40 THE ROYAL SOCIETY OF CANADA 



This latter compound was prepared in a purer condition from 

 the reaction product of hj^drogen peroxide on rubber, according to 

 details described later in this paper. 



The freshly precipitated C2.5H40O compound is easily soluble in 

 ether, petroleum ether, carbon tetrachloride, chloroform, benzol, 

 carbon bisulphide and insoluble in ethyl alcohol, methyl alcohol and 

 acetone. 



It has a dough-like consistency. It is apparently unacted on by 

 cold acids and bases and rapidly takes up oxygen from the air when 

 warmed and more slowly at room temperature, combining with one 

 atom of oxygen for every mol of C25H40O. 



Action of Hydrogen Peroxide- — Experimental Work by R. R. Parker 

 and R. R. McLaughlin. 



5 g. rubber dissolved in 125 c.c. carbon tetrachloride and 125 

 c.c. of a 3% hydrogen peroxide solution were placed in a glass stoppered 

 bottle and shaken for one week at room temperature. The whole was 

 allowed to stand twenty-four hours and then filtered when only a 

 small residue remained. The water and carbon tetrachloride in the 

 filtrate were separated and each evaporated at ordinary temperature 

 under suction. The water solution evaporated to a white sticky 

 material which, on attempting to dry to constant weight, was found 

 to absorb oxygen rapidly, when taken out of the vacuum vessel, for 

 weighing. This compound will be investigated later. 



The residue from the evaporation of the carbon tetrachloride 

 solution gave a transparent, bright yellow substance fairly hard, at 

 room temperature. This was found to be mostly soluble in ether 

 and leaving a residue insoluble in ether. The separation was made 

 by extracting with two portions of ether for eight hours each. The 

 combined extracts were evaporated at room temperature to about 

 25 c.c. and methyl alcohol added when a white gummy mass was 



