Chemical News and Journal of Industrial Science, Tomy 111-112Chemical news office., 1915 |
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Strona 9
... ordinary glass test- tube , but really made of the all - but infusible silica , now so great a blessing to the chemist , is held up inverted in a frame . A fine silica tube carrying the self - supporting mix- ture is lighted and put up ...
... ordinary glass test- tube , but really made of the all - but infusible silica , now so great a blessing to the chemist , is held up inverted in a frame . A fine silica tube carrying the self - supporting mix- ture is lighted and put up ...
Strona 27
... ordinary potassium sul- phate turns to a dark grey with a slight greenish tint at first . After a short while the very sensitive grey will disappear , simply under the ordinary temperature of the laboratory A Paper read before Section A ...
... ordinary potassium sul- phate turns to a dark grey with a slight greenish tint at first . After a short while the very sensitive grey will disappear , simply under the ordinary temperature of the laboratory A Paper read before Section A ...
Strona 28
... ordinary form , by which the different components are finally separated from each other , and at least one of them is set entirely free , but that the components detained by absorption remain at a quite short distance from each other ...
... ordinary form , by which the different components are finally separated from each other , and at least one of them is set entirely free , but that the components detained by absorption remain at a quite short distance from each other ...
Strona 29
... ordinary ultra - violet light ; further , I could guess that also the X - rays would produce after - colours ( which in this case have been observed by Holzknecht ) , and in recent times I could foresee that solid aromatic substances ...
... ordinary ultra - violet light ; further , I could guess that also the X - rays would produce after - colours ( which in this case have been observed by Holzknecht ) , and in recent times I could foresee that solid aromatic substances ...
Strona 33
... ordinary sub - conditions . The yield of the ester boiling at 196-200 ° is 104 grms . , or 60 per cent of that theoretically possible . Preparation of Ethyl Cyanoacetate . - This ester may be readily prepared by a modification of the ...
... ordinary sub - conditions . The yield of the ester boiling at 196-200 ° is 104 grms . , or 60 per cent of that theoretically possible . Preparation of Ethyl Cyanoacetate . - This ester may be readily prepared by a modification of the ...
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