Chemical News and Journal of Industrial Science, Volumes 27-28Chemical news office., 1773 |
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Página 1
... reaction , we are led to assume that in the first instance the chlorhydric acid of the aniline salt gives rise to ... reaction , becomes iodhydrate of mono- methylated dimethylophenylamine or xylidine , which in its turn is ultimately ...
... reaction , we are led to assume that in the first instance the chlorhydric acid of the aniline salt gives rise to ... reaction , becomes iodhydrate of mono- methylated dimethylophenylamine or xylidine , which in its turn is ultimately ...
Página 3
... reaction . It cannot , however , be wondered at that , under the influence of such extreme temperatures , many collateral changes must take place . The presence of dye - products is at once perceived , when the crystalline contents of ...
... reaction . It cannot , however , be wondered at that , under the influence of such extreme temperatures , many collateral changes must take place . The presence of dye - products is at once perceived , when the crystalline contents of ...
Página 4
... reaction , however , takes a different course . In my first experiments the acetic acid was allowed to react on the sulphocyanate under pressure ; but it soon became evident that this was unnecessary , simple digestion of the two bodies ...
... reaction , however , takes a different course . In my first experiments the acetic acid was allowed to react on the sulphocyanate under pressure ; but it soon became evident that this was unnecessary , simple digestion of the two bodies ...
Página 5
... react in an analogous manner with potassium sulphocyanate , with the difference , however , that here nearly exclusively the nitrile is formed . The production of amide is so insignifi- cant as to be scarcely recognisable . The reaction ...
... react in an analogous manner with potassium sulphocyanate , with the difference , however , that here nearly exclusively the nitrile is formed . The production of amide is so insignifi- cant as to be scarcely recognisable . The reaction ...
Página 25
... reaction . 2NaCl + H2S = Na2S + 2HCI . More experiments are in progress , to decide whether this is the only and ultimate reaction that takes place ; but from examinations of the gaseous products , the author inclines to the belief that ...
... reaction . 2NaCl + H2S = Na2S + 2HCI . More experiments are in progress , to decide whether this is the only and ultimate reaction that takes place ; but from examinations of the gaseous products , the author inclines to the belief that ...
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Palavras e frases frequentes
acetic acid action alcohol alkaline alumina ammonia analysis aniline anthracene apparatus appears applied Assays atoms barium baryta body boiling bromine calcium carbonic acid caustic cent chemical chemistry chemists chloric acid chloride coal colour combination composition compounds containing converted copper crystallisation crystals decomposed decomposition deposited dilute dissolved distilled electricity employed ether evaporation experiments filtered flask formation formed formic acid formula furnace fused glass heat hydrate hydrochloric acid hydrogen Improvements insoluble iodide iron Laboratory lime liquid magnesia manganese manufacture matter metallic method methyl mineral mixture nitrate nitric acid nitrogen observed obtained ordinary oxalic oxide oxidising oxygen paper PATENTS phosphate phosphoric acid potash potassa potassium precipitate prepared present produced pure pyrites quantity reaction Royal salt sample silicate silver Society soda sodium soluble solution substance sulphate sulphide sulphuretted hydrogen sulphuric acid temperature tion toluidine treated tube vapour washed yields zinc
Passagens conhecidas
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Página 108 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Página 232 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Página 5 - Thy Father has written for thee." " Come, wander with me," she said, "Into regions yet untrod; And read what is still unread In the manuscripts of God." And he wandered away and away With Nature, the dear old nurse, Who sang to him night and day The rhymes of the universe. And whenever the way seemed long, Or his heart began to fail, She would sing a more wonderful song, Or tell a more marvellous tale.
Página 170 - By a delicate mathematical analysis, Thomson arrives at the theorem that the ''average pressure at any point of an incompressible, frictionless fluid, originally at rest, but set in motion and kept in motion by solids, moving to and fro, or whirling round in any manner, through a finite space of it," would explain the attractions just described.
Página 144 - London. /Chemical Technology, or Chemistry in its ^-^ Applications to the Arts and Manufactures. By THOMAS RICHARDSON and HENRY WATTS.
Página 96 - Supplement; bringing the Record of Chemical Discovery down to the end of the year 1869 ; including also several Additions to, and Corrections of, former results which have appeared in 1870 and 1871.
Página 253 - ... effect is proportional to the magnetic intensity of the bar multiplied by the current traversing the coil seems to indicate that in this case the effect is produced by the attraction of the magnetic particles by the coil. But then it will be asked why so remarkable an augmentation of the effect is produced by the increase of tension in the case of the soft iron bars. When we are able to answer this question in a satisfactory manner, we shall probably have a much more complete acquaintance with...
Página 73 - Since it appeared that the purest and densest vapour alone gave the greatest number of lines, it became of interest to examine the spectra of compounds consisting of a metal combined with a nonmetallic element. Experiments with chlorides are recorded. It was found in all cases that the difference between the spectrum of the chloride and the spectrum of the metal was that under the same spark-conditions all the short lines were obliterated. Changing the spark-conditions, the final result was that...
Página 224 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.