DIY History | Transcribe | Scholarship at Iowa | 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 54

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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 54

[page]52[/page]
[underlined]Separation[/underlined]
     To the nearly neutral solution of iron and chromium salts add a little of the neutral potassium oleate solution and whip vigorously. When this is worked up add some more and continue until the solution is colorless. By this time all the iron and [?illegible?] have been converted into the oleates. Transfer the precipitates to a filter and [?vas?] with hot [?water?] until the potassium chloride is all removed. Dry the precipitate over calcium chloride for a little while and then wash it with hot petroleum. The iron oleate being soluble in [?chi-latter?], passes through into the filter flask. The pure white [?illegible?] oleate remains behind. [?illegible words?] [?iron?] oleate directly and [?illegible?] as [?illegible?].
     To determine the iron in the filtrate, evaporate it to dryness on a weighed platinum dish and [?illegible?] and [?illegible?] the residue and weigh as zinc oxide.
     The phthalein used was a solvent of the [?chromium?aluminium?] oleate also and so would not answer. It was found that the [?aluminium?chromium?] oleate was unsoluble in [?gasoline?]

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[page]52[/page] [underlined]Separation[/underlined] To the nearly neutral solution of iron and chromium salts add a little of the neutral potassium oleate solution and whip vigorously. When this is worked up add some more and continue until the solution is colorless. By this time all the iron and [?illegible?] have been converted into the oleates. Transfer the precipitates to a filter and [?vas?] with hot [?water?] until the potassium chloride is all removed. Dry the precipitate over calcium chloride for a little while and then wash it with hot petroleum. The iron oleate being soluble in [?chi-latter?], passes through into the filter flask. The pure white [?illegible?] oleate remains behind. [?illegible words?] [?iron?] oleate directly and [?illegible?] as [?illegible?]. To determine the iron in the filtrate, evaporate it to dryness on a weighed platinum dish and [?illegible?] and [?illegible?] the residue and weigh as zinc oxide. The phthalein used was a solvent of the [?chromium?aluminium?] oleate also and so would not answer. It was found that the [?aluminium?chromium?] oleate was unsoluble in [?gasoline?]