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The Analytical Separation of Iron and Aluminium by Henry Erdmann Radasch, 1897

The Analytical Separation of Iron and Aluminium by Henry Erdmann Radasch, 1897, Page 18

of about 10 - 12 [?] electrolytic gas is required. The method although quite accurate requires considerable attention. 

(b.) From phosphoric acid solutions

In this method sufficient phosphoric acid or sodium pyrophosphate is added to [blank space] precipitate both metals and ammonium carbonate added to dissolve it and to be in considerable excess. The current is passed through for from 8 - 12 hours and the solution tested for iron. If all is deposited the iron is washed with cold water and [?] alcohol and heated [37.00?]°C and cooled and weighed.
In the solution the aluminium is determined in the usual way. 
This method differs from the above in the attention required, for this, [none?], and for the above, considerable. It is also a more accurate method, especially when the amounts of iron and aluminium are about equal. The treatment of the

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of about 10 - 12 [?] electrolytic gas is required. The method although quite accurate requires considerable attention. (b.) From phosphoric acid solutions In this method sufficient phosphoric acid or sodium pyrophosphate is added to [blank space] precipitate both metals and ammonium carbonate added to dissolve it and to be in considerable excess. The current is passed through for from 8 - 12 hours and the solution tested for iron. If all is deposited the iron is washed with cold water and [?] alcohol and heated [37.00?]°C and cooled and weighed. In the solution the aluminium is determined in the usual way. This method differs from the above in the attention required, for this, [none?], and for the above, considerable. It is also a more accurate method, especially when the amounts of iron and aluminium are about equal. The treatment of the