TNT heat of formation

Amm nitrite is an explosive sensitive to heat or shock. When a very small quantity of the dry salt is heated slowly on a spatula, the salt volatilizes and burns with a pale flame. When an appreciable quantity is heated above 60°, a violent expln takes place. Its coned aq soln decomps explosively when heated to 60—70° and if a similar soln is acidified with 1 drop of coned HC1, HNO,. or H2S04 a spontaneous decompn takes place even at room temp. Following props were detnd by Kast(Ref 3) heat of formation 65 keal/mol or 1016 cal/g, heat of expln 803 cal/g, temp of expln 2210°, tot vol of gas evolved on expln 1050 1/kg, vel of deton(V)(calcd) ca4000 m/sec at d ca 1, spec energy(f) 9865 kg/1, brisance (by Kast formula fdV ) 39500 vs 86000 for TNT. Heat of formation in Lange s Handbook is given as — 61.5, while in Hodgman s Handbook it is + 62,5, keal/mol... 

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