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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 59

[page]57[/page]

[underlined]Electrolytic Separation[/underlined] [?191?].

I. From Organic Solution [superscript](9.[??])[/superscript]

     To the solution add enough ammonium oxalate so that no precipitate forms upon the addition of ammonia. Add oxalic acid in excess of ammonium oxalate. Pass a current, of 20-30 cc electrolytic gas per minute, through. Keep main [?illegible?] [?V?]-separation, [?when?then?] the iron is all deposited, wash the deposit with water and then absolute alcohol and heat to 100 degrees C, cool and weigh.
     If any aluminum has deposited the whole deposite of iron and [?alumisodium?] must be dissolved in [?nitric?] acid and the process repeated. The solution must be a [?little?] acid always, for if [?albalsine?] ferrous hydrate is precipitated. If the amount of ammonium carbonate found exceeds the amount of ammonium oxalate in solution aluminium will be deposited. [?Chlorides?] should not be used.
     The aluminium is determined in a suitable way.
     This method gives good result but requires considerable attention. The results with [?K-?Pre-?]chlorides [inserted]were[/inserted] [?four?]

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[page]57[/page] [underlined]Electrolytic Separation[/underlined] [?191?]. I. From Organic Solution [superscript](9.[??])[/superscript] To the solution add enough ammonium oxalate so that no precipitate forms upon the addition of ammonia. Add oxalic acid in excess of ammonium oxalate. Pass a current, of 20-30 cc electrolytic gas per minute, through. Keep main [?illegible?] [?V?]-separation, [?when?then?] the iron is all deposited, wash the deposit with water and then absolute alcohol and heat to 100 degrees C, cool and weigh. If any aluminum has deposited the whole deposite of iron and [?alumisodium?] must be dissolved in [?nitric?] acid and the process repeated. The solution must be a [?little?] acid always, for if [?albalsine?] ferrous hydrate is precipitated. If the amount of ammonium carbonate found exceeds the amount of ammonium oxalate in solution aluminium will be deposited. [?Chlorides?] should not be used. The aluminium is determined in a suitable way. This method gives good result but requires considerable attention. The results with [?K-?Pre-?]chlorides [inserted]were[/inserted] [?four?]