Ammonium nitrate crystal density

For pure primary secondary explosives (except for border-line HE such as Ammonium Nitrate or Ammonium Perchlorate) dcr decreases as p0 increases until p0 approaches very close single crystal density when dcr may increase drastically. Thus if we limit ourselves to p0 < 0.9pcrySt, increases in p0 (according to Eq 8) should result in a greater sensitivity to impact. This is quite the opposite of what is found for shock initiation and will be examined more closely later on. At a fixed density, dcr increases as p. increases (see A B, p 90). This increase is fairly pronounced at small p (<0.2 mm) but levels off becomes almost asymptotic at large p (>0.4mm, except for cast TNT or TNT with 1% paraffin oil). Thus an increase in p, as expected, leads to a decrease... 

Another improvement consisted of preparing low density explosives (L.D. explosives) which contain ammonium nitrate in the form of bulky, porous crystals... 

Ammonium nitrate (NH4N03), a colorless crystalline solid, occurs in two forms (1) a-ammonium nitrate (tetragonal crystals, stable between -16°C and 32°C melting point 169.9°C density 1.66) and (2) (3-ammonium nitrate (rhombic or monoclinic crystals, stable between 32°C and 84°C with decomposition occurring above 210°C density 1.725). 

Ammonium perchlorate, NH4C104.—The perchlorate is formed by mixing solutions of barium perchlorate and ammonium sulphate, by the action of ammonium nitrate on sodium perchlorate,8 and by that of ammonium chloride on calcium or magnesium perchlorate.10 It forms rhombic,11 doubly refracting crystals,12 of density 1 88 at 25° C. Its solubility at 18° C. is 21 07 grams in 100 grams of water.18 It is de-... 

One of the crystal forms of NQ (Figure 3.31) is fiber- or featherlike this enables the crystals to mechanically interlock with large void spaces left between them. This property enables NQ to maintain fairly decent mechanical properties (it does not flake or fall apart) at low pressing densities. The ability to maintain uniform low density makes NQ a useful laboratory explosive where some experiments require controllable low detonation velocity and pressure. NQ is made by dehydration of guanidine nitrate, which in turn was made by the reaction of ammonium nitrate with dicyanodiamide. NQ is also used as a major ingredient in triple base gun propellants. 

Melhylaminc nitrate Teiramcthylammonium nitrate Guanidine nitrate Nitrates of aromatic amines Ammonium chlorate Ammonium perchlorate Crystal structure and physical properties Thermal decomposition and burning of A P Thermal decomposition of irradiated ammonium perchlorate Influence of pressure on burning of A P Density and critical diameter... 

Ammonium Nitrate. Ammonium nitrate became an important fertilizer after World War II when chemical plants that had been producing munitions were converted to the manufacture of fertilizer. It has a high concentration of nitrogen (35%) which is immediately available to the plant in the form of nitrate. However, ammonium nitrate is hygroscopic and prone to have large density fluctuations with crystal structure changes at 32°C. Ammonium nitrate is explosive if stored improperly. Proper storage methods and safety considerations must be employed. 

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