PROCEEDINGS 



OF THE 



AMERICAN ACADEMY 



OF 



ARTS AND SCIENCES. 



VOL. XXX. 

 PAPERS READ BEFORE THE ACADEMY. 



Aid in the work described in this Paper was given by the Academy from the 

 C. M. Warren Fcnd for Chemical Research. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY 

 OF THE CASE SCHOOL OF APPLIED SCIENCE. 



XIX. — ON THE DETERMINATION OF SULPHUR IN 

 VOLATILE ORGANIC COMPOUNDS.* 



By Charles F. Mabery. 



Presented April 11, 1894 



The great quantity of products introduced into the petroleum 

 industry from the fields in Ohio and Canada yielding the sulplmr 

 oils has involved many sulphur determinations, and the necessity 

 of a rapid method capable of affording results of extreme accuracy, 

 especially in oils containing a small fraction of one per cent of 

 sulphur. Several of tlie older methods leave nothing to be desired 

 in point of accuracy, but they are not sufficiently expeditious for ser- 

 vice in manufacturing operations, or in investigations which depend 

 upon immediate information concerning the percentage of sulphur. 



The first attempt to determine sulphur in organic compounds by 

 combustion in oxygen was made by C. M. Warren, f the sulphuric acid 

 formed being absorbed within the combustion tube in plumbic peroxide. 



* This paper is one of the series on the composition of tlie sulpliur petroleums. 

 t These Proceedings, VL 472. 



VOL. XXX. (n. 8. XXII.) 1 



