CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 

 CASE SCHOOL OF APPLIED SCIENCE. — No. XLV. 



ON THE COMPOSITION OF PETROLEUM* 

 By Charles F. Mabeuy. 



Keceivea May 24, 1904. 



L THE HYDROCARBONS IN OHIO TRENTON LIMESTONE 

 PETROLEUM WITH BOILING POINTS ABOVE 213°. 



By Charles F. Mabery and O. R. Palm. 



In a paper on the constituents of Pennsylvania, Ohio, and Canadian 

 petroleum with boiling points between 150° and 220°, published several 

 years ago,t it was shown that the distillate boiling at 212°-214° from 

 Ohio Trenton limestone petroleum consisted of hendecane, Cio 11.26, ^s '<^ 

 result of combustion, molecular weight determinations, and composition 

 of its chlorine derivatives. Study of the portions with higher boiling 

 points has since been continued for the purpose of ascertaining where 

 the series CuH2n+2 terminates and the series poorer in hydrogen appear. 



The higher specific gravity of Trenton limestone petroleum and prod- 

 ucts prepared from it is well known, but the cause has not yet been 

 ex[)laiued. Since the series Cnllo,,^^ I'^s l)een found to continue in Penn- 

 sylvania petroleum in the solid forms as high as their molecular weights 

 can be determined, and to be associated with series poorer in hydrogen 

 above 2G0° (50 mm.), it was evidently interesting to ascertain the com- 

 position of the higher hydrocarbons in Ohio oil. 



Results to appear later show that the series poorer in hydrogen form 

 the chief portions of Canadian petroleum; and since the Trenton lime- 

 stone oil stands in an intermediary position in its physical properties 

 and in the properties of its distillates between Pennsylvania and Cana- 



* The work described in the following p.ipers was carried on with aid granted 

 by the Academy from the C. M. Warren Fund for chemical research, 

 t These Proceedings, 32, 113 (1897). 



