Detonators are often made from tetryl and fulminates. Tetrytol is more sensitive than TNT and less sensitive than tetryl to impact. Tetrytol is a high explosive, comprising a mixture of tetryl and TNT. Ultimately, the OOW produced more than of smokeless powder and of TNT and tetryl. Other production plants included those for nitric acid, sulfuric acid and tetryl. Explosives commonly used in detonators include mercury fulminate, lead azide, lead styphnate, tetryl, and DDNP. Hence, cast tetrytol charges consist of solidified suspensions of crystalline tetryl in the solid tetryl-TNT-eutectic. The most toxic ordnance compounds, tetryl and 1,3,5-TNB, are also the most degradable. Unlike the other TNT ROF's, however, ROF Pembrey also made tetryl and ammonium nitrate. In addition, degradation products of tetryl appear as a shoulder on the 2,4,6-TNT peak. When tetryl is heated, it first melts, then decomposes and explodes. All samples expected to contain tetryl should not be exposed to temperatures above room temperature. Although tetryl is among the most toxic explosive compounds, it is very short-lived. Tetryl was used mainly during World Wars I and II and later conflicts.