Chemical News and Journal of Physical Science, Tom 105Chemical news office., 1912 |
Z wnętrza książki
Wyniki 1 - 5 z 100
Strona 7
... separated fractions , the composition and properties of which are known but the identity of which has not as yet ... separation or isolation of organic compounds , for the most part shaking out with immiscible solvents and precipitating ...
... separated fractions , the composition and properties of which are known but the identity of which has not as yet ... separation or isolation of organic compounds , for the most part shaking out with immiscible solvents and precipitating ...
Strona 8
... separation of crystals in the course of two or three days . Neither the bromo- nor the nitro- derivatives show this phenomenon . 66 317. Electrolytic Reduction . Part V. Benzylidene Bases . " By HERBERT DRAKE LAW . A series of compounds ...
... separation of crystals in the course of two or three days . Neither the bromo- nor the nitro- derivatives show this phenomenon . 66 317. Electrolytic Reduction . Part V. Benzylidene Bases . " By HERBERT DRAKE LAW . A series of compounds ...
Strona 12
... separated by dissolving in hydro- fluoric acid , adding excess of KI , and subjecting the mix- ture to fractional crystallisation . To separate tantalic and niobic acids from titanic acid Knop's method is the best ; i.e. , the ...
... separated by dissolving in hydro- fluoric acid , adding excess of KI , and subjecting the mix- ture to fractional crystallisation . To separate tantalic and niobic acids from titanic acid Knop's method is the best ; i.e. , the ...
Strona 15
... separated , leaving the aqueous layer clear . Cool and pour the solu- tion through a tuft of absorbent cotton into a 100 cc . flask . Break up the disk of fat , rinse it and the flask with 4 or 5 portions of 5 cc . each of water , and ...
... separated , leaving the aqueous layer clear . Cool and pour the solu- tion through a tuft of absorbent cotton into a 100 cc . flask . Break up the disk of fat , rinse it and the flask with 4 or 5 portions of 5 cc . each of water , and ...
Strona 16
... separated by filtration and the alcohol removed from the filtrate by evaporation , the volume being kept constant by the addition of water . There was thus formed a reddish brown precipitate which after separation and washing was in the ...
... separated by filtration and the alcohol removed from the filtrate by evaporation , the volume being kept constant by the addition of water . There was thus formed a reddish brown precipitate which after separation and washing was in the ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acetic acid action added alcohol alkali alloys aluminium ammonia ammonium amount Analysis APPARATUS atom barium boiling bromine carbon cent cerium Chem CHEMICAL NEWS Office Chemistry chemists chloride chromium CLERKENWELL ROAD colour compounds containing copper creatinine crucible crystallises crystals D.Sc decomposition described determined dilute dioxide dissolved Edition electric electrolytic ester ether ethyl experiments extract Farringdon Street ferric filtered filtrate flask formaldehyde gives gliadin graphite heat hydrate hydrochloric acid hydrogen hydroxide iodide iodine iron Laboratory lead liquid London melting melting-point mercury metal method mgrm mixture molecular molecules Newcastle Street nitric acid nitrogen obtained oxide oxidised oxygen paper phenol Physical platinum potassium precipitate prepared present Price Prof pure quantity radium reaction residue salts samples Sir William Crookes Society sodium sodium hydroxide soil soluble solution substance sulphate sulphide sulphuric acid temperature tion titration tube vanadium volume washed weight Yeast zinc