Tetrytol

Tetrytol is a high explosive, comprising a mixture of tetryl and TNT. Typically, the proportion of ingredients is 65%, 70%, 75% or 80% tetryl to 35%, 30%, 25% or 20% TNT. Tetryl and TNT do form a eutectic with a setting point of 67.5 °C, which consists of 55% tetryl and 45% TNT. Hence, cast tetrytol charges consist of solidified suspensions of crystalline tetryl in the solid tetryl-TNT-eutectic. Tetrytol is more sensitive than TNT and less sensitive than tetryl to impact. The detonation velocity of unconfined cast cylindrical charges of tetrytol is between 7290 and 7410 m/s with an average of 7350 m/s for tetrytol 75/25 and 7340 m/s for tetrytol 65/35. For comparison, cylindrical charges of cast pure TNT of similar dimensions are reported to detonate with a velocity of between 6680 and 6990 m/s.

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