Anthracen, tr. and ed. by W. Crookes1877 |
Des de l'interior del llibre
Resultats 1 - 5 de 88.
Pàgina ix
... Sulphuric acid method Reactions of Anthracen Hydrides of Anthracen 1. Dihydride • • Preparation by sodium amalgam . 99 2. Hexahydride Bromine derivatives . Bibromanthracen by hydriodic acid Bibromanthracentetrabromide . Tribromanthracen ...
... Sulphuric acid method Reactions of Anthracen Hydrides of Anthracen 1. Dihydride • • Preparation by sodium amalgam . 99 2. Hexahydride Bromine derivatives . Bibromanthracen by hydriodic acid Bibromanthracentetrabromide . Tribromanthracen ...
Pàgina 33
... acid frequently contains lead . If this is the case , the anthraquinon , after having been washed with water and alkali , must be treated with a hot solution of ... Sulphuric acid method Broenner and Gutzkow's process Perkin's process.
... acid frequently contains lead . If this is the case , the anthraquinon , after having been washed with water and alkali , must be treated with a hot solution of ... Sulphuric acid method Broenner and Gutzkow's process Perkin's process.
Pàgina 34
... acid completes the reaction . Luck , and before him Graebe and Liebermann , have shown that chromic acid , and ... sulphuric acid , but it is only converted into sulphacids at temperatures far above 200 ° C. With the impurities the case ...
... acid completes the reaction . Luck , and before him Graebe and Liebermann , have shown that chromic acid , and ... sulphuric acid , but it is only converted into sulphacids at temperatures far above 200 ° C. With the impurities the case ...
Pàgina 35
... sulphuric acid to 100 ° -110 ° C. , the acid becomes either at once brown , or takes a blue , which turns yellow on dilution with water . Or , even if the sulphuric acid decanted from the an- thraquinon is colourless , a coloured ...
... sulphuric acid to 100 ° -110 ° C. , the acid becomes either at once brown , or takes a blue , which turns yellow on dilution with water . Or , even if the sulphuric acid decanted from the an- thraquinon is colourless , a coloured ...
Pàgina 36
... sulphuric acid , and displays altogether the character of purity . According to its degree of purity , anthracen forms larger or smaller tabular crystals , belonging to the monoclinar system . When perfectly white , they display a ...
... sulphuric acid , and displays altogether the character of purity . According to its degree of purity , anthracen forms larger or smaller tabular crystals , belonging to the monoclinar system . When perfectly white , they display a ...
Frases i termes més freqüents
acetic ether alcohol alcoholic solution alizarin alkali ammonia anthra anthracen anthracendihydride anthraflavic acid anthraquinon aqueous solution baryta barytic salt benzol bibromanthracen bisulphide of carbon blue bromine brown cent Centralblatt Chem chloride chromic acid chrysammic acid chrysophanic acid cold colouring matter compound concentrated sulphuric acid converted Crown 8vo crystallisation from alcohol crystals decomposed deposited deutsch dilute dinitroanthraquinon dissolves distillation dried Edition ether evaporation filtered filtrate flocks formation formed formula Gesellsch glacial acetic acid Graebe and Liebermann grms heated hydrate of potassa hydriodic acid hydrocarbon hydrochloric acid hydroxyls insoluble isopurpurin lime liquid madder mass melting melting-point methylanthracen mixture mordants naphthalin nitric acid obtained oxidation oxidising agents oxyanthraquinon Pharm phthalic acid potash powder precipitate purified purpurin quinon reaction readily soluble red colour residue Schunck Schützenberger soda soluble in alcohol soluble in water sparingly soluble sublimes substance sulpho-acids sulphuric acid temperature tion whilst Woodcuts yellow colour yellow needles yields
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