5- picrylamino-l ,2.3.4-tetrazole

Similarly, 5-picrylamino-l,2,3,4-tetrazole (PAT) (116) " " and 5,5 -styphnylamino-1,2,3,4-tetrazole (SAT) (117) " have been synthesized by condensing picryl chloride and styphnyl chloride with 5-amino-l,2,3,4-tetrazole in methanol respectively. A comparison of thermal and explosive properties of newly synthesized PAT (calculated VOD 8126 m/s) and SAT (calculated VOD 8602 m/s) reveals that PAT is more thermally stable than SAT but more sensitive to impact and friction. " ... 

J. P. Agrawal, V. K. Bapat and R. N. Surve, Synthesis, Characterization and Evaluation of Explosive Properties of 5-Picrylamino-l,2,3,4-Tetrazole , 2nd High Energy Materials Conference and Exhibits, HT, Madras, 8-10 December, 1998, 403. 

Agrawal and co-workers reported the synthesis of two tetrazole-based explosives, namely, 5-picrylamino-l,2,3,4-tetrazole " (PAT) (149) and 5,5 -styphnylamino-l,2,3,4-tetrazole (SAT) (150) from the reaction of 5-amino-1,2,3,4-tetrazole (148) with picryl chloride and styphnyl chloride respectively. These explosives have been studied for their thermal and explosive properties. The thermal stability of SAT (exotherm peak at 123 °C) is lower than PAT (exotherm peak at 185 °C), which is possibly attributed to the decreased electron-withdrawing power of the picryl group by being attached to two tetrazole units. PAT and SAT have calculated VODs of 8126 m/s and 8602 m/s respectively. ... 

Agrawal, J.P., Bapat, V.K., and Surve, R.N. (1998) Synthesis, characterization and evaluation of explosive properties of 5-picrylamino-l,2,3,4-tetrazole. Proc. 2nd High Energy Materials Conference and Exhibit, IIT, Madras, 8-10 Dec, pp. 403-405. 

R.R., Mehilal, and Makashir, P.S. (2000) A comparative study of thermal and explosive behaviour of 5-picrylamino-1,2,3,4-tetrazole (PAT) and 5,5 -styphnylamino-l,2,3,4-tetrazole (SAT). Proc. Inti. Workshop on Unsteady Combustion and Interior Ballistics, St. Petersburg, Russia, vol. 1, June 25-30, pp. 199-205. 

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