404 DEFINITE NON-CABBURETTED EXPLOSIVE COMPOUNDS. 



If the nitrogen sulphide exploded in its own volume, we 

 should have 18702 kgm. 



More generally for the density of charge - we shall have 



8555 



n 



These are the theoretical figures. 



7. The following are the real figures which we have obtained 

 with the apparatus described (p. 21) : 



Density of 

 charge. Pressures. 



0-1 ............... 815kgm. 



0-2 ............... 1703 



0-3 ............... 2441 



which gives for a density equal to unity, 8150, 8515, and 8137 ; 

 mean, 8270 ; a value only slightly lower than the figure 8555, 

 deduced from theory. 



These pressures are nearly the same as those of mercury 

 fulminate. However, nitrogen sulphide is much less sudden in 

 its effects, owing, doubtless, to a certain expansion produced by 

 the successive transformations which the sulphur undergoes in 

 cooling change of gaseous density, liquefaction, and solidi- 

 fication. Hence it follows that the effects produced by the two 

 substances, regarded as detonators and playing the part of caps, 

 must be very dissimilar. 



3. NITROGEN CHLORIDE. 



1. Nitrogen chloride is considered to be one of the most 

 dangerous bodies to handle, owing to the facility with which it 

 explodes, by shock, friction, or contact with various bodies. 



2. Its equivalent = 120*5 grms. 



3. Composition 



Nitrogen ............ 116 



Chlorine ... ......... 884 



1000 



4. It is liquid, but may, however, be evaporated in a current 

 of air at ttie ordinary temperature. 



5. Its density is equal to T65. 



6. Nitrogen chloride is decomposed when heaterl even below 

 100, and is slowly destroyed at the ordinary temperature. It 

 explodes on contact with a great number of bodies. 



7. Nitrogen chloride explodes, resolving itself into its ele- 

 ments 



NC1 3 = N + C1 3 . 



It develops in this way 44*64 litres of permanent gases, or 

 370 litres per kilogramme. 



