Guncotton Trauzl test

According to an investigation by Medard (Ref 3)>mixts of Mg + H,0, Mg + MeOH or 2A1 + 3H40 are comparable in their power to guncotton but they are not able to propagate the deton unless a small quantity of a sensitizer (such as 7%+ of PETN) is incorporated. For instance, the mixt contg Al (powder) 30, HaO 30 and PETN 40% has a vel of deton of 5140 m/sec at d 1.55, coefficient d utilization pratique (CUP)(French Trauzl test value) 119(PA 100), and may be detonated by a Brisk a primer. It is practically insensitive to shock but its exudation, as detnd by the method of Burlot,... 

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