27-1 Dr. W. Ramsay on Picoline and its Derivatives. 



I. 03915 grm. of substance gave 0*3696 grin. C0 2 and 

 0-1006 grm. H, 0. 



II. 0-2991 grm. of substance gave 0*2782 grm. of C0 2 and 

 0-0762 grm. of H 2 0. 



III. 0-2900 grm. of substance gave 0-2801 grm. of C0 2 and 

 0-0798 grm. of H 2 0. 



IV. 0-3489 grm. of substance gave, on combustion with 

 soda-lime and ignition of the platinum-salt, 0*1382 grm. of Pt. 



V. 0-2676 grm. of substance gave 0*5327 grm. of AgCL 



VI. 0*3230 grm. of substance gave 0*6410 grin, of AgCl. 



I. II. 



III. 



IV. 



V. VI. 



C . 25-74 25-36 



26-34 







H . 2-85 2-83 



3-05 



i 





N 





5-63 





CI 









49-25 49*0! 



Mean. 



Calculated for 



Calculated for 



C 6 H 



^lgN.HCl. 



C e H e (OCl) 3 N.HC: 



C . 25*81 





30-90 



25-44 



H . 2-91 





2-14 



2-47 



N . 5-63 





6-01 



4*94 



CI . 49-17 





60-94 



50-17 



83-52 





99-99 





0, by difference 16*48 







16-96 



100-00 







99-98 



Another chlorine-estimation gave 50*57 per cent, of chlorine ; 

 a different preparation was used. Taking the number of carbon 

 atoms as 6, the numbers found stand to each other in the ratio 

 of C 6 Hg-! Nx-! Cl 3 . 85 2 . 87 . As the substance smells like hypo- 

 chlorous acid, and as it is evidently produced by the action of 

 water on the crystals or on the oil, which are the first products 

 of the action of chlorine on picoline, it may possibly contain the 

 group (OC1), and might have the formula C 6 H 6 (0C1) 3 N . HOI. 

 A gas is evolved in small quantity when the oil is brought into 

 contact with water, which appears to be chlorine. The num- 

 bers do not agree at all well ; and I should have investigated 

 the compound more minutely had it not been for the great 

 waste of picoline in its preparation. From 0*5 grm. of pico- 

 line 0*041 grm. of the white compound was obtained ; and the 

 filtrate, which contained chiefly picoline hydrochloride, yielded 

 on evaporation and precipitation with platinum chloride 

 0*7582 grm. of impure picoline platinochloride, correspond- 

 ing to 0*3290 grm. of the hydrochloride. I believe that a 

 more complicated action takes place when water is added to 

 the product of the action of chlorine on picoline than a mere 

 precipitation of the white powder. The white powder is 



