Ryan and Algar — 31ontanio Acid and its Derivatives. 105 



igroin melted at from 65^-67'' C, the remainder melted at 73'-74° C. The 

 latter gave on analysis ; — 



0-2252 grm. gave 6-8 cos. of nitrogen at ll-o° C. and 752 mm. pressure, 

 corresponding to nitrogen 3'54 per cent. 



CjgHasNOa requires nitrogen 3'09 per cent. 



C'eryl AlcoJiol from GJiviiese Wax. 



30 grms. of purified Chinese wax were dissolved in hot ligroin, and 

 250 CCS. of normal alcoholic potash added. The mixture was heated under a 

 reflux condenser for six hours. The excess of alkali was neutralised by passing 

 carbon dioxide through the solution, and the alcohol and ligroin finally removed 

 by distQlation. A solution of calcium chloride was added to the residue, and 

 the solid which separated was filtered and dried on a porous plate. When dry 

 it was extracted with hot acetone, the acetone evaporated oS, and the residue 

 finally extracted with petroleum ether. On evaporation of the petroleum 

 ether, eeryl alcohol was obtained. 



Ceryl Iodide, OjsHoJ. 



9'5 grms. of ceryl alcohol were heated to 100" C. with 2'6 grms. of red 

 phosphorus in a small round flask placed in an oil-bath ; 3'2 grammes of iodine 

 were slowly added and the heating was continued for about three hours. When 

 the reaction had ceased the residue was extracted with chloroform and filtered. 

 The filtrate was washed with dilute sodium carbonate solution, then with water, 

 and finally after drying over calcium chloride the chloroform was evaporated 

 off. The yield was nearly quantitative, and the ceryl iodide after recrystallisa- 

 tion from alcohol melted at 55-56" C. 



The percentage of halogen in the substance determined by the method of 



Stepanow was found to be : — 



I 25'22 



C.eHisT requires I 25-8 . 



E.I.A. PEOC, VOL. SXX., SECT. B. [P] 



