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
Catalogue details

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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    slightly acid and astringent to the taste; gives a blue precipitate with the ferrocyanide of potassium. When to a little of it placed in a test tube half its volume of pure sulphuric acid is added, and then a solution of sulphate of iron is poured on, the whole assumes a dark-brown colour. Tests—Specific gravity 1-107. One fluid drachm treated with an excess of solution of ammonia gives a precipitate, which, when washed, dried, and incinerated, weighs 2-6 grains. It gives no precipitate with the ferrid- cyanide of potassium. [This is without alteration the process of the Dublin College, and is open to all the objections pointed out in the article on this preparation.] FERRI PEROXIDUM—PEROXIDE OF IRON. Take of hydrated peroxide of iron, four ounces. Place the peroxide of iron in a stove or oven until it becomes dry to the touch, and then expose it to a heat of 212° until it ceases to lose weight. Lastly, reduce it to a line powder and preserve it in a bottle. Fe^Og, HO Characters A powder of a dark-brown colour, and destitute of taste; dissolves completely, though slowly, with the aid of heat in hydrochloric acid diluted with half its volume of water, forming a solution which gives a copious blue precipitate with the ferrocyanide of potassium. Tests It dissolves completely in hydrochloric acid, and the solution gives no precipitate with chloride of barium, or with the ferridcyanide of potassium. Preparation Emplastrum ferri.
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