4:10 Thornton, Jr. — Separation of Titanium from Iron, etc. 



Table I. 

 The Separation of Titanium from Aluminum. 





TiO., 



A1 2 3 



TiO . 





H 2 S0 4 



Tartaric 



Volume 





taken 



taken 



found 



Error 



(1:1) 



acid 



of soln. 



No. 



grm. 



grm. 



grm. 



grm. 



cm 3 



grm. 



cm 3 



1 



0-1066 



0-1127 



0-1179 



+ 0-0113 



5 





200 



2 



0-1066 



0-1127 



0-1094 



+ 0-0028 



10 



._ 



200 



3 



0-05715 



0-1127 



0-0590 



+ 0-0018 



5 



1-2 



200 



4 



0-0572 



0-1127 



0-0577 



+ 0-0005 



10 



1-2 



200 



5 



0-0575 



0-1127 



0-0579 



+ 0-0004 



15 



1-2 



200 



6 



0-0573 



0-1127 



0-0575 



+ 0-0002 



20 



1-2 



200 



/ 



0-1067 



0-1127 



0-1072 



+ 0-0005 



20 



1-5 



400 



S 



0-106S 



0-1127 



0-1070 



+ 0-0002 



21) 



1-5 



400 



twice as great and the quantity of tartaric acid greater by half 

 a gramme also than were found necessary to insure a clean 

 separation of titanium from aluminum, and since the error on 

 titanium was one of gain, it appeared that there was little to be 

 profited bj carrying the series further. 









Table II. 











Ti0 2 



Ti0 2 





H 2 S0 4 



Tartaric 



Volume 





taken 



found 



Error 



(1:1) 



acid 



of soln. 



No. 



grm 



grm. 



grm. 



cm 3 



grm. 



cm 3 



9 



0-1428 



0-1429 



+ 0-0001 



5 



0-5 



200 



10 



0-1066 



0-1069 



+ 0-0003 



20 



1-5 



400 



11 



G-1064 



0-1067 



+ 0-0003 



30 



2-0 



400 



12 



0-1064 



0-1066 



+ 0-0002 



40 



2-0 



400 



Fresenius* has succeeded in obtaining a quantitative separa- 

 tion of iron from phosphoric • acid in a solution acid with 

 hydrochloric acid by means of the "cupferron" reagent. 

 Mindful of this, it occurred to the author that in a similar way 

 it might be possible to separate titanium from phosphoric acid. 

 The third series of experiments was, therefore, undertaken 

 with this object in view. Approximately known quantities 

 of phosphoric acid were added by weighing off dry portions of 

 Baker's analyzed disodium hydrogen phosphate. The condi- 

 tions of experimentation were like those described above for 

 the titanium aluminum separation. Table III contains the 



Table III. 

 The Separation of Titanium from Phosphoric Acid. 



No. 



Ti0 2 

 taken 

 grm. 



P 2 5 

 taken 

 grm. 



Ti0 2 

 found 

 grm. 



Error 

 grm. 



H0SO4 

 (1:1) 

 cm 3 



Tartaric 

 acid 

 grm. 



Volume 



of soln. 



cm 3 



13 

 14 



0-1064 

 0-1066 



0-0711 

 0-0710 



+ 0-1071 

 + 0-1067 



+ 0-0007 

 + 0-0001 



20 

 25 



1-5 

 1-5 



400 

 400 







*Zeitschr. anal. 



Chem., 1, 35, 



1911. 







