Quarterly Journal of the Chemical Society of London |
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Results 1-3 of 82
Page 1480
... distilled off , and acetone was added to the residue , whereupon the hydrochloride crystallised . Recrystal- lised from chloroform - acetone it melted at 193-195 ° ( Found : Cl ' , 12.0 . CH1 , NCI , requires Cl ' , 12.0 % ) . 19 3 ...
... distilled off , and acetone was added to the residue , whereupon the hydrochloride crystallised . Recrystal- lised from chloroform - acetone it melted at 193-195 ° ( Found : Cl ' , 12.0 . CH1 , NCI , requires Cl ' , 12.0 % ) . 19 3 ...
Page 1499
... distilled in vacuo in the laboratory can be shown by the change in colour when a sample is shaken with a small proportion of aqueous neutral 5 % hydroxylamine hydrochloride solution containing methyl - orange . The best styrene samples ...
... distilled in vacuo in the laboratory can be shown by the change in colour when a sample is shaken with a small proportion of aqueous neutral 5 % hydroxylamine hydrochloride solution containing methyl - orange . The best styrene samples ...
Page 1502
... distilled water containing N / 100 - copper sulphate in 1 % acetic acid ( 0-18 ml . ) and N - sodium hydroxide ( 2.0 ml . ) were added . The solution was left overnight in contact with purified hydrogen . The styrene was first boiled ...
... distilled water containing N / 100 - copper sulphate in 1 % acetic acid ( 0-18 ml . ) and N - sodium hydroxide ( 2.0 ml . ) were added . The solution was left overnight in contact with purified hydrogen . The styrene was first boiled ...
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Common terms and phrases
absorption acetic anhydride acetone acetyl added alcohol alkaline alunite Amer amine ammonia anhydrous anilide aqueous sodium atom benzene boiling bromine trifluoride Calc carbonate CH₂ Chem chloroform colour colourless needles compound condensation containing cooled crystallised crystals cyanide cyclisation D.Sc decomp derivatives dilute dissolved distilled dried equiv ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtered filtrate fluoride formation formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated kcals ketone light petroleum b. p. liquid melting method methyl minutes mixed m. p. molecule nitrate nitrile nitrogen obtained oxalate oxide oxime oxygen pickeringite picrate piperidine potassium potassium hydroxide precipitate prepared prisms pyridine reductive dissolution removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid soluble solvent specimen sulphate sulphuric acid values washed xylose yellow needles yield