Anthracen, tr. and ed. by W. Crookes1877 |
Des de l'interior del llibre
Resultats 1 - 5 de 35.
Pàgina 16
... remains , the oils obtained yield little or no anthracen . If the distillation is pushed so far as to produce 10 or 15 per cent . more oil , a hard pitch remains , of little or no value ; whilst the anthracen obtained , accord- ing to ...
... remains , the oils obtained yield little or no anthracen . If the distillation is pushed so far as to produce 10 or 15 per cent . more oil , a hard pitch remains , of little or no value ; whilst the anthracen obtained , accord- ing to ...
Pàgina 18
... remains fluid on cooling , it is col- lected in another receiver , and used as a liquid lubricant . After a time the distillate , on cooling , no longer remains fluid , but assumes a thick , paste - like consistence , due to the ...
... remains fluid on cooling , it is col- lected in another receiver , and used as a liquid lubricant . After a time the distillate , on cooling , no longer remains fluid , but assumes a thick , paste - like consistence , due to the ...
Pàgina 19
... remains behind in the soft pitch . In this soft pitch , obtained from the gas - works of Turin , Kopp found considerable quantities of anthracen ( 4 to 6 per cent . ) . At the present price of this article it would be re- munerative to ...
... remains behind in the soft pitch . In this soft pitch , obtained from the gas - works of Turin , Kopp found considerable quantities of anthracen ( 4 to 6 per cent . ) . At the present price of this article it would be re- munerative to ...
Pàgina 26
... remains in the retort a wax- like substance which takes fire on exposure to the air , and deposits on colder parts a white sublimate of carbazol . The distillate of anthracen forms solid yellow pieces , containing about 40 per cent . of ...
... remains in the retort a wax- like substance which takes fire on exposure to the air , and deposits on colder parts a white sublimate of carbazol . The distillate of anthracen forms solid yellow pieces , containing about 40 per cent . of ...
Pàgina 38
... remains in solution is obtained by distilling off the alcohol , and washing with water . The product thus prepared has its melting - point at 106 ° , and further purification by crystallisation from alcohol is rarely requisite ...
... remains in solution is obtained by distilling off the alcohol , and washing with water . The product thus prepared has its melting - point at 106 ° , and further purification by crystallisation from alcohol is rarely requisite ...
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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