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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 16

14

2. Reduction by hydrogen, and  (8)
[alpha] determination volumetrically (8a)
[beta] by volatilisation with hydrochloric acid gas. (8b)

The [?] are both precipitated as hydrates, ignited and weighed together first. 
Then
(alpha), the precipitate is placed in a porcelain boat and ignited in a current of hydrogen with the weight is constant. The iron is dissolved out and weighed as the oxide, by precipitation with ammonia and [?] volumetrically, or, 
(beta) volatilised by a current of hydrochloric acid gas and determined by difference. 
Instead of determining the iron gravimatrically in (alpha) it would be more accurate to determine it volumetrically. There is some opportunity for loss of material by the currents of hydrogen or hydrochloric acid gas. The complete volatilisation of the iron will perhaps give some trouble as it always difficult to get rid of the last portion. As the opportunities for error are very few the

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14 2. Reduction by hydrogen, and (8) [alpha] determination volumetrically (8a) [beta] by volatilisation with hydrochloric acid gas. (8b) The [?] are both precipitated as hydrates, ignited and weighed together first. Then (alpha), the precipitate is placed in a porcelain boat and ignited in a current of hydrogen with the weight is constant. The iron is dissolved out and weighed as the oxide, by precipitation with ammonia and [?] volumetrically, or, (beta) volatilised by a current of hydrochloric acid gas and determined by difference. Instead of determining the iron gravimatrically in (alpha) it would be more accurate to determine it volumetrically. There is some opportunity for loss of material by the currents of hydrogen or hydrochloric acid gas. The complete volatilisation of the iron will perhaps give some trouble as it always difficult to get rid of the last portion. As the opportunities for error are very few the