File:The treatment of syphilis (1920) (14593943608).jpg

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Identifier: treatmentofsyph00bake (find matches)
Title: The treatment of syphilis
Year: 1920 (1920s)
Authors: Baketel, Harrie Sheridan, 1872-
Subjects: Syphilis
Publisher: New York The Macmillan Company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ct of maximum stability, it must becarefully dried in high vacuum, and all subsequent operationsconducted in an atmosphere of inert gas. There appears to be some doubt as to whether such carefulprecautions are really necessary and it is possible that a purearsphenamine, particularly after moisture and solvents havebeen removed, is a very much more stable substance than ap-pears from some of the literature on the subject. There is nodoubt, however, that in view of the nature of the material andthe use to which it is put, the best method of procedure is toadopt every possible precaution in the manufacture, even atthe risk of overdoing it. Explanatory Diagrammatic Outline The large number of proposed chemical procedures for thepreparation of arsphenamine and its intermediates is outlined inthe following charts, which show the chemical relationship of thevarious substances to the final product, arsphenamine. o: ?ofi ~ 0=! r** * = -fOfl o«i !04 k^I cxoioj o*i ?
Text Appearing After Image:
Oi §4 HISTORY AND CHEMISTRY OF ARSPHENAMINE 19 It would appear that every conceivable avenue of approachhas been utilized for the preparation of arsphenamine. It isprobable, however that only a few of these proposed methodshave been applied to practical production of the material. Thevalue of any single method can only be judged by extensivestudy and application to the production of material which issatisfactory chemically, therapeutically and economically. The considerable physical and chemical variations in differentbrands of arsphenamine as now obtainable, indicate that theprocesses used by different manufacturers vary to some extenteither in principle or method of manipulation. Color and solubil-ity in solvents, particularly in methyl alcohol, and the ease withwhich the material forms aqueous solutions differ decidedly withdifferent brands. The arsenic content varies from about 29 toabout 33 per cent. Since the theoretical arsenic content of purearsphenamine is 34.2 per cent, thetreatmentofsyph00bake

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Flickr tags
InfoField
  • bookid:treatmentofsyph00bake
  • bookyear:1920
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:Baketel__Harrie_Sheridan__1872_
  • booksubject:Syphilis
  • bookpublisher:New_York_The_Macmillan_Company
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:37
  • bookcollection:library_of_congress
  • bookcollection:americana
Flickr posted date
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29 July 2014

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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14593943608. It was reviewed on 17 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

17 September 2015

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current08:03, 4 April 2016Thumbnail for version as of 08:03, 4 April 20162,624 × 1,640 (647 KB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
07:02, 17 September 2015Thumbnail for version as of 07:02, 17 September 20151,640 × 2,624 (636 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': treatmentofsyph00bake ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Ftreatmentofsyph0...

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