Anthracen, tr. and ed. by W. Crookes1877 |
Des de l'interior del llibre
Resultats 1 - 5 de 55.
Pàgina 35
... concentrated 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 ...
... concentrated 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 ...
Pàgina 36
... ( Fritzsche's reagent , or oxybinitrophoten ) . If treated with concentrated sulphuric acid , there is formed sulphanthracenic acid , C1H , ( SHO , ) , whose lead salt 14 C1 , H , SO3Pb C1H , SO , 36 ANTHRACEN . Reactions of Anthracen.
... ( Fritzsche's reagent , or oxybinitrophoten ) . If treated with concentrated sulphuric acid , there is formed sulphanthracenic acid , C1H , ( SHO , ) , whose lead salt 14 C1 , H , SO3Pb C1H , SO , 36 ANTHRACEN . Reactions of Anthracen.
Pàgina 45
... concentrated nitric acid or by adding chromic acid to a solution of bibromanthracen in glacial acetic acid . Heat is applied in either case as long as bromine is evolved , the mixture is diluted with water , the deposited mass is washed ...
... concentrated nitric acid or by adding chromic acid to a solution of bibromanthracen in glacial acetic acid . Heat is applied in either case as long as bromine is evolved , the mixture is diluted with water , the deposited mass is washed ...
Pàgina 48
... concentrated aqueous solution of to part of hydrate of potassa is added . The colourless mass is immediately converted into yellow tetrabromanthracen , with a great in- crease of volume . In its properties it agrees with Ander- son's ...
... concentrated aqueous solution of to part of hydrate of potassa is added . The colourless mass is immediately converted into yellow tetrabromanthracen , with a great in- crease of volume . In its properties it agrees with Ander- son's ...
Pàgina 57
... water in white flocks , which , when dry , become gradually yellow on prolonged exposure to the air . Concentrated or fuming nitric acid dissolves methylanthracen slowly in the cold , but METHYLANTHRACEN . 57 Methylanthracen 57.
... water in white flocks , which , when dry , become gradually yellow on prolonged exposure to the air . Concentrated or fuming nitric acid dissolves methylanthracen slowly in the cold , but METHYLANTHRACEN . 57 Methylanthracen 57.
Frases i termes més freqüents
according action added addition alcohol alizarin alkali allowed ammonia anthracen anthraquinon appears atoms baryta becomes benzol blue body boiling bromine brown carbon cent Chem Chemie chloride chromic chrysammic cold colour complete compound concentrated contains converted cooling Crown 8vo crystallises crystals decomposed deposited derivatives deutsch dilute dissolves distillation dried dyes easily Edition ether evaporation excess extracted filtered filtrate flocks formation formed formula Gesellsch glacial acetic acid Graebe and Liebermann grms heated History hydrate hydrocarbons hydrochloric acid hydrogen insoluble latter lead less lime liquid madder mass melting method mixed mixture needles nitric acid obtained oxidation oxidising passes Pharm potash potassa powder precipitate preparation pure purpurin quantity quinon reaction readily reduced remains removed residue salt separated soda soluble solution sparingly soluble sublimes substance sulphuric acid takes temperature tion treated tube violet vols washed whilst Woodcuts yellow yields
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