AT53455B - Process for the preparation of tin tetrachloride from tin dioxide. - Google Patents

Process for the preparation of tin tetrachloride from tin dioxide.

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Publication number
AT53455B
AT53455B AT53455DA AT53455B AT 53455 B AT53455 B AT 53455B AT 53455D A AT53455D A AT 53455DA AT 53455 B AT53455 B AT 53455B
Authority
AT
Austria
Prior art keywords
tin
preparation
tetrachloride
dioxide
tin dioxide
Prior art date
Application number
Other languages
German (de)
Inventor
Fritz Dr Braeunlich
Original Assignee
Fritz Dr Braeunlich
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 Fritz Dr Braeunlich filed Critical Fritz Dr Braeunlich
Application granted granted Critical
Publication of AT53455B publication Critical patent/AT53455B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  VerfahrenzurDarstellungvonZinntetrachloridausZinndioxyd. 



   Es hat sich gezeigt, dass Zinndioxyd in glatter Weise in Zinntetrachlorid übergeführt werden kann, wenn es mit Kalziumkarbid innig gemischt, bei höherer Temperatur der Einwirkung von trockenem Chlorgas ausgesetzt wird. Die Reaktion vollzieht sich bei ver.   hiiltnismässig   niedriger Temperatur, 170 bis 2000, und scheint es hiebei zur Bildung eines   811     C. Ca C-Doppelsalzes   zu kommen, aus welchem das Sn   C l4   entweder durch Destillation oder auf dem Wege einer chemischen Umsetzung abgeschieden werden kann. Die Bildung des Zinntetrachlorid erfolgt quantitativ. 



   Zur Ausführung des Verfahrens wird Zinndioxyd, z. B. Zinnpaste aus den Seiden-   färbereien   oder das natürlich vorkommende Sn   O2 (Kassiterit),   in trockenem Zustande mit 
 EMI1.1 
 bei einer Temperatur von zirka 2000 der Einwirkung eines darüber streichenden trockenen   Chlorstromes   bis zur vollkommenen Sättigung mit Chlorgas ausgesetzt. Aus dem erhaltenen Reaktionsgemisch kann das Sn Cl4 auf folgende Weise abgeschieden werden :
1. Durch direktes Abdestillieren beim weiteren Erhitzen des Reaktionsgemisches. 



  Eventuell kann dabei die Abscheidung des   S} durch   die umsetzende Wirkung eines Zusatzes von primären oder sekundären Sulfaten erleichtert werden ;
2. durch   Destillation über konzentrierte Schwefelsäure   ;
3. durch Umsetzung des in dem Reaktionsgemisch vermutlich enthaltenen Sn   Cl,.     Col2-   Doppelsalzes zu dem technisch verwertbaren Sn Cl4.2 NH4Cl (Pinksalz). 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of tin tetrachloride from tin dioxide.



   It has been shown that tin dioxide can be converted smoothly to tin tetrachloride when it is intimately mixed with calcium carbide, exposed to the action of dry chlorine gas at a higher temperature. The reaction takes place at a relatively low temperature, 170 to 2000, and appears to result in the formation of a 811 C. Ca C double salt, from which the Sn C 14 is separated either by distillation or by chemical conversion can. The tin tetrachloride is formed quantitatively.



   To carry out the process, tin dioxide, e.g. B. tin paste from the silk dye works or the naturally occurring Sn O2 (cassiterite), in a dry state with
 EMI1.1
 exposed at a temperature of about 2000 to the action of a dry chlorine stream sweeping over it until it is completely saturated with chlorine gas. The Sn Cl4 can be deposited from the reaction mixture obtained in the following way:
1. By direct distillation as the reaction mixture continues to be heated.



  The separation of the S} can possibly be facilitated by the converting effect of an addition of primary or secondary sulfates;
2. by distillation over concentrated sulfuric acid;
3. by reacting the Sn Cl, presumably contained in the reaction mixture. Col2 double salt to the technically usable Sn Cl4.2 NH4Cl (pink salt).

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

 

Claims (1)

EMI1.2 Verfahren zur Herstellung von Zinntetrachlorid aus Zinndioxyd, dadurch gekennzeichnet, dass Zinndioxyd im trockenen Zustand mit Kalziumkarbid gemischt, bei einer Temperatur von zirka 2000 C der Einwirkung von trockenem Chlorgas ausgesetzt wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. EMI1.2 Process for the production of tin tetrachloride from tin dioxide, characterized in that tin dioxide mixed with calcium carbide in the dry state is exposed to the action of dry chlorine gas at a temperature of about 2000 C. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT53455D 1910-11-30 1910-11-30 Process for the preparation of tin tetrachloride from tin dioxide. AT53455B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT53455T 1910-11-30

Publications (1)

Publication Number Publication Date
AT53455B true AT53455B (en) 1912-05-10

Family

ID=3574764

Family Applications (1)

Application Number Title Priority Date Filing Date
AT53455D AT53455B (en) 1910-11-30 1910-11-30 Process for the preparation of tin tetrachloride from tin dioxide.

Country Status (1)

Country Link
AT (1) AT53455B (en)

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