Manual of the medicinal preparations of iron : including their presentation, chemistry, physiological action, and therapeutic use / by Harry Napier Draper.

  • Draper, Harry Napier.
Date:
1864
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Licence: Public Domain Mark

Credit: Manual of the medicinal preparations of iron : including their presentation, chemistry, physiological action, and therapeutic use / by Harry Napier Draper. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    and the phosphate and acetate of soda in the remaining half. Mix the two solutions, and after carefully stirring, transfer the precipitate to a calico filter, and wash it with hot distilled water till the filtrate ceases to give a precipi- tate with chloride of barium. Finally, dry on porous bricks in a stove whose temperature does not exceed 100°. Preserve the dried salt in a stoppered bottle. Phosphate of iron, 3FeO, PO5, partially oxidated. Characters A slate-blue amorphous powder, insoluble in water, soluble in hydrochloric acid. The solution yields a precipitate with both the ferrocyanide and the ferrid- cyanide of potassium, that afforded by the latter being the more abundant, and when treated with tartaric acid and an excess of ammonia, and subsequently with the solution of ammonio-sulphate of magnesia, lets fall a crystalline precipitate. Test If it is digested in hydrochloric acid with a lamina of pure copper a dark deposit does not form on the metal. [Tlie acetate of soda here fulfils the same object as in the case of the arseniate of iron, as if the phosphate have the composition above assigned to it (see p. 65), an atom of sulphuric acid is liberated. The test is intended to guard against the presence of arsenic in the product.] FEREI SULPHAS SULPHATE OP IRON. Take of iron wire . • Four ounces. Sulphuric acid . . Four fluid ounces. Distilled water . . ■ One pint and a half. Pour the water on the iron, placed in a porcelain capsule,
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