The Owens College Course of Practical Organic ChemistryMacmillan and Company, 1892 - 200 páginas |
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Términos y frases comunes
50 grms absolute alcohol acetic acid action alcohol radicals aldehyde alkaline alloxantin amines ammonia ammonium anhydride anhydrous aniline aqueous solution aromatic atom benzaldehyde benzene benzoic acid benzyl boiling calcium chloride caustic potash chloroform colour compound conc contained cooling decomposes dilute dissolved distilled easily soluble ethyl bromide Ethylene evaporated evolution fatty Fifty grms filtered filtrate Fittig formed formic acid fraction fuming nitric acid glycerin grms H₂O halogen heated hot water hundred grms hydrocarbons hydrochloric acid hydroxyl layer litre capacity mesitylene mixture monochloracetic acid nitric acid nitrobenzene oxalic acid oxidation oxidising Pharm phenol phosphorus Phys portion potassium carbonate potassium cyanide powdered precipitate Prep PREPARATION Properties.-Colourless liquid purified reaction readily reflux condenser replaced residue retort round-bottomed flask salt separates shaken side-chain slowly added small quantity smell sodium solidifies soluble in alcohol soluble in water sulphate sulphuric acid temperature thermometer tube vessel washed water-bath yellow
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Página 31 - ... heated four or five hours at 170°. The gas which escaped on opening the tubes was found to contain no methyl chloride. The excess of acid was driven off on the water bath, and the residue distilled with plumbic hydrate until the distillate was no longer alkaline. The ammoniacal distillate was caught in hydrochloric acid, and evaporated to dryness on the water bath. The residue was treated with a small quantity of absolute alcohol, and the filtered solution again evaporated to dryness. There...
Página 74 - Special care must be taken that the temperature of the liquid does not exceed 10° C.
Página 158 - ... from a funnel, the neck of which is drawn out into a fine tube, so that two layers are formed. The whole is allowed to stand at the ordinary temperature, till after some little time the liquid becomes homogeneous. The contents of several (six) such cylinders are slowly evaporated on...
Página 102 - The distilling flask is now attached to a long condenser and heated on the water-bath. The ether, which distils, still contains traces of alcohol and water, which it obstinately retains and from which it can only be freed by a further treatment with metallic sodium. A few very thin slices of sodium are dropped into the receiver and the vessel closed with a cork, through which...
Página 61 - ... decomposition taking place. This liquid was then redistilled near the same temperature. The liquid base thus prepared has a curious smell closely resembling that of Bewad's triethylhydroxylamine. Its general properties agree very closely with the diethyl- and dipropyl-hydroxylamines. It is soluble in water and miscible in all proportions with alcohol and ether ; the aqueous solution is strongly alkaline to litmus, and fumes in contact with hydrochloric acid. It reacts with solutions of copper...
Página 177 - This reaction has been made the basis of a quantitative method for determining the number of methoxyl-groups ( - OCH3) present in a compound.
Página 108 - ... hydrate, to which solid potash, or soda, is added. A crystalline phenate of potassium or sodium is formed; this is dissolved in boiling water, the insoluble oil that floats is separated, and the alkaline solution is neutralized with hydrochloric acid, whereupon the phenol separates. It is collected, washed with a small quantity of water, dehydrated with calcium chloride, and rectified by distillation. The distilled product is cooled to — 10°, and the crystals deposited are allowed to drain...
Página 103 - ... settles to the bottom as a heavy oil. The chloroform is freed from alcohol by shaking with water and dehydrated over calcium chloride. It is finally rectified on the water-bath.
Página 101 - A bent tube passing through the third hole connects the flask with a long condenser and receiver, both of which must be kept well cooled during the operation.