File:Image from page 344 of "Practical methods of organic chemistry" (1901) (14585017468).jpg
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[edit]DescriptionImage from page 344 of "Practical methods of organic chemistry" (1901) (14585017468).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 View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: ' Text Appearing After Image: Fig. 79. Fig. 80. purpose is the Winckler form; since it possesses no cock, it canbe inserted into the body of a flask with a not too narrow neck,and by this manipulation the disagreeable bromine vapours maybe avoided (Fig. 79). In the above case, n c.c. of bromineare necessary. On the addition of bromine, it is observed that thequantity of fluorescein insoluble in alcohol steadily decreases, andthat when about one-half of the bromine has been added, a clear,dark, reddish-brown solution is formed. This is due to the factthat the dibromide is first formed, which is easily soluble in 326 SPECIAL PART alcohol. On the further addition of bromine, the tetra-bromideis formed, which, since it is difficultly soluble in alcohol, separatesout in the form of brick-red leaflets. After all the bromine hasbeen added, the reaction-mixture is allowed to stand for 2 hours,the precipitate is filtered off, washed several times with alcohol,and dried on the water-bath. The product thus obtained is acompo Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. |
Source | Image from page 344 of "Practical methods of organic chemistry" (1901) |
Author | Internet Archive Book Images |
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19 February 2016
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