EXAMINATION OF NAPHTHA FROxM RANGOON PETROL1I M. 211 



Its specific gravity was found to be 0823 at 0°. 



Heap at 187° = C n H n . Immediately above the rutylene In ip there was noticed a 

 well-defined tendency toward persistency at 180°-184°, and upon finally working these 

 fractions by themselves, it was found to be impossible to reduce them below a certain 

 size, little or nothing coming off at 180°, and there being no residue worth mentioning 



at 185°. The summit of this spurious (?) heap remained constant at 182°-1S4°. 

 The fraction 182°-183° boiled at 187.4° (corrected). 



On analysis, 0.234 grm. of it gave 0.289 grm. of water, and 0.736 grm. of carbonic 



acid. Or, 



Found 



Carbon, 85.77 

 Hydrogen, 13.G8 



Theory. 



C n 85.7 



Hn 14.3 



99.45 



100.0 



Its specific gravity was found to be 0.8356 at 



o 



Margarylene= Q& H22. Between 186° and 193° was a heap amounting to about 215 

 c. c. the summit of which stood out boldly at 188°-190°. 



The fraction 189°-190°, : which, by the way, was of precisely the same size of the 



188°-189°, boiled at 195.9° (corrected). 



On analysis, 0.1407 grm. of it gave 0.175 grm. water, and 0.4469 grm. carbonic acid. 

 Or, 



Found. 



Carbon, 8G.G4 



Hydrogen, 13.79 



Theory. 

 C22 85.7 

 H22 14.3 





100.43 



100.0 



A determination of vapor density resulted as follows 



Temperature of balance, 



- 



oil-bath, 



Excess of weiglit of balloon, 

 Capacity « 



Air remaining in " 



Height of barometer, 

 Density of vapor found, 



" « 4( 



theoretical (C22 H22), 



13.5° 

 249° 

 0.5697 

 231 c. c. 







759mm. a t — 2° 



5.478 

 5.325 



Its specific gravity was found to be 0.8398 at 0°- 



Laurylene = C^ H^ Between 200° and 214° there were three distinct summits 

 amounting respectively to about 125 c. c, 150 c. c, and 150 c. c. These summits were 

 well defined, particularly the lower one, the true boiling point of which was found to 

 be 208.3° (corrected) j the second summit boiled at 214.6° (corrected), and the third at 

 219.5° (corrected). 





