Chemical News and Journal of Physical Science, Tom 99Chemical news office., 1909 |
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Strona 5
... tube , unless the process has been accidentally " rushed . " It seemed , therefore , possible to reduce the dimensions of the com- bustion - tube to such an extent as to secure the advantage of the Dennstedt furnace , which from its ...
... tube , unless the process has been accidentally " rushed . " It seemed , therefore , possible to reduce the dimensions of the com- bustion - tube to such an extent as to secure the advantage of the Dennstedt furnace , which from its ...
Strona 6
... tube , and the current of oxygen is passed at a slower rate at the beginning of the combustion . For acetanilide the following percentages were obtained : - Carbon , 7103 , 7124 ; hydrogen , 672 , 6.89 , the numbers for the formula C ...
... tube , and the current of oxygen is passed at a slower rate at the beginning of the combustion . For acetanilide the following percentages were obtained : - Carbon , 7103 , 7124 ; hydrogen , 672 , 6.89 , the numbers for the formula C ...
Strona 10
... tube D was opened for a moment , and the back pressure allowed to drive any last traces of air from the tube . After tightly closing the clamp again , the lamps under flasks A and B were removed , while the water in c was still kept ...
... tube D was opened for a moment , and the back pressure allowed to drive any last traces of air from the tube . After tightly closing the clamp again , the lamps under flasks A and B were removed , while the water in c was still kept ...
Strona 15
... tube which pro- jected 7 to 8 inches above the stopper and ended in a capillary was fitted into the neck of the flask , the water being kept boiling continuously . The water was allowed to boil for five minutes longer , when the ...
... tube which pro- jected 7 to 8 inches above the stopper and ended in a capillary was fitted into the neck of the flask , the water being kept boiling continuously . The water was allowed to boil for five minutes longer , when the ...
Strona 16
... tubes showed graded rusting with accumulation of ferric hydroxide . No rusting had occurred in any of the solutions above tube No. 8 , which contained six - hundred - and - fortieth normal bichromate , a strength corresponding to about ...
... tubes showed graded rusting with accumulation of ferric hydroxide . No rusting had occurred in any of the solutions above tube No. 8 , which contained six - hundred - and - fortieth normal bichromate , a strength corresponding to about ...
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Strona 138 - That no article shall be deemed misbranded, or adulterated within the provisions of this act when intended for export to any foreign country and prepared or packed according to the specifications or directions of the foreign purchaser when no substance is used in the preparation or packing thereof in conflict with the laws of the foreign country to which said article is intended to be shipped...
Strona 134 - Illustrations. 255. net. OILS, FATS, BUTTERS, AND WAXES : THEIR PREPARATION AND PROPERTIES, AND MANUFACTURE THEREFROM OF CANDLES, SOAPS, AND OTHER PRODUCTS. BY CR ALDER WRIGHT, D.Sc., FRS, Late Lecturer on Chemistry, St. Marv's Hospital Medical School ; Examiner in "Soap" to the City and Guilds of London Institute.
Strona 228 - Works by GS NEWTH, FIC, FCS, Demonstrator in the Royal College of Science, London. CHEMICAL LECTURE EXPERIMENTS. With 230 Illustrations. Crown 8vo. , 6s. CHEMICAL ANALYSIS, QUANTITATIVE AND QUALITATIVE. With 100 Illustrations. Crown 8vo., 6s. 6d.
Strona 134 - Illustrations. l6s. net. THE CHEMISTRY OF INDIA RUBBER. A" Treatise on the Nature of India Rubber, its Chemical and Physical Examination, and the Determination and Valuation of India Rubber Substitutes. Including the Outlines of a Theory on Vulcanisation. BY CARL OTTO WEBER, PH.D. " Replete with scientific and also with technical interest. . . . The section on physical properties is a complete resume of every thing known on the subject.
Strona 228 - OUTLINES OF THEORETICAL CHEMISTRY. By LOTHAR MEYER, Professor of Chemistry in the University of Tubingen. Translated by Professors P. PHILLIPS BEDSON, D.Sc., and W. CARLETON...
Strona 138 - November 18, 1908, and continuing five days. At this hearing those who favored the bleaching process and those who opposed it were given equal opportunities to be heard.
Strona 60 - For full information, inquiries should be addressed to the Registrar. Fellows and Associates are invited to communicate with the Registrar in any instance in which they are able to assist in securing appointments for qualified chemists.
Strona 134 - Journal. LONDON : CHARLES GRIFFIN & CO., LIMITED. EXETER STREET. STRAND THIRD EDITION. In Handsome Cloth. Fully Illustrated. 21s. net. PRINCIPLES AND PRACTICE OF BREWING. FOR THE USE OF STUDENTS AND PRACTICAL MEN. BY WALTER J. SYKES. REVISED BY ARTHUR R. LING, FIC, FCS, Editor of the Journal of the Institute of Brewing.
Strona 33 - ... been added, a pink color is developed. If the solution is allowed to stand perfectly quiet it will be noticed that the pink color is confined to certain spots or nodes on the surface. The pink color of the indicator is a proof of the presence of hydroxyl ions and thus indicates the negative poles. Many persons who are interested in the metallurgical problems connected with the iron and steel industry may not be familiar with the modern theory of indicators, and therefore...