207 



This solution contained 0,1886 grams of substance in 100 grams 

 of the liquid. 



It is remarkable that the laevogjrate strycJuwie-sah has a some- 

 what gi-eater molecular rotation than the corresponding potassiwn- 

 salt itself; the dextrogyrate strj/c/mine-saU lotates more strongly than 

 the free pot(t.ssiuin-sa,U. 



//Lo^alarfAotaliofv- 



UL ^d corses 

 21500° -^ 



5100 5260 S'ÜO 5610 5800 6020 6260 



J roA/e,. tmgliin/ 

 S530 ClnüströmyM/uts . 





§ 4. The different fractions were mixed with about six times their 

 weight of finely pulverized potassium-iodide, and then ground together 

 in a mortar, some cold water being added to the mixture. When 

 all potassium-iodide has just been dissolved, the yellow liquid is sharply 

 sucked off from the white precipitate, this last washed with a very 

 small quantity of cold water, and the yellow filtrate precipitated by 

 the addition of an excess of 95 7, alcohol. A yellow deposit is 

 formed, which is sucked off on the BucHNER-filter, washed with 

 alcohol, and recrystallised from water. On heating on the waterbath 

 the solution does not autoracenuse notably. By slow crystallisation 

 at roomtemperature, beautiful trigonally-shaped, orange crystals are 

 formed, which are dried between filterpaper. They can grow in 

 tiieir mother-liquid to considerable size. The optically-active components 

 are extremely soluble, more than the very soluble racemic compound ; 

 on this account the crystallisation of the active components was 

 executed in smaller and somewhat deeper crystallisation-dishes. 



