Pill of Chabacteks

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This formula was extracted automatically from a historical source and published directly for live editorial inspection. It may contain OCR, title, botanical-identity, ingredient, structure or safety errors. Do not use it as treatment, dosage or self-care guidance.

Source: Note-book of materia medica, pharmacology, and therapeutics/ by R.E. Scoresby-Jackson by Scoresby-Jackson, R. E. (Robert Edmund), 1835-1867; Macdonald, Angus, 1836-1886; Royal College of Physicians of Edinburgh (1871), narrative-offset-836709.

Ingredients or materials as extracted

• Chabacteks: This solution gives a copious light-blue precipitate with the yellow prussiate of potash,^ and a still more abundant one of a deeper colour with the red prussiate of potash.^ A small quantity boiled tvith an excess of caustic soda, and filtered, gives, vjhen exactly neutralised by nitric acid, a brick-red precipitate on the addition of solution of nitrate of silver. ^ Tests. — The solution in hydrochloric acid when d

Method as extracted

1. Mix according to the source passage: This solution gives a copious light-blue precipitate with the yellow prussiate of potash,^ and a still more abundant one of a deeper colour with the red prussiate of potash.^ A small quantity boiled tvith an excess of caustic soda, and filtered, gives, vjhen exactly neutralised by nitric acid, a brick-red precipitate on the addition of solution of nitrate of silver. ^ Tests. — The solution in hydrochloric acid when diluted gives no preci- pitate with chloride of barium..^ Ttventy grains dissolved in an excess of hydrochloric acid diluted loith water continue to give a blue precipitate with the red prussiate of potash, until at least 170 grain-measures of the volu- metric solution of bichromate of potash have been added.^ ^ At first, when it consists entirely of arseniate of the protoxide of iron, it is white, but even during the process of washing it is partly converted into arseniate of the peroxide of iron, and assumes a dirty green colour, ^ & 3 q^j^e solution gives, with the yellow prussiate of potash, a blue precipitate, which is more or less dark according to the proportion of persalt of iron present ; and with the red prussiate of potash a deep blue precipitate, which will appear more or less green-coloured when the iron is much oxidated. * The precipitate is arseniate of silver. ^Absence of sulphates. ^ Proving that it contains the proper per-centage of pro- toxide of iron. Dose. — From one-sixteenth to one-eighth of a grain, in pill.

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