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 . awhite cloud at the line of separation between the two strata;when cinchonidia is the only impurity, it will appear at theline of contact as an Oily-like stratum, consisting, when magni-fied, of minute amorphous part
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 . awhite cloud at the line of separation between the two strata;when cinchonidia is the only impurity, it will appear at theline of contact as an Oily-like stratum, consisting, when magni-fied, of minute amorphous particles, while cinchonia appearscrystalline. Another and ready method of distinguishing the threeprincipal associate alkaloids, in quinia sulphate, is StoddarcPschsmico-microsGopiG test: Five grains of the quinia sulphateare dissolved in two drachms of distilled water, acidulated withfour drops of diluted sulphuric acid ; of this solution, one smalldrop is placed upon the glass slip, and about half a drop of so- 324: MANUAL OF CHEMICAL ANALYSIS. lution of potassium sulpliocyanide is put by its side : both arethen covered with one piece of thin glass, which will cause thedrops to touch. At the line of junction, an immediate precipi-tation takes place, and the crystals of the different alkaloidsmay be recognized, under the microscope, at a magnifying Fig. 84. Fig. 85. Fig. 400 diam. Quinia Sulphocyanide. 400 diam. Q,uinidia Sulphocyanide, 400 diam. Cir clioniaSulptiocyanide. power of about 60 diameters. The particles arrange them-selves into groups, quinia salt forming long, slender needles(Fig. 84), quinidia, radiate crystalline needles (Fig. 85), and cin-chonia, comparatively large prisms (Fig. 86). QTTINIiE TANNAS. CHININUM SEU CHINIUM TANNICUM. Tannate of Quinia or Quinine. Quinia Tannate. A yellowish-white, amorphous powder, which, when heated,becomes brown, fuses, and is wholly dissipated ; it is only spar-ingly soluble in cold water, requiring 453 parts of it, but dis-s
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Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
