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CHAPTEK V. 



NITRIC ETHERS PROPERLY SO CALLED. 



i. ,;' ~ 



WE shall describe the following ethers regarded as types of 

 the nitric derivatives of monatomic and polyatomic alcohols: 



Nitric ether of ordinary alcohol, of which the author has 

 measured the heat of formation. 



Nitro-methylic ether, employed lately in dyeing. 



Dinitric ether of glycol, remarkable because its decomposition 

 corresponds to a total combustion without an excess of any 

 element. 



Trinitric ether of glycerin or nitroglycerin. 



Lastly, hexanitric ether of mannite, or nitromannite. 



It would be advisable to add to these, for the sake of com- 

 pleteness, the explosive mixtures formed by the association of 

 an organic compound with fuming nitric acid, or with nitric 

 peroxide, but these mixtures are elsewhere studied. 



2. NITRO-ETHYLIC ETHER: C 2 H 4 (HN0 3 ). 



1. Equivalent, 91. 



2. Composition 



C ......... ... rr 264 



H ............... = 55 



N ............... = 154 



O ............... = 527 



1000 



3. The body is liquid, boiling at 86. 



4. Density : 1132 at 0. 



5. This ether can be inflamed when a small quantity of the 

 liquid is operated upon. In this way nitrous vapour is formed 

 in abundance, but if the vapour of the ether be superheated 

 beforehand, it explodes violently. 



