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 13

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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 13

11

[?]lamp. 

The iron is determined in the [filtrate?] in the usual way, after evaporating of the ether and the greater part of the excess of hydrochloric acid. 

The separation of the aluminium is complete as none could be found in the iron after the first few trials of the method. The errors are in the [evolution?] of the hydrochloric acid gas. If too rapid the solution is liable to bubble over the ends of the vessel, if a very small one is used. There should be exercise in heating the precipitate as [?] in the evolution of the water and hydrochloric acid of the aluminium there is great opportunity for the loss of material by the escaping vapors. This is overcome, about entirely, by the use of the layer of mercuric oxide. 

This method is very rapid and direct and also very accurate. It has the qualities that the authors claim for it and will no doubt be used to a great extent. It has small opportunity for errors if all precautions are observed,

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11 [?]lamp. The iron is determined in the [filtrate?] in the usual way, after evaporating of the ether and the greater part of the excess of hydrochloric acid. The separation of the aluminium is complete as none could be found in the iron after the first few trials of the method. The errors are in the [evolution?] of the hydrochloric acid gas. If too rapid the solution is liable to bubble over the ends of the vessel, if a very small one is used. There should be exercise in heating the precipitate as [?] in the evolution of the water and hydrochloric acid of the aluminium there is great opportunity for the loss of material by the escaping vapors. This is overcome, about entirely, by the use of the layer of mercuric oxide. This method is very rapid and direct and also very accurate. It has the qualities that the authors claim for it and will no doubt be used to a great extent. It has small opportunity for errors if all precautions are observed,