AT85031B - Process for the preparation of basic tannic aluminum. - Google Patents

Process for the preparation of basic tannic aluminum.

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Publication number
AT85031B
AT85031B AT85031DA AT85031B AT 85031 B AT85031 B AT 85031B AT 85031D A AT85031D A AT 85031DA AT 85031 B AT85031 B AT 85031B
Authority
AT
Austria
Prior art keywords
aluminum
tannic
preparation
basic
added
Prior art date
Application number
Other languages
German (de)
Original Assignee
Chem Fab Vorm E Schering
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 Chem Fab Vorm E Schering filed Critical Chem Fab Vorm E Schering
Application granted granted Critical
Publication of AT85031B publication Critical patent/AT85031B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von basisch gerbsaurem Aluminium. 



   Vorliegende Erfindung betrifft ein Verfahren zur Darstellung eines neuen basisch gerbsauren Aluminiums, das darin besteht, dass man eine   Ätzalkalitannatlösung   mit einem Aluminiumsalz versetzt und Ätzalkali in solchen Mengen zufügt, dass Neutralisation nicht eintritt. 



   Die neue Verbindung soll zu therapeutischen Zwecken Verwendung finden. Sie ent- 
 EMI1.1 
 graues, geruch-und geschmackloses Pulver dar, das in kaltem Wasser unlöslich, in Säuren und Alkalien löslich isti In Salzsäure von der Konzentration des Magensaftes ist die Verbindung völlig unlöslich,
Beispiel :
500 g Tannin werden mit einer Lösung von'50 g Na OH in   800   cm3 Wasser gelöst. Hierzu gibt man eine Lösung von   500   g Aluminiumsulfat in 500 cm3 Wasser. Der in geringer Menge sich bildende Niederschlag wird bei Zusatz von   450 c'W 10 %   NaOH-Lösung beträchtlich vermehrt. Beim Versetzen mit i bis 2   I   Wasser scheidet sich das gebildete Aluminiumtannat gut ab und lässt sich bequem abnutschen. 



   Dieses Verfahren ist auch durchaus verschieden von dem bekannten Verfahren zur Herstellung eines basisch gerbsauren Aluminiums, wonach man eine Aluminiumsulfatlösung durch eine Gerbsäurelösung fällt, die durch Ammoniakflüssigkeit annähernd neutral gehalten wird. Nach diesem bekannten Verfahren erhält man auch eine Verbindung, die sich von der nach vorliegendem Verfahren gewonnenen scharf unterscheidet. Die erstere ist ein bräunliches Pulver mit   5'78 %   Aluminiumgehalt, das in der Therapie nur äusserliche Anwendung gefunden hat, während die Verbindung gemäss dem vorliegenden Verfahren ein graues Pulver mit   go   Aluminiumgehalt darstellt, das sich vorzüglich als Antidiarrhoicum eignet. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of basic tannic aluminum.



   The present invention relates to a method for the preparation of a new basic tannic aluminum, which consists in adding an aluminum salt to a caustic alkali metal solution and adding caustic alkali in such amounts that neutralization does not occur.



   The new compound is intended to be used for therapeutic purposes. You develop
 EMI1.1
 gray, odorless and tasteless powder, which is insoluble in cold water, soluble in acids and alkalisi in hydrochloric acid from the concentration of gastric juice, the compound is completely insoluble,
Example:
500 g of tannin are dissolved with a solution of 50 g of Na OH in 800 cm3 of water. A solution of 500 g of aluminum sulfate in 500 cm3 of water is added to this. The small amount of precipitate that forms is increased considerably when 450 cW 10% NaOH solution is added. When 1 to 2 liters of water are added, the aluminum tannate formed separates out well and can be conveniently suctioned off.



   This process is also quite different from the known process for the production of a basic tannic aluminum, according to which an aluminum sulfate solution is passed through a tannic acid solution which is kept approximately neutral by ammonia liquid. This known method also gives a compound which differs sharply from that obtained by the present method. The former is a brownish powder with 5'78% aluminum content, which has only been used externally in therapy, while the compound according to the present method is a gray powder with an aluminum content that is ideally suited as an antidiarrheal.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von basisch gerbsaurem Aluminium, dadurch gekennzeichnet, dass man eine Ätzalkalitannatlösung mit einem Aluminiumsalz versetzt und Ätzalkali in solchen Mengen zufügt, dass Neutralisation nicht eintritt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of basic aluminum with tannic acid, characterized in that an aluminum salt is added to a caustic alkali metal solution and caustic alkali is added in such amounts that neutralization does not occur. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT85031D 1918-07-17 1919-06-12 Process for the preparation of basic tannic aluminum. AT85031B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE85031X 1918-07-17

Publications (1)

Publication Number Publication Date
AT85031B true AT85031B (en) 1921-08-10

Family

ID=5640664

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85031D AT85031B (en) 1918-07-17 1919-06-12 Process for the preparation of basic tannic aluminum.

Country Status (1)

Country Link
AT (1) AT85031B (en)

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