Journal of the American Chemical Society, Volume 24American Chemical Society, 1902 - Chemistry Features definitive articles and communications, as well as book and software reviews, covering all areas of chemistry. |
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Page 4
... standing no crystals separated from a colorless or nearly colorless solution , it was concentrated to small volume and again set aside to crystallize . The entire alkaloid was treated in this manner and all the filters and cotton plugs ...
... standing no crystals separated from a colorless or nearly colorless solution , it was concentrated to small volume and again set aside to crystallize . The entire alkaloid was treated in this manner and all the filters and cotton plugs ...
Page 9
... standing in methyl alcohol for several days had changed to fine silky needles but we were not able to repeat the operation . Heating to 100 ° to constant weight removes 3.4 per cent . water . I. 0.136 gram of the water - free double ...
... standing in methyl alcohol for several days had changed to fine silky needles but we were not able to repeat the operation . Heating to 100 ° to constant weight removes 3.4 per cent . water . I. 0.136 gram of the water - free double ...
Page 42
... standing , dense deposits of disintegrated crystals , above which a voluminous flocculent layer of amorphous matter settles . Some samples , when thus treated , separate completely from the solution , leaving it clear and easily ...
... standing , dense deposits of disintegrated crystals , above which a voluminous flocculent layer of amorphous matter settles . Some samples , when thus treated , separate completely from the solution , leaving it clear and easily ...
Page 48
... standing some time , the solution was filtered and the undissolved edestin thoroughly washed with 75 per cent . alcohol . The filtrate and washings , when evaporated , left a residue which , when dried at 110 ° , was analyzed with the ...
... standing some time , the solution was filtered and the undissolved edestin thoroughly washed with 75 per cent . alcohol . The filtrate and washings , when evaporated , left a residue which , when dried at 110 ° , was analyzed with the ...
Page 57
... standing over night , in the stoppered bottles , the difference between the various portions was much more pronounced , for from those to which 4 , 5 , and 6 cc . of acid had been added , an opaque yellowish jelly had sepa- rated ...
... standing over night , in the stoppered bottles , the difference between the various portions was much more pronounced , for from those to which 4 , 5 , and 6 cc . of acid had been added , an opaque yellowish jelly had sepa- rated ...
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Common terms and phrases
acid solution action added alcohol addition-product alkaline alkaloid alloys alumina aluminum ammonia ammonium amount amyl alcohol analysis anethol antimony apparatus aqua atomic weight barium hydroxide benzene boiling brucine brucine hydrochloride cadmium calculated carbon dioxide cent Chem chemical chemistry color compound concentrated containing crystals determined dibromide dilute dissolved distilled earths edestin erbium ether ethyl alcohol evaporated excess experiments filtered filtrate flask formed fraction gram gram gave gram silver bromide heat hydrochloric acid hydrogen inhibitive insoluble iodide iodine iron laboratory liquid melting metal method methyl mixture molar molecules neutral nitrate nitric acid nitrogen normal obtained oxalate oxide oxygen phosphate platinum portion potash potassium hydroxide precipitate prepared Pres protein pure quantity reaction reagent residue salt sample Section separated silica silver bromide sodium chloride soil soluble solvent substance sulphate sulphide sulphuric acid TABLE tellurium temperature terbia thiocyanate thorium tion tube washed yttria ΙΟ