DERIVATIVES OF ETHYL ALCOHOL. 55 



Ethyl sulphide, when heated, combines readily with 

 ethyl iodide, forming triethyl sulphiodide (C 2 H 5 ) 3 SI, a 

 crystalline substance, easily soluble in water and alco- 

 hol, which, when treated with silver oxide and water, 

 yields triethyl sulphhydroxide (C 2 H 5 ) 3 S.OH. Indistinct 

 deliquescent crystals. Strong base, combines with 

 acids forming well characterized, easily soluble salts. 



Ethyl bisulphide, (C 2 H 5 ) 2 S 2 , is produced when ethyl 

 chloride is conducted into an alcoholic solution of potas- 

 sium bisulphide, and by the action of iodine on sodium 

 mercaptide. Liquid, boiling at 151. When shaken 

 with dilute nitric acid, it yields ethyl disulphoxide 

 (C 2 H 5 )S 2 2 , a liquid, which cannot be distilled without 

 decomposition. 



The corresponding selenium and tellurium com- 

 pounds are produced in a similar manner to the sul- 

 phur compounds, potassium selenide or telluride being 

 employed instead of the sulphide. 



Selenmercaptan, C 2 H 6 Se. Colorless, thin liquid, 

 with an insupportable odor ; with mercury oxide it 

 also yields a mercaptide. Ethyl ^selenide (C 2 H 5 ) 2 Se. 

 Pale yellow liquid, with an exceedingly repulsive odor, 

 heavier than water. Is oxidized by nitric acid, the 

 action being accompanied by an evolution of nitrogen 

 binoxide ; from the resulting solution hydrochloric 

 acid precipitates ethyl chloroselenide (C 2 H 5 ) 2 SeCl 2 , a pale 

 yellow, heavy oil. 



Ethyl telluride, (C 2 H 5 ) 2 Te. Eeddish-yellow liquid, 

 heavier than water, of insupportable odor. Is dissolved 

 by nitric acid as tellurethyloxide nitrate. From this 

 solution hydrochloric acid precipitates an oily, color- 

 less substance, tellurethyl chloride (C 2 H 5 ) 2 TeCl 2 ; hydriodic 

 acid, an orange-yellow, powdery substance, tellurethyl 

 iodide (C 2 H 5 ) 2 TeI 2 . Aqueous ammonia decomposes the 

 chloride, forming ammonium chloride and an oxichlo- 

 ride (C 2 H 5 ) 2 TeCl 2 -f (C 2 H 5 ) 2 TeO, which crystallizes in 

 colorless and inodorous prisms. The iodide conducts 

 itself in a similar manner. 



