The Pharmaceutical era . tes, and the oxids of the noble metals. It isused largely for the bleaching of hair and wool, and inmedicine as an antiseptic and germicide. Solutions of thedioxiil in various liquids, as water, glycerin, aresold under trade names as hair bleaches, and as surgicaland dental disinfectants. Two characteristic reactions of hydrogen dioxid arethat it colors a solution of a chromate, acidulated withsulfuric acid, deep blue, due to the formation of perchro-iiuc acid, and that it will release iodin from potassiumioilid in the presence 0I ferrous siiljcitc. The numerous
The Pharmaceutical era . tes, and the oxids of the noble metals. It isused largely for the bleaching of hair and wool, and inmedicine as an antiseptic and germicide. Solutions of thedioxiil in various liquids, as water, glycerin, aresold under trade names as hair bleaches, and as surgicaland dental disinfectants. Two characteristic reactions of hydrogen dioxid arethat it colors a solution of a chromate, acidulated withsulfuric acid, deep blue, due to the formation of perchro-iiuc acid, and that it will release iodin from potassiumioilid in the presence 0I ferrous siiljcitc. The numerous other compounds of oxygen are mostadvantageously considered in connection with the differ-ent elements with which it STUDIES. 1. In a Mask or test tube place 5 or 10 grams of potas-sium chlorate in crystals, mixed with manganese dioxid,and heat in a bunsen burner or alcohol lamp tiame. () By means of a delivery tube collect several largertubes full nf the gas by displacement of water. Leave the. Fig. 27,.~ Students Oxygen Geu«rator. lubes of gas mouth downward in the water of the pneu-matic trough until wanted for use. 2. Into one of the tubes held mouth upward insert ajiine splinter the end of which is a glowing coal. Whatoccurs? .?. Tipastraightenedpieceof watch si)ring, about 1,5 , with sulfur. Ignite the sulfur and hold it in theoxygen contained in another tube. If the conditionsare properly observed ami sufficient oxygen is presentthe watch spring will burn with a shower of brilliantsparks. The sparks given off. if collected will be foundto be magnetic. They are in fact magnetic oxid of iron,Fe,0,. Instead of collecting the gas in lubes, the splinter bear-ing the live coal and the watch spring may be held di-rectly in the tube in which the oxygen is being released,but in tills case it will Iw fcjtind harder to cause the ig- 71: THE PHAKMACEUTICAL EICA. [iNovciiiuer ii, mvi nitiuu of the spriuK bci-uuw <if tlio diluiiiig vftvvl of theai
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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1
