The Chemistry and Analysis of Drugs and MedicinesJohn Wiley & sons, Incorporated, 1920 - 1072 pages |
From inside the book
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Page 29
... mils ; collect the chloroform solutions in a beaker , place it on a water - bath containing warm water , and allow the chloro- form to evaporate entirely . Dissolve the residue in 3 mils of ether , and let this also , evaporate ...
... mils ; collect the chloroform solutions in a beaker , place it on a water - bath containing warm water , and allow the chloro- form to evaporate entirely . Dissolve the residue in 3 mils of ether , and let this also , evaporate ...
Page 37
... mil of alcohol and again evaporate . Repeat this operation once more and dry the residue to constant weight at 100 ° C. To this weighed residue contained in a flask add 5 mils of N / 10 sulphuric acid V. S. and 5 mils of distilled water ...
... mil of alcohol and again evaporate . Repeat this operation once more and dry the residue to constant weight at 100 ° C. To this weighed residue contained in a flask add 5 mils of N / 10 sulphuric acid V. S. and 5 mils of distilled water ...
Page 48
... water , and evaporated by gentle boiling until the weight is reduced to 9 or 11 grams , in order to drive off the alcohol . After cooling somewhat , 1.5 grams of ... water 5 mils each , the acid 48 GENERAL METHODS AND CRUDE DRUG ASSAYS.
... water , and evaporated by gentle boiling until the weight is reduced to 9 or 11 grams , in order to drive off the alcohol . After cooling somewhat , 1.5 grams of ... water 5 mils each , the acid 48 GENERAL METHODS AND CRUDE DRUG ASSAYS.
Page 50
... mils of cold water and when dissolved 100 mils of 90 per cent alcohol added , heated for one- half hour on the water - bath , filtered , the filter washed with 50 mils of hot alcohol , the filtrate heated on the water - bath until the ...
... mils of cold water and when dissolved 100 mils of 90 per cent alcohol added , heated for one- half hour on the water - bath , filtered , the filter washed with 50 mils of hot alcohol , the filtrate heated on the water - bath until the ...
Page 53
... mils water ; 25 mils of 5 per cent potassium ferrocyanide are then added , and the mixture well shaken and allowed to stand six hours . The precipitate is transferred to a small filter , washed with water containing about its volume of ...
... mils water ; 25 mils of 5 per cent potassium ferrocyanide are then added , and the mixture well shaken and allowed to stand six hours . The precipitate is transferred to a small filter , washed with water containing about its volume of ...
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Other editions - View all
The Chemistry and Analysis of Drugs and Medicines (Classic Reprint) Henry Corbin Fuller No preview available - 2018 |
The Chemistry and Analysis of Drugs and Medicines (Classic Reprint) Henry Corbin Fuller No preview available - 2018 |
Common terms and phrases
20 mils acetanilid acetic acid acid solution added alcohol alcoholic solution alkali alkaloids ammonia ammonium amount antipyrin antiseptic aqueous solution balsam benzoic benzol boiling bromin caffein camphor carbonate cent alcohol chloroform cocain color colorless combined compound concentrated sulphuric acid containing cool crystalline crystals determined dissolved distilled drops drug ester evaporated excess extract ferric chloride filter filtrate flask funnel gives glucoside gram heated hydrochloric acid hydrogen insoluble iodin ipecac liquid medicinal melting mercuric method methyl mils of water mils water mixture morphin neutral nitric acid obtained odor opium oxide petroleum ether phenol portion potassium hydroxide powder precipitate present quantity quinin reaction readily soluble reagent removed residue resin salicylic acid salts sample separated shaking sodium bicarbonate sodium hydroxide solu soluble in alcohol soluble in water solvent strychnin substance sulphate sulphuric acid tablets tion titrated treated tube violet volatile washed weighed yellow yields
Popular passages
Page 57 - Cm., plainly folded, one within the other (the triple fold of the inner filter being laid agamst the single side of the outer filter) , wet them well with ether, and decant the ethereal solution as completely as possible upon the inner filter. Add 10 Cc. of ether to the contents of the flask, rotate it, and again decant the ethereal layer upon the inner filter.
Page 58 - ... and afterwards wash them, drop by drop, from a pipette, with alcohol previously saturated with powdered morphine. When this has passed through, displace the remaining alcohol by ether, using about 10 cc or more, if necessary. Allow the filter to dry in a moderately warm place, at a temperature not exceeding 60° C. (140° F. ) until its weight remains constant, then carefully transfer the crystals to a tared watch-glass and weigh them.
Page 758 - Shake the latter thoroughly, remove the stopper, and rinse it and the neck of the flask with a little distilled water, so that the washings may flow into the flask, then add 1 cc.
Page 56 - ... 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 mouth of the flask and by means of a glass rod carefully...
Page 890 - If a carbon-free ash can not be obtained in this manner, exhaust the charred mass with water, collect the insoluble residue on a filter, burn till the ash is white or nearly so, and then add the filtrate to the ash and evaporate to dryness. Heat the whole to a low redness and weigh. 3. Crude Protein. — Official. Determine nitrogen as directed under fertilizers "4. (a) or (b)," page 5, and multiply the results by 6.25.
Page 322 - Is precipitated with 40 parts of tannlc acid. The tannate Is mixed with 25 parts of powdered litharge and 50 parts of purified animal charcoal and dried. From the dried mass the digitalis bodies are extracted with 90 per cent, alcohol, the latter Is distilled off and the residue washed with distilled water and again taken up In 90 per cent, alcohol. This is again distilled and the residue exhausted with chloroform.
Page 758 - Shake the flask repeatedly during half an hour, allow it to stand for fifteen minutes, remove the stopper just sufficiently to introduce quickly 5 cc. of an aqueous solution of potassium iodide (1 in 5), being careful that no bromine vapor escapes, and at once stopper the flask. Shake...