a 
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Chemistry and Physics. . 269 
at common temperatures decomposes it, forming various hydrocar- 
bons. Chlorid of zine gives with the alcohol, butene CeHs, hydruret 
of butyl CsH10, and liquid earburets, By the action of potassium on 
iodid of butyl the author obtained butyl CsHoe, (or in Gerhardt’s view, 
see ) ; it is a colorless oily liquid. The chlorid, iodid and bromid 
of buty! were found by the usual processes ; they are liquid and resem- 
ble corresponding compounds of amyl. he iodid of buty! readily re- 
acts with the salts of silver, and in this manner many of the ethers of 
this radical may be obtained. Wurtz did not succeed in preparing the 
oxyd of butyl in a perfectly pure state ; it appears to be a liquid having 
an agreeable odor and boiling between 05°. T 
Special notice in this pluce.. B distilling sulpho-butylate of potash 
with cyanate of potash, dissolving the distillate in alcohol and then dis- 
tilling this mixture with caustic potash, the author obtained butylamin. 
s8rig 
In a pure state this ammonia N 2? His liquid and boils at 69°-70° ; 
Solutions must not be too dilute. If these conditions be observed a very 
Accurate result is obtained.—Ann. der Chemie und Pharmacie, xci, 237. 
{It will be observed that this method fails entirely precisely in the case 
40 which it is most desirable to have a very accurate and expeditious 
od for determining copper, namely, in the assay of copper ores. 
—W. G.] 
the action of iodid of amyl upon an alloy of sodium and tin.— 
Grong has studied and described an extensive series of new radicals 
‘ ee tin and the elements of amyl, and obtained by the action of 
amyl upon an alloy of tin and sodium. As however, these 
