Notes on the chemical reactions of brucia / by T. G. Wormley.

  • Wormley, Theodore George.
Date:
1859
Catalogue details

Licence: Public Domain Mark

Credit: Notes on the chemical reactions of brucia / by T. G. Wormley. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    12. Bromine in Bromohydric Acid. 1. TJ-0-tb, copious^ brown amorphous ppt., which soon changes to yellow, and will dissolve if sufficient reagent has not been added. Soluble in excess of acetic acid and potash. 2. ToVoth> much the same as 1. 3. Toiro-ofh* a greenish yellow amorphous ppt., which after a little time dissolves, and is not reprecipitated upon the addition of reagent. 4. 2o4ooth, greenish yellow, soon dissolves. 13. Iodine in Iodide of Potassium, 1. Tirolh* copious orange brown amorphous ppt., insoluble in acetic acid, but dissolves in several drops of potash solution, with the production of a dirty white ppt. 2. much the same as 1. 3. tofooB1’ brownish ppt., soluble in a drop of potash solution, without the production of a white ppt. 4. Tottooth, a greenish yellow ppt. 5. TooVoo^b a very distinct, dirty yellow cloudiness. It is best observed by placing a drop of the reagent by the side of the brucia solution, and allowing the drops to flow together. 6. 50 oV o the cloudiness is still perceptible. 14. Sulphuric Acid and Nitrate of Potash. 1. yloth, if the drop of brucia solution be evaporated to dryness in a steam bath, and the residue be touched with a small drop of concentrated sulphuric acid, it will immediately become rose red, and give a solution of much the same color; if now, a small crystal of nitrate of potash be added, the solution immediately changes to a fine orange red. 2. t<tonth, upon the application of sulphuric acid, the residue becomes a very fair rose red, but the solution is faint; the addition of the nitre gives a fine orange. 3. the acid gives a faint red, and the nitre, an orange, 1 which soon becomes yellow. ] 4. 2«rooth, the acid solution has a faint red color, which is best seen over white paper ; the addition of nitre changes it to yellow. I If a small crystal of nitre be moistened with sulphuric acid, and I then dragged over the deposit, the crystal becomes orange, and gives a solution of the same color. 5. 5 o oVif the nitre, moistened by the acid, be placed upon the deposit, the crystal immediately becomes quite red, and when pushed over the deposit, leaves a red track.