178 Thornton — Separation of Titanium from Iron. 



In the third series of experiments the solution containing 

 the titanium and iron was divided into two aliquot parts by 

 weight. In one part the titanium was determined by the 

 method already outlined. In the other part the iron was deter- 

 mined by the method of Gooch and Newton.* Table III con- 

 tains the results of two experiments. 



Table III. 



Ti0 2 Fe 2 O s Ti0 2 Fe 2 O s Error Error 



No. taken taken found found Ti 2 Fe 2 3 



grm. grm. grm. grin. grni. grm. 



S. 0-0716 0-1130 0-0V19 0-1130 +0'0003 0-0000 



9. 0-0717 0-1129 0-0716 0-1135 —1-0001 +0*0006 



From the work of JBellucci and Grassi,f Fresenius,;}: and the 

 author, it would seem that there should be no great difficulty 

 attending the separation of titanium from iron, aluminum, and 

 phosphoric acid, which are the substances with which titanium 

 is commonly associated in nature. Experiments are now in 

 progress by the writer for accomplishing this separation with 

 the aid of the " cupferron " reagent, and the results will appears 

 in a later issue of this journal. 



6 January, 1914. 



* This Journal, xxiii, 365, 1907. f Loc. cit. % Loc. cit. 



