A Treatise on Pharmacy for Students and Pharmacists

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Lea & Febiger, 1920 - Pharmacy - 938 pages

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Page 74 - ... the ratio of the ovendry weight of a sample to the weight of a volume of water equal to the volume of the sample at some specific moisture content, as green, air-dry, or ovendry.
Page 99 - Physicists express this latent heat of fusion in terms of calories, the word calorie being used to designate the amount of heat necessary to raise the temperature of 1 gram of water from 0 C.
Page 801 - Piperita, rectified by steam distillation, and yielding not less than 5 per cent of esters, calculated as menthyl acetate (Ci0HigC2H3O2), and not less than 50 per cent of total menthol (Ci0Hi9OH), free and as esters.
Page 785 - Petroleum benzin is highly inflammable, and its vapor, when mixed with air and ignited, explodes violently.
Page 882 - ... minutes, and return the whole to the filter. When the liquid has drained off, wash the residue, as before, until the second filtrate measures 150 cc, and finally collect about 20 cc more of a third filtrate. Evaporate...
Page 861 - ... menstruum to saturate the powder and leave a stratum above it. When the liquid begins to drop from the percolator, close the lower orifice, and, having closely covered the percolator, macerate for forty-eight hours. Then allow the percolation to proceed, gradually adding menstruum, until the hydrastis is exhausted.
Page 883 - Rinse the flask and contents with 15 cc. of ether, and, when the ether has passed through, wash the funnel and cotton with a small quantity of ether and then pour the aqueous liquid into the funnel without trying to remove the crystals. Wash the crystals in the flask and the contents of the funnel with distilled water previously saturated with morphine, until the washings are colorless. Then add a few drops of distilled water to replace the morphinated water. Incline the edge of the funnel over the...
Page 571 - Dilute hydrochloric acid is an aqueous solution containing not less than 9.5 per cent nor more than 10.5 per cent of HC.
Page 895 - ... product is plainly marked with the proper name of the article contained therein, the name, address, and license number of the manufacturer, and the date beyond which the contents cannot be expected beyond reasonable doubt to yield their specific results...
Page 796 - The number of cc. of oil is read off, and by deducting this number from ten, the aldehyde content is ascertained. Accurately speaking, percentage by volume and not percentage by weight is determined in this manner.

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