NEP. BIVALENT CARBON, 155 



The Action of Sulphur on Ethylisocyaiiide. 



l.b c.cm. ethylisocyauide, 3.1 grams crystallized sulphur, and 15 

 c.crn. carboiibisulpliide were heated in a sealed tube at 110°-120° for 

 two hours. The reaction is complete, and the mustard oil formed is 

 driven over with steam, extracted with ether, and, after drying with 

 calcic; chloride, is fractionated. It boils constant at 131°, and is iden- 

 tical with ethyl-mustard oil first isolated by Hofmann.* 



0.2040 gram burnt with lead chromate gave 0.3063 gram COo and 



C.1016 gram H2O. 

 0.2544 gram substance gave 0.6771 gram BaSO^ (Carius). 



Theory for CoHsNCS. Found. 



The Action of Hydrogen Sulphide on Ethylisocyanide. 



Tliioformethylamide, CoHsNrCqrr- 10 c.cm. ethylisocyanide 



were dissolved in 200 c.cm. absolute alcohol, saturated at 0° with 

 hydrogen sulphide, and then heated for 4 hours in a sealed tube 

 at 100°. Tiie isonitrile smell was entirely gone, and, after distilling 

 off the alcohol, the brown oily residue was fractionated under reduced 

 pressure. The chief portion boiled at ]40°-150° at 40 mm. pressure, 

 and, on the second distillation, a yellow oil, smelling of sulphur, and 

 boiling at 125° at 14 mm. pressure was obtained. 



0.1996 gram substance, burnt with lead chromate, gave 0.2980 gram 



CO., and 0.1468 gram H,0. 

 0.2034 gram substance, gave 29.5 c.cm. No at 18° and 737 mm. 

 0.2885 gram substance gave 0.7529 gram BaSOi (Carius). 



Found. 



40.71 



8.17 



16.23 



35.84 



* Ber. d chem. Ges., I. 26. 



