Chemical News and Journal of Physical Science, Tom 114Chemical news office., 1916 |
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Strona 3
... colour being given when boron is present . In preparing the samples the roots were separated from the plants . Both ... colours on the strips of paper were compared , and the percentage of boric acid determined . In the case of soils ...
... colour being given when boron is present . In preparing the samples the roots were separated from the plants . Both ... colours on the strips of paper were compared , and the percentage of boric acid determined . In the case of soils ...
Strona 12
... coloured liquids , duration of heating , volume of the acid liquid , concentra- tion of the acid , and purity of the ... Colour - making in War time . " D. F. C. War . " B. DoOTT , " Production of Alkaloids as affected by the H. CARR ...
... coloured liquids , duration of heating , volume of the acid liquid , concentra- tion of the acid , and purity of the ... Colour - making in War time . " D. F. C. War . " B. DoOTT , " Production of Alkaloids as affected by the H. CARR ...
Strona 22
... colour changed with the rise in temperature until at 22 ° it was a reddish brown . The mixture was then allowed to stand over night at a temperature of o ° . In the morning the whole mass had changed to a light brown jelly . It turned ...
... colour changed with the rise in temperature until at 22 ° it was a reddish brown . The mixture was then allowed to stand over night at a temperature of o ° . In the morning the whole mass had changed to a light brown jelly . It turned ...
Strona 24
... COLOUR CHEMISTRY Professor ARTHUR G. PERKIN , and DYEING ... ... LEATHER INDUSTRIES . Emeritus Professor H. R. PROCTER , D.Sc. COAL - GAS and FUEL IN- Professor JOHN W. COBB , B.SC. , DUSTRIES , with METAL- LURGY ... F.I.C. AGRICULTURAL ...
... COLOUR CHEMISTRY Professor ARTHUR G. PERKIN , and DYEING ... ... LEATHER INDUSTRIES . Emeritus Professor H. R. PROCTER , D.Sc. COAL - GAS and FUEL IN- Professor JOHN W. COBB , B.SC. , DUSTRIES , with METAL- LURGY ... F.I.C. AGRICULTURAL ...
Strona 27
... colour in the solution or a blue residue indicates the presence of tungsten . In either case , if reduction is continued long enough , a brown colour is obtained . A These tests if properly used will show the presence of tungsten in ...
... colour in the solution or a blue residue indicates the presence of tungsten . In either case , if reduction is continued long enough , a brown colour is obtained . A These tests if properly used will show the presence of tungsten in ...
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acetate acetone added aluminium aluminium chloride ammonia ammonium amount analysis antimony apparatus applied B.Sc benzene boiling boron British bromine carbon carotin cent Chem CHEMICAL NEWS Office chemist Chemistry chloric acid College colour commercial compounds concentrated containing copper course crucible D.Sc determined dilute dissolved distillation dyeing Engineering ether ethyl alcohol evaporated experiments extract Farringdon Street ferric chloride filter filtrate flask glass heated hydrochloric acid hydrogen hydrolysis industry insoluble investigation iodide iron Laboratory Lectures London manufacture material metal method mixture monazite Newcastle Street nitrate nitric acid nitrogen obtained organisation oxide paper phosphate physical plant platinum potassium practical precipitate prepared present Price production Prof pure quantity radium reaction reagent residue salt samples scientific silica Society sodium soluble solution starch Students substances sulphate sulphide sulphuric acid Table Technical temperature thorium tion toluene trade Trinitrotoluene tube volume washed weight