Anthracen, tr. and ed. by W. Crookes1877 |
Des de l'interior del llibre
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Pàgina 26
... solution is obtained which deposits greenish blue flocks of an exceedingly unpleasant odour . After distillation there remains in the retort a wax- like substance which takes fire on exposure to the air , and deposits on colder parts a ...
... solution is obtained which deposits greenish blue flocks of an exceedingly unpleasant odour . After distillation there remains in the retort a wax- like substance which takes fire on exposure to the air , and deposits on colder parts a ...
Pàgina 33
... solution in the filtrate . Commercial chromic 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 acetate of ammonia . Some ...
... solution in the filtrate . Commercial chromic 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 acetate of ammonia . Some ...
Pàgina 36
... solution of picric acid , saturated at 30 ° -40 ° . It forms fine ruby - red crystals , which are decomposed by water or alcohol , and more readily by alkaline lyes . With a solution of binitroanthraquinon in benzol it forms fine violet ...
... solution of picric acid , saturated at 30 ° -40 ° . It forms fine ruby - red crystals , which are decomposed by water or alcohol , and more readily by alkaline lyes . With a solution of binitroanthraquinon in benzol it forms fine violet ...
Pàgina 37
... solution of anthracen in benzol is ex- posed to the rays of the sun , tabular crystals of paraanthracen ( paraphoten of Fritzsche ) are deposited , very sparingly soluble in benzol , ether , and alcohol . If melted , which takes place ...
... solution of anthracen in benzol is ex- posed to the rays of the sun , tabular crystals of paraanthracen ( paraphoten of Fritzsche ) are deposited , very sparingly soluble in benzol , ether , and alcohol . If melted , which takes place ...
Pàgina 38
... solution of the anthracen .. It dissolves gradually as it is converted into the dihydride , which is much more soluble in alcohol . Anthracen is heated with about 10 parts of alcohol at 95 per cent . in a flask with an ascending con ...
... solution of the anthracen .. It dissolves gradually as it is converted into the dihydride , which is much more soluble in alcohol . Anthracen is heated with about 10 parts of alcohol at 95 per cent . in a flask with an ascending con ...
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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