Impact and Friction Sensitivities of PETN: I. Sensitivities of the Pure and Wetted Material
Thomas M. Klapötke, Guillaume Lemarchand, Tobias Lenz, Moritz Mühlemann, Jörg Stierstorfer, Ralf Weber
Abstract
Abstract Pentaerythritol tetranitrate (PETN) is a sensitive and brisant explosive. PETN is transported wetted (25 %) with water to limit its impact and friction sensitivities. Literature on its sensitivities in function of its water content is controversial as the measurements were performed by several operators and laboratories rendering difficult to compare the values. Literature studies of mechanical sensitivity methods show the weaknesses and problems of mechanical measurements. Indeed, it is important to analyze a sample with standardized machines and by a single operator. During this work, pure PETN samples with water contents of 0 to 35 % were prepared and the water content was measured by Karl‐Fischer titration. The sensitivities were analyzed by the “BAM Fallhammer” and the “BAM Friction Apparatus”. The resulting trends were analyzed and discussed with regard to their meaning for handling safety. The study should help to better assess dangers when working with wet PETN (10–25 %) in order to avoid accidents.