Investigation of glycocoll and some of its products of decomposition / by Eben N. Horsford ; extracted from the American journal of science and arts, vols. III & IV, second series, 1847.

  • Horsford, Eben Norton, 1818-1893.
Date:
1847
Catalogue details

Licence: Public Domain Mark

Credit: Investigation of glycocoll and some of its products of decomposition / by Eben N. Horsford ; extracted from the American journal of science and arts, vols. III & IV, second series, 1847. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

    12/48
    Glycocoll and Nitrate of Copper. Boussingault. Horsford. C16 H! 6N40 j , +4N05+8CuO+9HO. C4H4N03,HO^uO;jm Carbon, Hydrogen, Nitrogen, . Oxygen, . Ox. copper, Equiv. Estimate. Result. Equiv. Estimate. n 02 2-75 12 86 36-79 36-58 16 = 96 24 = 24 8 = 112 40 = 320 8 = 317-6 11 02 2-75 12-86 36-79 36-58 11-04 2-89 1208 37-45 3654 4 = 24 6=6 2 = 28 10 = 80 2 = 79-4 abJ-6 10000 10000 217-4 100-00 If we review the estimates from the two systems of formulas, and the results of analysis recorded above, it will be seen— 1st. That the analyses of the compounds with nitrate of silver, more nearly correspond with the estimates from Boussingault's formula. 2d. That the analyses of the compounds with nitric acid, ni- trate of potash and nitrate of copper, are suited equally well to either formula. And 3d. That the analyses of the remaining compounds, viz : with the oxyds of silver, copper and lead, correspond more nearly with the simpler formula. As additional reasons for adopting the simpler formula, the fol- lowing, drawn from our investigation, may be recorded. 4th. The analyses give this constitution: as the average of four combustions for carbon and hydrogen, and two for nitrogen, will show, placed side by side with the estimates from the formula C4H4N03,HO. Theory. Experiment. Hydrogen, .... Nitrogen, - Oxygen, .... 4 equiv. = 24 5 =5 1 =14 4 =32 3200 6-67 18-67 4266 10000 3198 6-87 18-79 42-36 75 100 00 5th. It forms a compound in which sulphuric acid replaces the atom of water: C4H4N0,, SO, corresponding with Boussingault's nitrate, dried at 110° C. [230° P.]: C4H4N03,N05. 6th. It forms a compound with oxyd of copper, of this formula: C^H.NO,, CuO, HO, which, at 100° C, [212° F.] loses an atom of water. 7th. It forms a compound in which the atom of water is re- placed by an atom of nitrate of silver : C4H4N03; AgO,N05. 8th. It forms, when long digested with sulphuric acid, a salt of this constitution: C4H4N0,,S03H0 H4 NO, SO 3 HO.