Detonation rate nitrostarch

Le Roux (Ref 19) examined the expl properties of Nitrostarch of 13.52% N, At a density of 0.90g/cc, a charge of 30mm diam in a cardboard tube detonated at the rate of 497Qm/sec. The relative lead block expansion was 117% of Picric Acid... 

The explosive properties of mixtures with ammonium nitrate depend on the quantitative relationship between the oxidizing agent and the explosive or combustible substance. According to Parisot and Laffitte s [9, 47] investigations the explosive properties of mixtures of aromatic nitro compounds with ammonium nitrate vary with the change in composition of the system in an almost rectilinear manner. The graph in Fig. 69 shows how the rate of detonation depends on the composition of mixtures of tetryl or picric acid with ammonium nitrate. T. Urbanski et al. [48] also obtained a rectilinear relationship for nitrostarch mixtures with ammonium or sodium nitrate (Fig. 71, p. 265). 

The explosive properties of nitrostarch mixtures (containing 12.7% of nitrogen) with ammonium or sodium nitrates have been studied by T. Urbanski et al. [48]. Values for rate of detonation of mixtures with a density of 1.0 are given in Fig. 71. They conform to Laffitte s rule that the variation in rate of detonation with the composition of mixtures with ammonium nitrate is almost rectilinear. 

Fig. 71. The rate of detonation of nitrostarch mixtures with ammonium or sodium nitrates (according to T. Urbadski et al. [48]).

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