86 M. C. Lea on Nitrate of Ethyl. 
Reaction of Ethyl bases with Dr. Knop's new hydrofluosilicie acid, 
2HFI+Si,Fl,. 
ibits different properties from ordinary hydrofluosilicie 
acid, 3HF1+2SiF1, and which he thinks may prove a valuable 
hydrate, phosphate and oxalate of ammonia, it gives no precip — 
of this reagent with some of the ethyl bases. I prepared some it 
of precipitant, even by standing and with the application of heat. 
Chlorhydric 
siderable portion undissolved. 
thylamine, when the acid was in excess did not give a pre 
cipitate, but when the ethylamine was in excess, the mixture by 
standing a while, coagulated to a jelly so stiff that the test glass 
could be inverted, and this with scarcely any loss of transparency: 
In an excess of the new acid, this jelly redissolved with the 
exception of a few flakes. 
Diethylamine exhibited almost the same reaction as ethyl- 
amine, except that the jelly was less transparent, and the solution 
in excess of the reagent less complete. The acid gives no pre 
cipitate with either the chlorhydrate of ethylamine or that of 
diethylamine. In this respect therefore these ethyl bases resem 
ble ammonia. 
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Art. X1.—On Nitrate of Ethyl; by M. Canny Lxa, Philadelphia. 
Action of Reducing Agents, Acetic Acid and Iron.—Acetic acid 
mixed with nitrate of ethyl was made to act on iron filings. 
On the application of a gentle heat a violent action set in, and 
most of the nitrate of ethyl was driven off undecomposed. The 
tube of a Liebig’s condenser was therefore attached so that the 
istillate might constantly flow back, and heat was applied until 
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