Chemical News and Journal of Industrial Science, Tomy 5-6Chemical news office., 1862 |
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Strona 60
... treated by concentrated The new colouring matter is soluble in ether , to which | nitric acid , is transformed into a brown powder , forming , it imparts a violet - red tinge ; while alizarine gives it a when dissolved in alcohol , a ...
... treated by concentrated The new colouring matter is soluble in ether , to which | nitric acid , is transformed into a brown powder , forming , it imparts a violet - red tinge ; while alizarine gives it a when dissolved in alcohol , a ...
Strona 103
... treated with sulphuric acid of a density of 1.6 ° , evaporate until the sulphuric acid begins to evolve vapours . If the action is not perfect , add a little water and evaporate again in the presence of a sufficient excess of acid ...
... treated with sulphuric acid of a density of 1.6 ° , evaporate until the sulphuric acid begins to evolve vapours . If the action is not perfect , add a little water and evaporate again in the presence of a sufficient excess of acid ...
Strona 242
... treated by sulphuric acid , this nitrite of potash residue disengages red vapours . When the liquid col- lected during distillation is acidulated with sulphuric acid , instead of being treated by caustic potash , sulphate of ammonia is ...
... treated by sulphuric acid , this nitrite of potash residue disengages red vapours . When the liquid col- lected during distillation is acidulated with sulphuric acid , instead of being treated by caustic potash , sulphate of ammonia is ...
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