The Owens College Course of Practical Organic ChemistryMacmillan, 1887 - 200 páginas |
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Página 11
... readily counted . Collect the distillate between every five degrees in separate flasks . Redistil each of these fractions in order , adding the next to the residue of the previous one in the distilling flask , and collect portions ...
... readily counted . Collect the distillate between every five degrees in separate flasks . Redistil each of these fractions in order , adding the next to the residue of the previous one in the distilling flask , and collect portions ...
Página 25
... readily observed . The substance is allowed to cool and is reheated . In this way the freezing and melting - points ( uncorrected ) 1 may be repeatedly determined . The substance , if pure , melts completely and suddenly within one or ...
... readily observed . The substance is allowed to cool and is reheated . In this way the freezing and melting - points ( uncorrected ) 1 may be repeatedly determined . The substance , if pure , melts completely and suddenly within one or ...
Página 27
... readily soluble . To the hot alcoholic solution water is added until a cloudiness appears . On shaking , drops of red oil collect from which the liquid is filtered through a moistened filter . The clear filtrate on cooling deposits ...
... readily soluble . To the hot alcoholic solution water is added until a cloudiness appears . On shaking , drops of red oil collect from which the liquid is filtered through a moistened filter . The clear filtrate on cooling deposits ...
Página 32
... readily dissolves the hydrobromides , and then excess of caustic potash solution . The free bases separate out as a dark brown oily layer on the surface of the liquid . The aqueous portion is carefully separated and extracted with ether ...
... readily dissolves the hydrobromides , and then excess of caustic potash solution . The free bases separate out as a dark brown oily layer on the surface of the liquid . The aqueous portion is carefully separated and extracted with ether ...
Página 46
... readily in hot water ; the solution has a bitter taste . Heated gently with 2 parts of potassium cyanide in a dilute solution a brown crystalline precipitate of isopurpuric acid separates on cooling . PREPARATION XVII . PHENOLPHTHALEINE ...
... readily in hot water ; the solution has a bitter taste . Heated gently with 2 parts of potassium cyanide in a dilute solution a brown crystalline precipitate of isopurpuric acid separates on cooling . PREPARATION XVII . PHENOLPHTHALEINE ...
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Términos y frases comunes
50 grms absolute alcohol acetic acid action aldehyde allyl ammonia ammonium anhydrous aniline aromatic Assistant-Master atom benzaldehyde benzene benzoic acid benzoyl chloride benzyl boiling calcium chloride Cambridge caustic potash caustic soda chloroform cold colour colourless compound conc containing cooling Crown 8vo crystals decomposes dilute dissolved distilled ELEMENTARY ethylene bromide evolution Extra fcap fatty Fcap Fellow of Trinity Fifty grms filtered filtrate Fittig formed fumes Globe 8vo glycerin Greek grms H₂O heated hot water hundred grms hydrochloric acid hydrogen iodide John's College late Fellow layer litre capacity LL.D mesitylene mixture nitric acid oxalic acid Pharm phenol phosphorus Phys potassium carbonate potassium cyanide powdered Prep PREPARATION PRIMER Professor Properties.-Colourless liquid purified reaction reflux condenser residue retort revised round-bottomed flask salt School separated slowly added small quantity soda solution sodium solidifies soluble in water sulphuric acid temperature Trinity College tube vessel washed water-bath
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