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 . s containing water of crystallization,and of volatile compounds. (c) The substance fuses^ expelling aqueous vapors^ whichcondense in the cooler parts of the tube; indicating salts withwater of crystallization (these
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 . s containing water of crystallization,and of volatile compounds. (c) The substance fuses^ expelling aqueous vapors^ whichcondense in the cooler parts of the tube; indicating salts withwater of crystallization (these will generally re-solidify after theexpulsion of the water), or decomposable hydrates, which oftengive off their water without fusing. id) Gases or fumes are evolved: smell of iodine from iodinecompounds; smell of sulphurous acid from decomposition ofsulphates; smell of nitric oxides from the nitrates; smell ofammonia from ammonium salts, from cyanides, or from nitroge-nous organic compounds, in which latter case carbonizationtakes place, and either cyanogen or empyreumatic fumes es-cape w4th the ammonia. {e) Sublimates are formed by volatile substances, as sulphur. 36 MANUAL OF CHEMICAL ANALYSIS. and compounds of ammonium, mercury, arsenic, and this case the sublimate is removed to the bottom of thetest-tube, and, together with the substance, is covered with a. Tia. 11. few small pieces of charcoal, and again heated; mercury andarsenic form metallic sublimates, the latter with the character-
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Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
