Chemical News and Journal of Physical Science, Tom 104Chemical news office., 1911 |
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Strona 1
... tubes for five hours at 225 ° . The reaction product is subjected to fractional distillation ; the fraction passing over between 180 ° and 230 ° is collected separately , and on solidification pressed out on a drying - plate . The ...
... tubes for five hours at 225 ° . The reaction product is subjected to fractional distillation ; the fraction passing over between 180 ° and 230 ° is collected separately , and on solidification pressed out on a drying - plate . The ...
Strona 2
... tubes according to the Hofmann - Gattermann directions . The yield is , how . ever , slightly variable , depending on the quality of the ammonium acetate ... tube 2 CHEMICAL NEWS , July 7 , 1911 Study of the Fruit of the Solanum dulcamara.
... tubes according to the Hofmann - Gattermann directions . The yield is , how . ever , slightly variable , depending on the quality of the ammonium acetate ... tube 2 CHEMICAL NEWS , July 7 , 1911 Study of the Fruit of the Solanum dulcamara.
Strona 3
... tube , and the tube placed in a boiling water - bath . The time required for the osazone formation was taken . Several tests pointed to fructose . A loss of 46 05 per cent was found when the berries were dried and weighed after the ...
... tube , and the tube placed in a boiling water - bath . The time required for the osazone formation was taken . Several tests pointed to fructose . A loss of 46 05 per cent was found when the berries were dried and weighed after the ...
Strona 4
... tube , connected at one sistent with free movement . A piece of glass tube with a cork in it , in which the rod is fixed , will furnish a suitable cap . The working of the regulator is virtually the same as with model A ; in practice ...
... tube , connected at one sistent with free movement . A piece of glass tube with a cork in it , in which the rod is fixed , will furnish a suitable cap . The working of the regulator is virtually the same as with model A ; in practice ...
Strona 9
... tube is thus attained . Common olive oil is employed between 50 ° and 220 ° C. , and above that temperature mixtures of fused salts are used , one of the most convenient being equal molecules of KNO3 and NaNO3 , which melts at 219 ° C ...
... tube is thus attained . Common olive oil is employed between 50 ° and 220 ° C. , and above that temperature mixtures of fused salts are used , one of the most convenient being equal molecules of KNO3 and NaNO3 , which melts at 219 ° C ...
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