Chemical News and Journal of Physical Science, Tom 100Chemical news office., 1909 |
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Strona 4
... boiling succinic ester , whose purity was established by the fact that it distilled within one - fifth of a degree , on a return con- denser for four hours with water containing a few drops of nitric acid . This solution was evaporated ...
... boiling succinic ester , whose purity was established by the fact that it distilled within one - fifth of a degree , on a return con- denser for four hours with water containing a few drops of nitric acid . This solution was evaporated ...
Strona 5
... boiling water , steam , and superheated steam and oils . Heating does not melt it , nor even soften it to any serious extent . Boiling concentrated sulphuric acid destroys it ; so does concentrated nitric acid , but it withstands dilute ...
... boiling water , steam , and superheated steam and oils . Heating does not melt it , nor even soften it to any serious extent . Boiling concentrated sulphuric acid destroys it ; so does concentrated nitric acid , but it withstands dilute ...
Strona 12
... BOILING FLASKS , BEAKERS , RETORTS , TEST TUBES , TUBING FOR EXPLOSION FURNACES . COMPOUND TUBING ( D.R.P. ) Resisting in a high degree sudden changes of temperature and the action of corrosive chemicals . COMBUSTION TUBING FOR ...
... BOILING FLASKS , BEAKERS , RETORTS , TEST TUBES , TUBING FOR EXPLOSION FURNACES . COMPOUND TUBING ( D.R.P. ) Resisting in a high degree sudden changes of temperature and the action of corrosive chemicals . COMBUSTION TUBING FOR ...
Strona 13
... boiling at a temperature above that at which the substance experimented on vaporises at ordinary atmospheric pres- sures , or better in a thermostatic trough containing some convenient heating medium such as glycerin or paraffin wax ...
... boiling at a temperature above that at which the substance experimented on vaporises at ordinary atmospheric pres- sures , or better in a thermostatic trough containing some convenient heating medium such as glycerin or paraffin wax ...
Strona 15
... boiling - point and adding an excess of potassium free barium perman- ganate . Heintz treated 20 cc . to 30 cc . of clear urine with chlorplatinic acid and a threefold volume of a 1 : 4 ether and absolute alcohol mixture . After ...
... boiling - point and adding an excess of potassium free barium perman- ganate . Heintz treated 20 cc . to 30 cc . of clear urine with chlorplatinic acid and a threefold volume of a 1 : 4 ether and absolute alcohol mixture . After ...
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