60 DERIVATIVES OF ETHYL ALCOHOL. 



potassa ; when treated with silver oxide, gives silver 

 iodide and 



Phosphethylium hydroxide, (C 2 IP) 4 P.OH. Crys 

 talline, very deliquescent, strong base ; takes up car 

 bonic anhydride from the air with avidity and forms 

 very deliquescent salts with acids. Is decomposed at 

 a high temperature into ethyl hydride and triethyl- 

 phosphine oxide. 



Triethylarsine, (C 2 H 5 ) 3 As, is formed, together 

 with the following compound, when sodium arsenide, 

 mixed with sand for the purpose of lessening the 

 violence of the reaction, is distilled with ethyl iodide 

 in a vessel filled with carbonic anhydride. By careful 

 distillation of the oil which passes over, in an atmos 

 phere of carbonic anhydride, triethylarsine distils 

 over first. Colorless liquid, strongly refracting, of 

 exceedingly disagreeable odor; specific gravity, 1.151 ; 

 begins to boil at 140 ; gives off fumes in contact with 

 the air, but takes fire only when heated. Combines 

 with oxygen, forming triethylarsine oxide (C 2 H 5 ) 3 AsO, 

 a colorless, oily liquid ; with sulphur forming triethyl 

 arsine sulphide (C 2 H 5 ) 3 AsS, a beautifully crystallizing 

 compound. It combines with ethyl iodide, forming 

 crystals of arsenethylium iodide (C 2 IP) 4 AsI, and this 

 gives with silver oxide arsenethylium hydroxide 

 (C 2 H 5 ) 4 As.OH, a white, alkaline, deliquescent mass. 



Arsendiethyl (Ethylcacodyl) SI^Ai } * Yel ~ 



lowish liquid, of a very disagreeable odor. Takes fire 

 spontaneously in contact with the air; boils at 190; 

 is heavier than water. Combines with oxygen, sul 

 phur, chlorine, etc., with evolution of heat. Conducts 

 itself perfectly analogously to the methyl compound 

 ( P . 40). 



Triethylstibine (Stibethyl), (C 2 IP) 3 Sb, is produced 

 when potassium antimonide is distilled with ethyl 

 iodide in a current of carbonic anhydride. Colorless, 



