Manual of chemical analysis as applied to the examination of medicinal chemicals : a guide for the determination of their identity and quality, and for the determination of their identity and quality, and for the detection of impurities and adulterations : for the use of pharmaceutists, physicians, druggists, and manufacturing chemists, and of pharmaceutical and medical students . Fig. Fig. 8. at a lower temperature, containing about four times its volumeof the gas. The gas is likewise obtained by the action of di-luted sulphuric acid upon ferrous sulphide, and is washed inwater, contained
Manual of chemical analysis as applied to the examination of medicinal chemicals : a guide for the determination of their identity and quality, and for the determination of their identity and quality, and for the detection of impurities and adulterations : for the use of pharmaceutists, physicians, druggists, and manufacturing chemists, and of pharmaceutical and medical students . Fig. Fig. 8. at a lower temperature, containing about four times its volumeof the gas. The gas is likewise obtained by the action of di-luted sulphuric acid upon ferrous sulphide, and is washed inwater, contained in a small flask or cylinder (Fig. 8), beforepassing it into water for absorption. 24 MANUAL OF CHEMICAL ANALYSIS. In order to preserve the hydrosulphuric acid, it is advisableto fill the freshly-prepared saturated solution immediately into2- or 4-ouuce vials, and to place them, tightly corked, in aninverted position, in a jar filled with water. When, in the course of a test, a solution has to be actedupon for some time by hydrosulphuric acid, a test-tube or fiaskmay be employed, of such size as nearly to be filled by theliquid. It may then be tightly stoppered, allowing sufiicientescape of air before corking, if it has to be warmed. Chlorine Water.—A saturated aqueous solution of chlorine,containing about per cent, by weight of gas. For ana-lytical use, this solution is bes
Size: 1738px × 1438px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
