36 



Mr. Schorlemmer on the Hydrocarbons [June 20, 



The following data give the results of the analysis : — 

 0-3780 of substance gave 0*4505 of chloride of silver and 0-0023 of me- 

 tallic silver. 



Calculated for Cg H^g CI. Found. 

 29-46 per cent. CI. 297 per cent. CI. 



If iodine is present, the action of the chlorine is quite different. No 

 trace of a monochloride is formed ; the chief product consists of bichlori- 

 nated di-isopropyl, Cg H^^ ^ solid substance, besides a smaller quantity 

 of high boiling products, which are very rich in chlorine. From those the 

 solid chloride may be easily separated either by distillation with water, the 

 steam carrying the solid substance very easily over, or by cooHng the mix- 

 ture of the substitution-products and pressing the crystals which separate 

 between blotting-paper. This compound forms white crystals which smell 

 strongly of camphor, and, exposed to the air, soon volatilize at the com- 

 mon temperature ; heated in an open tube they sublime below their fusing- 

 point; in a closed tube they melt at about 160°. 



The analysis gave the following results : — 



(1) 0-2781 of substance gave 0-4795 of carbonic acid and 0-2030 of 

 water. 



(2) 0-1011 of substance gave 0-1846 of chloride of silver and 0*0015 

 of metallic silver. 



(3) 0*1756 of substance gave 0*3136 of chloride of silver and 0*0036 of 

 metallic silver. 



(4) 1680 of substance gave 0*3040 of chloride of silver and 0*0103 of 

 metallic silver. 



(5) 0*1415 of substance gave 0'2515 of chloride of silver and 0*097 of 

 metallic silver. 



Calculated. 



Found. 





. 72 



46-45 





. 12 



7*74 



CI, 



. 71 



45-81 





155 



100-00 



(1) (2) (3) (4) (5) 

 46*81 

 8*11 



45-7 44-9 46*6 46*2 



The higher chlorinated products boil under decomposition between 

 200° and 300°; the quantity which I obtained was too small to attempt 4o 

 separate them into definite products 



Di-isopropyl is slowly oxidized if it is heated with a concentrated solu- 

 tion of dichromate of potassium and sulphuric acid, a large quantity of 

 carbonic acid being evolved. In order to oxidize 10 grammes of the hy- 

 drocarbon it took a week ; the liquid was distilled off every day, and the 

 slightly acid distillate neutrahzed with carbonate of sodium, and thus a 

 sodium-salt was obtained which on recrystallization gave a crop of crystals, 

 whose habitus and reactions were found to coincide with acetate of sodium. 



