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 . ing a solution which has the same properties and de-portment with reagents as that of powdered iron. If the solu-tion takes place without a copious evolution of gas, and has,when filtered, a yellowish appearance inst
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 . ing a solution which has the same properties and de-portment with reagents as that of powdered iron. If the solu-tion takes place without a copious evolution of gas, and has,when filtered, a yellowish appearance instead of a light-greenone, the powder was more or less oxidized, or even so much soas to consist almost wholly of a mixture of ferrous and ferricoxides. Examination of Iron: Sulphur may be recognized by the black coloration of a so-lution of plumbic acetate, when a little of the iron is dissolvedin a mixture of equal parts of hydrochloricacid and water, either in a test-tube, looselyclosed with a bunch of cotton moistened withsolution of plumbic acetate (Fig. 29, page 72),or in a small flask (Fig. 64), whence theevolved gas is passed through a solution ofplumbic acetate in a test-tube. If the plum-bic solution in either case becomes black,sulphur is , phosphorus, and arsenic, may be detected, in ironpowder, filings, turnings, or wire, by submitting about 100. Fig. 64.
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Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
