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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 32

[page]30[/page]

[underlined]Nitross-[?beta?]-Nephthal Separation
Preparation of Nitross-[?beta?]-Naphthol[/underlined][superscript](11)[/superscript]

     The first method of separation used was that by means of nitrous-[?beta?]-naphthol. The latter was prepared as follows:--
     About 50 grams of [?beta?]-naphthol were dissolved in 300cc of 95% alcohol and [?boiled?] upon a water bath. To this were added, 50cc of a neutral solution of zinc chloride free from iron. The latter was precipitated by zinc oxide. To the boiling solution was added, another solution of concentrated sodium nitrite, containing about 25 grams of the latter. The addition of the sodium nitrite solution caused [inserted]such[/inserted] a lively effervescence that the solution formed [?illegible?] and hot fire. When this was extinguished and the lamp put out, the remainder of the sodium nitrite was added and then the boiling continued to complete the reaction. The precipitate was filtered and washed with water first by mistake. The solution was poured off of the precipitate adn alcohol used until the filtrate was pale red. When the precipitate was

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[page]30[/page] [underlined]Nitross-[?beta?]-Nephthal Separation Preparation of Nitross-[?beta?]-Naphthol[/underlined][superscript](11)[/superscript] The first method of separation used was that by means of nitrous-[?beta?]-naphthol. The latter was prepared as follows:-- About 50 grams of [?beta?]-naphthol were dissolved in 300cc of 95% alcohol and [?boiled?] upon a water bath. To this were added, 50cc of a neutral solution of zinc chloride free from iron. The latter was precipitated by zinc oxide. To the boiling solution was added, another solution of concentrated sodium nitrite, containing about 25 grams of the latter. The addition of the sodium nitrite solution caused [inserted]such[/inserted] a lively effervescence that the solution formed [?illegible?] and hot fire. When this was extinguished and the lamp put out, the remainder of the sodium nitrite was added and then the boiling continued to complete the reaction. The precipitate was filtered and washed with water first by mistake. The solution was poured off of the precipitate adn alcohol used until the filtrate was pale red. When the precipitate was