Ammonium nitrate, uses

As noted above (p. 36), the ammonium nitrate used for these explosives should be porous and should retain 7% of the oil without tendency to segregate on standing. A further requirement in modem practice is that the mixture, when blown into boreholes by compressed air, should break down to give a proportion of fine powder which increases both the density of loading and the sensitiveness of the mixture (see p. 141). 

Montgomery and Peterson [675] showed that ammonium nitrate used as a matrix modifier in seawater analysis to eliminate the interference of sodium chloride degrades the pyrolytic coating on graphite-furnace tubes. The initially enhanced sensitivities for copper, manganese, and iron are maintained for up to 15 atomisations. There is then a rapid decline to a constant lower sensitivity. The characteristics depend strongly on the particular lot of furnace tubes. To... 

Variations in the conditions used for the nitrolysis of hexamine have a profound effect on the nature and distribution of isolated products, including the ratio of RDX to HMX. It has been shown that lower reaction acidity and a reduction in the amount of ammonium nitrate used in the Bachmann process increases the amount of HMX formed at the expense of Bachmann and co-workers ° were able to tailor the conditions of hexamine nitrolysis to obtain an 82 % yield of a mixture containing 73 % HMX and 23 % RDX. Continued efforts to provide a method for the industrial synthesis of HMX led Castorina and co-workers to describe a procedure which produces a 90 % yield of a product containing 85 % HMX and 15 % RDX. This procedure conducts nitrolysis at a constant reaction temperature of 44 °C and treats hexamine, in the presence of a trace amount of paraformaldehyde, with a mixture of acetic acid, acetic anhydride, ammonium nitrate and nitric acid. Bratia and co-workers ° used a three stage aging process and a boron trifluoride catalyst to obtain a similar result. A procedure reported by Picard " uses formaldehyde as a catalyst and produces a 95 % yield of a product containing 90 % HMX and 10 % RDX. 

X-9. A pressed mixture of RDX AN (Ammonium Nitrate) used in Type 92 7-cm (70-mm) HE Projectile described in Ref 3, p 304, Fig 236 X-10. A pressed expl compn of RDX 90 paraffin 10%, coated with graphite and wrapped in A1 foil. It was used in Type 1 47-nun and 7-cm (75-mm) Armor-Piercing Projectiles described in Ref 3, pp 299 331... 

The ratio of cyclonite to octogen produced by method 5 was examined by Epstein and Winkler [72]. They found that in general reduction in the amount of ammonium nitrate used for the reaction reduces the yield of cyclonite and increases that of octogen. 

Miedziankit was one of the most widely used non-military explosives in Germany, Russia and Poland before, during and immediately after World War I, when there was a need to economize in the nitrates, including ammonium nitrate, used for military purposes. 

An important point is that for most uses concerned with chemical production, the acid must be concentrated above its azeotropic point to greater than 95%(wt). Conversely, the commercial manufacture of ammonium nitrate uses nitric acid below its azeotropic point in the range 50-65%(wt). If the stronger chemical grade is to be produced, additional process equipment appropriate to super-azeotropic distillation is required. 

Oxidimetrically with ceric ammonium nitrate using one of the three pos-... 

Powder the ammonium nitrate. Use any convenient method. Crushing it between two bricks works fairly well,... 

Once the mixture is cold, filter out the crystals of ammonium nitrate using doubled up coffee filters or a pillow case, depending upon how large the batch is. Squeeze the liquid out of the crystal mass, then put the crystal mass onto a plate. Spread it out to air dry. Obviously, this can t be done on a humid day. 

Freon E2 is -(CFCF20)2-CHFCF2, Tetrabutyl ammonium nitrate used GPC analysis. ... 

Synonyms PEG-2 cocomethyl ammonium nitrate Uses Surfactant for cosmetics, agric., textiles, protective coatings, inks, pigment dispersions, acid pickling baths, metalworking, electroplating, plastics... 

A Figure 13.5 An instant ice pack, containing ammonium nitrate, used to treat athletic injuries. To activate the pack, the container is kneaded, breaking the seal separating solid NH4NO3 from water. The heat of solution of NH4NO3 is positive, so the temperature of the solution decreases. 

A prill is a small, porous pellet of ammonium nitrate formed by a series of chemical and physical processes. Prilled ammonium nitrate used in blasdng operations is referred to as explosives grade, low density, or industrial grade ammonium nitrate. 

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