine... 

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