Copy 1

The chemical pocket-book, or memoranda chemica; arranged in a compendium of chemistry ... with Bergman's table of single elective attractions / as improved by Dr. G. Pearson.

  • Parkinson, James, 1755-1824
Date:
1800
Catalogue details

Licence: Public Domain Mark

Credit: The chemical pocket-book, or memoranda chemica; arranged in a compendium of chemistry ... with Bergman's table of single elective attractions / as improved by Dr. G. Pearson. Source: Wellcome Collection.

    235/274 (page 199)
    mixture of Phosphoric Acid with the Zoonate of Lime, he obtains the pure Zoonic Acid. The Zoonic Acid smells like meat which has been roasted ; a process, in which indeed it isformed. Ir ‘is of an austere taste, reddens turnsole, and efferves- ces with alkaline carbonates. It has a stronger attrac. tion to the oxides of mercury and lead, respectively, than the acetous and nitric acids. The ZOONATE oF Por-Ast calcined does’ not form a Prussiate’ of 14 iron, witha solution‘of that metal, 9 Annales de Chimie. xxvr. Tromsdorf thinks this Acid of Berthollet; which he imagined to partake of both an animal . nd vege- table nature, is analogous to the Sebacic Acid. XI. THE FORMIC ACID, or thé 4-34 of Ants exists in so disengaged a state, that the transpiration of these animals, and their simple contaét proves its existence. The large red ant furnishes the createst quantity, and: seems to be most replete with it in » the months of June and July, when its merely passing over blue paper, is sufficient to turnit red. This acid may be obtained by simple: distillation, only ‘mixed with a small quantity. of empyreumatic oil, from which it may be separated bya funnel. Its Specific gravity being to thatof Water, as 1,0075 to -1,0000 ;- When exceedingly pure; it is'as 1,0453 to a. It may also be obtained’ by lixiviation, washing _ the ants first in cold, and then in boiling water, un | tilallthe acid is procured. It may likewise be obtained ina Formrare or Por-Asu, -or of Sopa, by - placing,