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Static charge development character of some of the important explosive crystals have been predicted on the basis of their crystal class and symmetry. Among the important mechanism of charge development, the piezoelectric and pyroelectric characters have been considered. Ammonium trinitrate, ammonium nitrate, m-dinitro-benzene, trinitro-toluene, styphnic acid, p-lead styphnate, 4,4' dinitro-diphenyl, a-hexamethylenetetranitramine, nitroguanidine, picric acid, dimethylnitramine, a-Iead azide and p-lead azide are pyroelectric in nature, whereas pentaerythritol tetranitrate, picryl iodide, s-hexamethylenetetranitramine, tetranitromethane and trinitroethane are piezoelectric in nature.