Abstract
Erythritol tetranitrate (ETN) is a melt-castable, solid explosive with significant performance, similar to the established nitrate ester, pentaerythritol tetranitrate (PETN). Recent advances in synthesis coupled with the ease of procurement of erythritol make ETN a readily made improvised explosive. This has lead researchers to further investigate both the physical and chemical properties of ETN. Current uses of ETN in its molten form include additive manufacturing and melt-casting of explosive parts, which could expand the capabilities of munitions manufacturing and research not previously available. Because of the increased use and development of ETN, we have recently begun studying its thermal stability in the molten state. Herein we report the thermal stability and impact sensitivity of ETN at elevated temperature, and discuss the decomposition characteristics of batches prepared with different methods and purity. Specifically, we will discuss thermal stability at varying temperatures using Automatic Pressure Tracking Adiabatic Calorimetry (APTAC), differential scanning calorimetry (DSC), along with drop-weight impact sensitivity in the molten state.
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