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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 10

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the first two methods in quickness and directness and in accuracy no doubt.

4. Ethylamine method (4)

The method used is not given. Merely the results and a description of the reagent are published in the periodicals to which access was had. The reagent is presented as a heavy oily liquid nearly as caustic as potassium hydrate. 

[?] to similarly to some other method [?], the method of procedure is possibly as follows:
To the nearly neutral solution add an excess of ethylamine and mix thoroughly. Allow the precipitate to stand from 8 - 12 hours and then filter and wash first, with a solution of ethylamine (dilute) and the cold water. Dry, ignite and weigh the precipitate as the oxide. 
Precipitate the aluminium in the filtrate in the usual way and weigh it as the oxide. 
To[o] great an excess of precipitant should be avoided as this is liable to lead to error in the results, through reduction of ferric oxide by an excess of carbon. The [time]

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8 the first two methods in quickness and directness and in accuracy no doubt. 4. Ethylamine method (4) The method used is not given. Merely the results and a description of the reagent are published in the periodicals to which access was had. The reagent is presented as a heavy oily liquid nearly as caustic as potassium hydrate. [?] to similarly to some other method [?], the method of procedure is possibly as follows: To the nearly neutral solution add an excess of ethylamine and mix thoroughly. Allow the precipitate to stand from 8 - 12 hours and then filter and wash first, with a solution of ethylamine (dilute) and the cold water. Dry, ignite and weigh the precipitate as the oxide. Precipitate the aluminium in the filtrate in the usual way and weigh it as the oxide. To[o] great an excess of precipitant should be avoided as this is liable to lead to error in the results, through reduction of ferric oxide by an excess of carbon. The [time]