The Owens College Course of Practical Organic ChemistryMacmillan, 1887 - 200 σελίδες |
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Σελίδα 18
... washed free from acid by shaking repeatedly with water , then with dilute carbonate of FIG . II . The soda solution , and again with water , the oil being each time withdrawn from the bottom of the vessel . nitrobenzene , separated as ...
... washed free from acid by shaking repeatedly with water , then with dilute carbonate of FIG . II . The soda solution , and again with water , the oil being each time withdrawn from the bottom of the vessel . nitrobenzene , separated as ...
Σελίδα 26
... washed once or twice with cold water . The filtrate , which has a red colour and contains the chief portion of the ortho - compound , is removed , the residue is again washed with water , well pressed , and dried at 100 ° . In order to ...
... washed once or twice with cold water . The filtrate , which has a red colour and contains the chief portion of the ortho - compound , is removed , the residue is again washed with water , well pressed , and dried at 100 ° . In order to ...
Σελίδα 27
Julius Berend Cohen. dried substance is powdered and washed with cold chloroform until the washings are nearly colourless . The residue on the filter has a light yellow colour , and crystallises from alcohol in almost colourless needles ...
Julius Berend Cohen. dried substance is powdered and washed with cold chloroform until the washings are nearly colourless . The residue on the filter has a light yellow colour , and crystallises from alcohol in almost colourless needles ...
Σελίδα 29
... washed with water on the filter - pump . It is then recrystallised from hot dilute alcohol . On cooling the alcoholic solution , meta - dinitrobenzene crystallises out in light yellow needles , and is free from its isomers , which ...
... washed with water on the filter - pump . It is then recrystallised from hot dilute alcohol . On cooling the alcoholic solution , meta - dinitrobenzene crystallises out in light yellow needles , and is free from its isomers , which ...
Σελίδα 32
... washed with small quantities of cold and very dilute sulphuric acid . The filtrate contains the diethylaniline . The cry- stalline residue consists of the acetyl compounds of aniline and monoethylaniline.1 The filtrate is made alkaline ...
... washed with small quantities of cold and very dilute sulphuric acid . The filtrate contains the diethylaniline . The cry- stalline residue consists of the acetyl compounds of aniline and monoethylaniline.1 The filtrate is made alkaline ...
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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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