Chemical News and Journal of Industrial Science, Tomy 107-108Chemical news office., 1913 |
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Strona 7
... heated for one or two hours , and it lost under these conditions from 10 to 20 per cent of its weight . Further experiments were made , in which the brass was heated for three , six , nine , and twelve hours . It was found that the ...
... heated for one or two hours , and it lost under these conditions from 10 to 20 per cent of its weight . Further experiments were made , in which the brass was heated for three , six , nine , and twelve hours . It was found that the ...
Strona 12
... heated to 350-360 ° in presence of alumina . When camphor is heated in presence of both catalysts a reaction begins to occur at 200 ° , and the chief product is crystalline isocamphane . Borneol also yields isocamphane when heated to ...
... heated to 350-360 ° in presence of alumina . When camphor is heated in presence of both catalysts a reaction begins to occur at 200 ° , and the chief product is crystalline isocamphane . Borneol also yields isocamphane when heated to ...
Strona 19
... heated with anhydrous oxalic acid . The hydrocarbon forms an oily dibromide , C10H18Br2 , which , when heated with alcoholic potassium hydroxide or with anhydrous sodium acetate and acetic acid , is converted into a menthadiene , C10H16 ...
... heated with anhydrous oxalic acid . The hydrocarbon forms an oily dibromide , C10H18Br2 , which , when heated with alcoholic potassium hydroxide or with anhydrous sodium acetate and acetic acid , is converted into a menthadiene , C10H16 ...
Strona 24
... heated and sharpened , while the other ores of prac- tically pure copper , when smelted , resulted in implements which were soft and inferior in cutting value . The sharp cutting implements were therefore the result of Nature's ...
... heated and sharpened , while the other ores of prac- tically pure copper , when smelted , resulted in implements which were soft and inferior in cutting value . The sharp cutting implements were therefore the result of Nature's ...
Strona 25
... heated . In 1670 , Schwanhardt ( or Schwankhardt ) , in Nuremberg , noted that when fluor- spar was heated with oil of vitriol the vapours given off etched glass . Little further was discovered about the mineral until Scheele more than ...
... heated . In 1670 , Schwanhardt ( or Schwankhardt ) , in Nuremberg , noted that when fluor- spar was heated with oil of vitriol the vapours given off etched glass . Little further was discovered about the mineral until Scheele more than ...
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