216 MUNROE-HOWELL— PRODUCTS OF DETONATION OF TNT. 



tests were carried out using a 200 gram sample (M — 2630) of 



Grade I TNT, containing 18.34 per cent, nitrogen by the Orndorff 



method, which was obtained pressed to a density of 1.50, and the 



results obtained compared against a 200 gram sample of M — 2354, 



which was pressed to a density of 0.86. 



The results of the tests are as follows : 



.r, ^T M — 2354 



Test No. -^ Q^. 



P — 1840 



Density of cartridge 0.86. 



Weight of charge 200 grams. 



Temperature of gage before shot 27° C. 



Temperature of gage after shot 28° C. 



Barometer 726 mm. 



Observed gage pressure 13.79 kg. per sq. cm. 



Calculations. 



N in explosive, 200 X .1814 36.280 grams 



N in residual air 899 grams 



N in No. 8 electric detonator 158 grams 



Total N put in gage 37-337 grams 



N found in gases: Obs. pres. 13.79 kg. per sq. cm 10.150 mm. 



Barometer 726 mm. 



Abs. pres. in gage 10,876 mm. 



10876 X .01825 = 198.49 liters of gas. 



198.49 X .15 X 1.2542 = 37.342 grams N in gas. 



N put in gage 37-337 grams 



N found in gas 37-342 grams 



Difference +.C05 grams 



