Saltpetre, KNO3 (5)
I believe the answer is:
nitre
(Other definitions for nitre that I've seen before include "explosive component" , "A part of fertilizer" , "found in a slow match?" , "explosive producer?" , "Otherwise saltpetre" .)
I believe the answer is:
nitre
(Other definitions for nitre that I've seen before include "explosive component" , "A part of fertilizer" , "found in a slow match?" , "explosive producer?" , "Otherwise saltpetre" .)