File:Image from page 131 of "Practical methods of organic chemistry" (1901) (14748638596).jpg
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[edit]DescriptionImage from page 131 of "Practical methods of organic chemistry" (1901) (14748638596).jpg |
Identifier: practicalmethods00gatt Title: Practical methods of organic chemistry Year: 1901 (1900s) Authors: Gattemann, Ludwig. [from old catalog] Subjects: Publisher: [n.p.] Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress
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Text Appearing After Image: ALIPHATIC SERIES 113 denser, this difficulty may be overcome by placing the receiverin such a position that the end of the adapter reaches just belowthe surface of the water. The same result may be attained by turn-ing the adapter to one side, so that air may enter it. The lowerlayer of the distillate consisting of ethyl bromide is washed in thereceiver several times with water, and finally with a dilute solutionof sodium carbonate, during which the flask must not be closed.The lower layer is then run out of a separating funnel, dried withcalcium chloride, and finally distilled, the same precautions as tocooling, mentioned above, being observed. In this case, the freeflame is not used for the heating, but the bulb of the fractionatingflask is immersed in a vessel filled with water at 60-700 (comparepage 22). The ethyl bromide distils between 35-400, the mainportion at 38-390. In consequence of the low boiling-point ofethyl bromide, it is never allowed to stand in open vessels for anyl
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Source | Image from page 131 of "Practical methods of organic chemistry" (1901) |
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