10 



As the quantity of "brominated oil on hand 

 was not sufficient to attempt a purification by 

 distilling, it was transferred to a "boiling point 

 apparatus and the sulphuric acid "bath slowly 

 heated. The oil gradually darkened, indicating 

 a separation of "bromine. At 50 it was red 

 (the color of dilute ferric sulphocyanate) 

 and at 100 almost "black. At 157 o fumes of 

 bromine and hydrobromic acid came off co- 

 piously and the oil distilled into the reser- 

 voir above the air chamber. After cooling the 

 liquid remained black, slightly more viscous 

 and with a changed odor, but not one suggesting 

 carbonization. 



Addition of Iodine About Ice of oil was 

 dissolved in an equal volume of absolute alcohol 

 and a saturated solution of iodine in alcohol 

 added drop by drop with shaking. No visible dis- 

 coloration followed. The mixture was allowed to 

 stand for two days and the excess aloohl was 

 then driven off by immersing the bottle in water 

 which was brought to a boil. The liquid which 

 remained had a color not quite as dark as ordin- 

 ary iodine tincture and a peculiar odor resem- 

 bling that of anethol. Owing to lack of ti.,-.e 

 work was discontinued at this point. _Ji attempt 



