Nitroguanidine expls

CA 49, 10628 (1955) (Compns used in expl rivets Diasodinitrophenol 60 and Tetracene 40% Diazuuifiicrophenol 60, Tetracene 20, and Hexogen or Nitroguanidine 20%. Oxidizing agents such.as KCIO3 or KNO may be added)... 

Individual amines and their nitrated derivs used in expl, propellent and pyrotechnic compns are described separately under their own names, such as cyclonite, nitroguanidine, tetryl, etc... 

NAGu consists of wh monocl crysts(ftom w), apparent d 0.22 g/cc, mp 184°(decomp) expl ca 190°. When heated on a metallic spatula near a flame, each particle of NAGu expl as it is ignited by the flame. It may be ground in a mortar without producing an expln. One of the methods for its prepn is the interaction of nitroguanidine with hydrazine sulfate in ammonia. This and other methods are described in Refs 1,2,3,4a,6,... 

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... 

For unfoamed NC, results were again irrepro-ducible. Values of D ranged randomly from 1.9 to 2.5km/sec over a density range of 0.10—0.25 g/cm3 (Ref 5). For Nitroguanidine at 0.195 g/cm3 the measured D was 2.7km/sec (Ref 12) We now present a brief overview of recent publications on detonation velocity of specific expls or expl mixts... 

Uses. NC isused in single-base, smokeless propellants(NC non-expl ingredients) double -base, smokeless proplnts(NC NG) triple -base, smokeless proplnts(NC, NG nitroguanidine) and in dynamites. Commercially NC is used in pharmaceuticals, lacquers, and photographic products(Ref 80)(For more detailed info on NC s, see various types of NC listed in Table and discussed separately, next page)... 

Price et al (Refs 14i 14j) conclude from their data that 2,4-DNT should be characterized as an expl. They state that it is a group 1 expl that can be dead pressed with moderate ease that its infinite diam deton vel is approximated by Dj (mm/microsec) = 1.96+2.913(d) (see Fig 1) and that the detonatability and shock sensy of 3 and 10 micron 2,4-DNT are near those of prodn lots of high bulk d Nitroguanidine and DATB Rontsch (Ref 14q) claims that safety in production of expls contg DNT is greatly enhanced when the mixing operation is conducted as follows The components of the expl are placed... 

Scope. The three major military expls (TNT, RDX and HMX), the four most important military proplnt materials (Nitrocellulose, Nitroglycerin, Nitroguanidine and Dinitrotoluene) and two volatile and expl by-products (Tetranitro-methane from TNT manufg and Methyl nitrate from RDX/HMX manufg) are discussed here. 

Cool (or Cooled) Explosives. This name rs given to expls, such as Ammonium Nitrate, Guanidine Nitrate Nitroguanidine, which explode or bum with the production of gases... 

Nitroguanidine Nitrate, H2N.C NH.NH.N02-HN0g mwl67.09, OB to C02 +4.8% rhomb prisms, mp 147° (dec). May be prepd by dissolving NGu in hot, coned nitric acid and allowing to cool. Loses the nitric acid in contact with air. The salt is an expl detonable by impact, but not by heat... 

Ref 26, p 387) that the gases from the expIns of NGu (Nitroguanidine) were much less erosive than chose from other expls of comparable force, and considered this fact to be in harmony with his general conclusion chat the hotter expls are the more erosive. In his experiments the explns were made to take place in a steel bomb, 17.8cc capacity, equipped with a crusher gauge and with removable perforated, steel plug thru the perforation in which the hot gases from the expln were allowed to escape. They swept away, or eroded off, a certain amt of the metal. 

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