AT226360B - Process for stabilizing aqueous solutions of iodine-alkali iodide - Google Patents

Process for stabilizing aqueous solutions of iodine-alkali iodide

Info

Publication number
AT226360B
AT226360B AT614661A AT614661A AT226360B AT 226360 B AT226360 B AT 226360B AT 614661 A AT614661 A AT 614661A AT 614661 A AT614661 A AT 614661A AT 226360 B AT226360 B AT 226360B
Authority
AT
Austria
Prior art keywords
iodine
aqueous solutions
iodide
alkali iodide
stabilizing aqueous
Prior art date
Application number
AT614661A
Other languages
German (de)
Original Assignee
Globopharm Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Globopharm Ag filed Critical Globopharm Ag
Application granted granted Critical
Publication of AT226360B publication Critical patent/AT226360B/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/05Isotopically modified compounds, e.g. labelled

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

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  Verfahren zur Stabilisierung wässeriger Lösungen von Jod-Alkalijodid 
Die Erfindung betrifft ein Verfahren zur Stabilisierung wässeriger Lösungen von Jod-Alkalijodid. 



   Es ist bekannt, dass sich Jod in Gegenwart von Alkalijodiden in erheblichen Mengen in Wasser auflöst. Durch Bestimmung der Gefrierpunktserniedrigung wurde von Leblanc und Noyes bewiesen, dass dabei alles Jod chemisch als Polyjodid gebunden wird. Für verdünnte Lösungen konnte Jakovkin eine gute Konstanz für die thermolytische Dissoziation von   KJ   in KJ +   J1   erhalten, so dass daraus auf das Vorhandensein des Anions J'geschlossen werden musste.

   Dawsen und Gawler sowie Dawsen und Goodsen konnten in konzentrierteren wässerigen Lösungen auch die Existenz höherer Alkalipolyjodide, so der Enneajodide   (J')   
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 in ionisiertem Zustand als in reinem Wasser, so dass eine bemerkenswerte Verbesserung der Stabilität der Lösung und damit eine beträchtliche Verminderung des Jodverlustes erreicht wird. Als Alkalijodid wird vorzugsweise Li-, Na-,   K-oderNH. Jödid   verwendet. Es können aber auch andere Jodide verwendet werden. 



   Beispiel : 4 g Jod und 8 g Na-Jodid werden in bekannter Weise zu 200 ml Wasser gelöst. Nach Beendigung des Vorganges wird die Lösung mitBenzylalkohol bis zu einer Konzentration von   2%   versetzt und kräftig durchgemischt, wobei die bei der Auflösung des Jods in Wasser in Gegenwart von Na-Jodid gebildeten Polyjodidionen zum Teil in den Benzylalkohol übertreten. Eine auf diese Weise zubereitete Lösung zeichnet sich gegenüber einer normalen wässerigen Kontrollösung gleicher Konzentration durch eine erhebliche Verbesserung der Stabilität aus. 



   PATENTANSPRÜCHE :   l.   Verfahren zur Stabilisierung wässeriger Lösungen von Jod-Alkalijodid, dadurch gekennzeichnet, dass man dem in Wasser gelösten Jod-Alkalijodid Benzylalkohol in Konzentrationen von 0, 5 bis 2, 9% zugibt. 
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  Process for stabilizing aqueous solutions of iodine-alkali iodide
The invention relates to a method for stabilizing aqueous solutions of iodine-alkali iodide.



   It is known that iodine dissolves in water in significant quantities in the presence of alkali iodides. By determining the lowering of the freezing point, Leblanc and Noyes proved that all iodine is chemically bound as polyiodide. For dilute solutions Jakovkin was able to obtain good constancy for the thermolytic dissociation of KJ into KJ + J1, so that the presence of the anion J 'had to be deduced from this.

   Dawsen and Gawler as well as Dawsen and Goodsen could in more concentrated aqueous solutions also the existence of higher alkali polyiodides, so the Ennea iodide (J ')
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 in the ionized state than in pure water, so that a remarkable improvement in the stability of the solution and thus a considerable reduction in iodine loss is achieved. The alkali iodide is preferably Li, Na, K or NH. Jödid used. However, other iodides can also be used.



   Example: 4 g of iodine and 8 g of sodium iodide are dissolved in a known manner in 200 ml of water. When the process is complete, benzyl alcohol is added to the solution up to a concentration of 2% and vigorously mixed, some of the polyiodide ions formed when the iodine is dissolved in water in the presence of sodium iodide migrate into the benzyl alcohol. A solution prepared in this way is distinguished by a considerable improvement in stability compared to a normal aqueous control solution of the same concentration.



   PATENT CLAIMS: l. Process for stabilizing aqueous solutions of iodine-alkali iodide, characterized in that benzyl alcohol is added to the iodine-alkali iodide dissolved in water in concentrations of 0.5 to 2.9%.
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Claims (1)

NH.-Jodid verwendet wird. NH.-iodide is used. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Alkalijodid Na-Jodid verwendet wird und der Lösung Benzylalkohol in einer Konzentration von 2% zugegeben wird. 3. The method according to claim 1, characterized in that Na iodide is used as the alkali iodide and benzyl alcohol is added to the solution in a concentration of 2%.
AT614661A 1960-08-11 1961-08-08 Process for stabilizing aqueous solutions of iodine-alkali iodide AT226360B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH226360X 1960-08-11

Publications (1)

Publication Number Publication Date
AT226360B true AT226360B (en) 1963-03-11

Family

ID=4454516

Family Applications (1)

Application Number Title Priority Date Filing Date
AT614661A AT226360B (en) 1960-08-11 1961-08-08 Process for stabilizing aqueous solutions of iodine-alkali iodide

Country Status (1)

Country Link
AT (1) AT226360B (en)

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