Chemical News and Journal of Physical Science, Tom 109Chemical news office., 1914 |
Z wnętrza książki
Wyniki 1 - 5 z 86
Strona 6
... melted metal ( as much as MM . G. Charpy and Cornu . These scholars have under - 10 cubic metres ) in one workshop . This is a cause of very stood that , in order to obtain a comparison between serious accidents that often occur when ...
... melted metal ( as much as MM . G. Charpy and Cornu . These scholars have under - 10 cubic metres ) in one workshop . This is a cause of very stood that , in order to obtain a comparison between serious accidents that often occur when ...
Strona 21
... melting at 315 ° . Both substances yield monoacetyl derivatives . When oleanol itself is oxidised with chromic acid the above - mentioned substance , C29H4204 ( m . p . 275 ° ) , is formed , together with a mixture of at least three car ...
... melting at 315 ° . Both substances yield monoacetyl derivatives . When oleanol itself is oxidised with chromic acid the above - mentioned substance , C29H4204 ( m . p . 275 ° ) , is formed , together with a mixture of at least three car ...
Strona 22
... melts at 129-130 ° , and has [ a ] D 19+ 347 ° in solution in pyridine , and [ a ] D 40 + 18.6 ° in solution in alcohol . The lavo - acid has also been isolated , and its properties are the same as those of its dextro - isomeride . 301 ...
... melts at 129-130 ° , and has [ a ] D 19+ 347 ° in solution in pyridine , and [ a ] D 40 + 18.6 ° in solution in alcohol . The lavo - acid has also been isolated , and its properties are the same as those of its dextro - isomeride . 301 ...
Strona 32
... melting at 118 -121 ° . a - Aminopalmitylglycine , - NH , CısHgo CO NHCH2CO2H , prepared by heating a - bromopalmitylglycine with ammonia , crystallises in colourless hexagonal plates , melting and decomposing at 222-224 ° . Similar ...
... melting at 118 -121 ° . a - Aminopalmitylglycine , - NH , CısHgo CO NHCH2CO2H , prepared by heating a - bromopalmitylglycine with ammonia , crystallises in colourless hexagonal plates , melting and decomposing at 222-224 ° . Similar ...
Strona 33
... melting 35 - Dihydroxy - 7 - keto - 4 - dimethylaminophenyl - 2 - m - p di at 82 , and is analogous to dianhydrotrisdiphenyl - hydroxyphenyl - 1 : 4 - benzopyran , obtained from quercetin by the action of dimethylaniline in the presence ...
... melting 35 - Dihydroxy - 7 - keto - 4 - dimethylaminophenyl - 2 - m - p di at 82 , and is analogous to dianhydrotrisdiphenyl - hydroxyphenyl - 1 : 4 - benzopyran , obtained from quercetin by the action of dimethylaniline in the presence ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
absorption acetic action active alcohol alkali alloy ammonium amount analysis anode ANTIMONIAL apparatus aqueous atomic weight B.Sc carbon dioxide cent Chem CHEMICAL NEWS Office Chemical Society Chemistry chemists chloride CLERKENWELL ROAD colour compounds concentration containing copper crystallised curves D.Sc derivatives determined dilute distillation electric electrolyte electrons equation esters experiments Farringdon Street formation formic acid gives glass grms heat Hedychium hydrogen hydroxide Index iodide ions iron J. J. Thomson Journal ketone Laboratory lectures liquid London melting metal method methyl MICA mixture molecular molecules Newcastle Street nitrate nitrogen obtained oxalic acid oxide oxygen paper passive phenyl platinum polarisation potassium precipitate present pressure produced Prof quantity radium rays reaction reagent rotation rotatory dispersion rotatory power salt sodium solution solvent substances sulphate sulphuric acid surface temperature tested theory tion Trans tube ultra-violet valency vapour velocity volume W. H. PERKIN ΙΟ
Popularne fragmenty
Strona 63 - My strong impression is that the surface of the iron is oxidised, or that the superficial particles of the metal are in such relation to the oxygen of the electrolyte as to be equivalent to an oxidation; and that having thus their affinity for oxygen satisfied, and not being dissolved by the acid under the circumstances, there is no renewal of the metallic surface, no reiteration of the attraction of successive particles of the iron on the elements of successive portions of the electrolyte, and therefore...
Strona 161 - ... serves to correlate some properties of metals which at first sight would appear to bear no relation to each other; it leads, namely, to the fact that there is a parallelism between all the elastic properties of metals for which quantitative measurements have been made and the pressure — assumed to act on the solid phase, but not, or not to the same extent, on the liquid phase — which is required to lower the melting-point to ordinary temperature. This pressure is a function of the melting-point,...
Strona 180 - APPOINTMENTS REGISTER. — A Register of Fellows and Associates of the Institute of Chemistry who are available for appointments is kept at the Office of the Institute.
Strona 76 - INSTITUTE was held at the Institution of Civil Engineers, Great George Street, Westminster, on Thursday and Friday, May 7 and 8, 1914, Mr.
Strona 149 - NATURE [MARCH 19, 1914 that the metal acquires a negative charge during the catalytic combustion of gases in contact with it...
Strona 180 - Hostel. For Prospectus and Particulars apply to the DEAN (WILLIAM WRIGHT, MB, D.Sc., FRCS), who will be glad to make arrangements for any one wishing to see over the College and Hospital.
Strona 132 - Methods. Courses for Beginners, as well as for Advanced Students, in Physiology and Technology of Fermentations. Biological Analysts of Yeast. The Laboratory possesses a numerous collection of yeasts (brewers', distillers', wine, disease yeasts), moulds, and bacteria. Manual*: E. Chr. Haasen, " Practical Studies in Fermentation,
Strona 123 - Since the specific gravity of a substance is the weight of a unit volume of the substance compared, the susceptibilities may be converted into mass values by dividing the volume values...
Strona 195 - About 5CIU' of water was added, and then from 2cm> to 5cm3 of sulphuric acid. The water and excess of sulphuric acid were evaporated off by directing a small flame from the blast lamp nearly vertically downward upon the liquid. The evaporation required about fifteen minutes. The results obtained upon weighing the crucible and barium sulphate were satisfactory in three cases out of five, but in the other two cases there was loss. To prevent this a cone of fine platinum gauze was fitted into the mouth...