

*2io [examination op naphtha from eangoon petroleum. 



that below 175° the quantities of liqiud had become so small that no definite results 

 could there be obtained. It is true that several elevations existed in this range of 

 raw 11 fractions, but to these we will refer hereafter. 



It should here bo mentioned that we had not been long at work upon this naphtha 

 from Kangoan petroleum, before the conviction was forced upon us that we had started 

 with an insufficient quantity of material. Application was therefore made in the 

 winter of 18G3-4 to Price's Patent Candle Company for a supply of the naphtha such 

 as was formerly prepared by them by distilling Rangoon petroleum upon the large 

 scale but to our regret we learned that the naphtha in question was no longer manu- 

 factured by the company, and that it was out of their power to furnish us with any of 

 it. In spite of this, and in fact while the negotiation was pending, we continued to 

 work upon our naphtha as before, being animated by a determination to learn how 

 much could be done with the process of fractional condensation when this is applied to 

 so small a quantity of volatile material as that at our disposal. 



Each of the isolated heaps of liquid was now worked by itself, over sodium, until 

 this metal was no longer acted upon, after which the most prominent fractions were 

 analyzed and otherwise examined, as is stated below. It should be noted that neither 

 the crude petroleum, nor the naphtha, nor the finished heaps were ever subjected to 

 the action of any chemicals other than this distillation from sodium which has just 

 been alluded to. 



Rutylene = C» H». The heap at 170°-176° amounted to about 120 c. c. Its sum- 

 mit was very clearly defined at 172°-173°, this fraction being twice as large as those 

 at 171°-172° or 174°-176°, and half as large again as that at 173°-174°. 



The fraction 172°-173° boiled at 175.8° (corrected). 



On analysis, 0.2036 grin, of it gave 0.255 grm. water, and 0.6421 grm. of carbonic 

 acid. Or, 



Found. 



Carbon, 8C.00 

 Hydrogen, 13.75 



Theory. 

 C20 85.7 

 H20 14.3 



9D.75 



100.00 



Determination of vapor density : — 



Temperature of balance, .12.5 



o 



u 



oil-bath, •••••.. 223 



o 



Excess of weight of balloon, % 0.5745 



Capacity « . 



Air remaining in " , 



Density of vapor found, 



242 c. c. 



« u 



theoretical (C20 II20), 







5.086 



4.841 



