MABEBY. SULPHUR PETROLEUMS. 33 



again treated with sodium uutil there was no further action. The 

 boiling point was not appreciably changed by this treatment, although 

 it was evident that some constituent had been removed capable of 

 forming a nitro-derivative soluble in alkalies. The residual oil was 

 shown by vapor density determinations and analysis to have the 

 composition required for uouane. The boiling point of nouane is 

 150.8° (Warren). 



I. 0.1799 gram of the oil gave 0.3987 gram CO2, and 0.1749 gram 



11. 0.1751 gram of the oil gave 0.5424 gram CO.,, and 0.2488 gram 

 HoO. 



Calculated Found, 



for CgHjg. I. II. 



C 84.37 84.96 84.48 



H 15.63 15.16 15.88 



Analysis I. was made of the oil after treatment with alcoholic mer- 

 curic chloride, but before heating with the acid mixture ; analysis 11. 

 of the oil after treating with a mixture of nitric and sulphuric acids 

 and boiling with sodium. 



The determinations of vapor density of this product in the apparatus 

 of Victor Meyer, with a bath of ethyl benzoatCg gave the following 

 results: I. 4.73; II. 4.74; required for C9H0O, 4.43. 



This fraction therefore contains nonane, although it consists to a 

 very considerable extent of another hydrocarbon, which seems, by the 

 ready formation of nitro compounds and its behavior toward alkaline 

 solvents, to be a member of the series C„H2„. All the fractions of 

 Ohio oil that we have examined below 150° are similarly contami- 

 nated by, or rather contain in appreciable quantities, hydrocarbons 

 which form nitro products with the characteristic qnalities of the un- 

 saturated or parafRne nitro compounds. 



Thus far Ohio petroleum has proved to contain members of the 

 series C„Ho„ + 2' corresponding to those which have been identified in 

 Pennsylvania oil, but in much smaller quantities. They form one 

 fifth of crude Pennsylvania oil and less than one tenth of Ohio oil. 



In identifying these constituents it has not seemed necessary to 

 accumulate data further than would appear essential in showing the 

 similarity of our products to those whose composition has been so 

 carefully demonstrated in Pennsylvania petroleum. And while this 

 portion of our labor may be of less interest than the study of the 

 constituents with higher boiling points, it has seemed of sufficient 

 VOL. XXXI. (n. s. xxiii.) 3 



