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8322999 
Journal Article 
Synthesis of heat-resistant nitro-compounds and their extimation of explosion (III). The screening test of hazard evaluation for PYX 
Hosoya, F; Zhou, XX; Yoshizawa, F; Hatano, H; Tamura, M; Yoshida, T 
1991 
52 
4 
278-284 
Japanese 
PYX (2, 6-Bis(picrylamino)-3,5, 5-dinitropyridine) was synthesized through BPAP (2,6-bis- (picrylamino) pyridine) and their explosive properties were evaluated by the screening tests for energetic materials. These tests include (a) SC-DSC (sealed cell DSC), (b) micro heating test, (c) drop hammer test, (d) underwater small gap test, and (e) micro ignition test. Results obtained from the various tests for PYX. SC-DSC (heating rate 10°C/min) showed that decomposition temperature (extrapolated onset temperature, TDSC) of PYX was 375°C. Heat of decomposition (QDSC), in the case of sample mass ≤0.43 mg, was 1.08kcal/g, and sample mass ≥0.62 mg, decomposed violently, QDSC was 0.85 kcal/g. Underwater small gap test indicates that PYX is slightly less shock - sensitive than TNT. PYX is ignited with a small flame and burns brilliantly. PYX and BPAP have both similar ignitability.