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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 39

[page]37[/page]

nitric acid, so that there will be no loss by puffing. The source of the greenish color of the [?aluminum?] is not known, but the color did not seem to affect results. The method is quite accurate and quite direct. The time required is not very much and the method is a highly satisfactory one. The results obtained were as follows:--

[table of 3 columns]
[column 1]
[underlined]Iron.[/underlined]
Amount of Iron Aluminium [?alum?] taken
Weight of crucible empty
" " [ditto for Weight of crucible] + Fe[subscript]2[/subscript]O[subscript]5[/subscript] + ash
Ferric oxide.
Iron @ 70.01%
Amount in above
Percent found
[underlined]Aluminium[/underlined]
Potassium [?alum?] taken
Weight of crucible empty
" " [ditto for Weight of crucible] + Al[subscript]2[/subscript]O[subscript]3[/subscript] + ash.
Aluminum
Aluminium @ 52.94%
Amount in above
Percent found

[column 2]
I.
[?0.4246?0.4206?] [?gm?]
21.9156
[underlined]21.8390[/underlined]
0.0766
0.0536
0.[?1?4?0?]594
12.75%
[?]
0.7842
24.2892
[underlined]24.2016[/underlined]
0.1876
0.0463
0.047[?4?0?]
5.09%

[column 3]
I.
0.4438
[?21.5376?]
[underlined]21.4753[/underlined]
0.0843
0.0540
0.0627
13.29%
[?]
0.8658
25.4914
[underlined]25.3995[/underlined]
[?0.0719?0.0714?]
0.04[?8?1?]7
0.0493
5.62%

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[page]37[/page] nitric acid, so that there will be no loss by puffing. The source of the greenish color of the [?aluminum?] is not known, but the color did not seem to affect results. The method is quite accurate and quite direct. The time required is not very much and the method is a highly satisfactory one. The results obtained were as follows:-- [table of 3 columns] [column 1] [underlined]Iron.[/underlined] Amount of Iron Aluminium [?alum?] taken Weight of crucible empty " " [ditto for Weight of crucible] + Fe[subscript]2[/subscript]O[subscript]5[/subscript] + ash Ferric oxide. Iron @ 70.01% Amount in above Percent found [underlined]Aluminium[/underlined] Potassium [?alum?] taken Weight of crucible empty " " [ditto for Weight of crucible] + Al[subscript]2[/subscript]O[subscript]3[/subscript] + ash. Aluminum Aluminium @ 52.94% Amount in above Percent found [column 2] I. [?0.4246?0.4206?] [?gm?] 21.9156 [underlined]21.8390[/underlined] 0.0766 0.0536 0.[?1?4?0?]594 12.75% [?] 0.7842 24.2892 [underlined]24.2016[/underlined] 0.1876 0.0463 0.047[?4?0?] 5.09% [column 3] I. 0.4438 [?21.5376?] [underlined]21.4753[/underlined] 0.0843 0.0540 0.0627 13.29% [?] 0.8658 25.4914 [underlined]25.3995[/underlined] [?0.0719?0.0714?] 0.04[?8?1?]7 0.0493 5.62%