AT70646B - Process for the preparation of alizarin. - Google Patents

Process for the preparation of alizarin.

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Publication number
AT70646B
AT70646B AT70646DA AT70646B AT 70646 B AT70646 B AT 70646B AT 70646D A AT70646D A AT 70646DA AT 70646 B AT70646 B AT 70646B
Authority
AT
Austria
Prior art keywords
alizarin
preparation
parts
desc
nitroanthrone
Prior art date
Application number
Other languages
German (de)
Original Assignee
Griesheim Elektron Chem Fab
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 Griesheim Elektron Chem Fab filed Critical Griesheim Elektron Chem Fab
Application granted granted Critical
Publication of AT70646B publication Critical patent/AT70646B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Alizarin. 
 EMI1.1 
 technischen Anthrazen aus über ein   einfach darzustellendes Zwischenprodukt Alizarin   herzustellen. 



  Die umständliche Darstellung und   Reinigung   von Anthrachinon und Anthrachinonsulfosäuren fällt fort. Es lassen sich natürlich mit Vorteil auch Gemische der ms-Nitrierungsprodukte verwenden. So ist z. B. das Gemisch von   Dihydrodinitroanthrazen   und Nitroanthron, das nach   Meisenheimer (Annalen   der Chemie 330. Seite 163) durch Einwirkung   von überschüssiger Salpeter-   säure auf in Eisessig suspendiertes Anthrazen erhalten wird. hervorragend zur Darstellung von 
 EMI1.2 
 



   Beispiel 11. 



   40 Teile Nitroanthron, 134   Teile kaustische Soda, 16#5 Teile Chilisalpeter,   32 Teile Kalk.   G4   Teile   Natriumbisulfitlauge, neutralisiert mit 28 Teilen Natronla@ge 35  Bé und 581 Teile Wasser   
 EMI1.3 
 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of alizarin.
 EMI1.1
 to produce technical anthracene from alizarin, an intermediate that is easy to prepare.



  The laborious preparation and purification of anthraquinone and anthraquinone sulfonic acids is no longer necessary. Mixtures of the ms nitration products can of course also be used with advantage. So is z. B. the mixture of dihydrodinitroanthracene and nitroanthrone, which according to Meisenheimer (Annalen der Chemie 330. page 163) is obtained by the action of excess nitric acid on anthracene suspended in glacial acetic acid. excellent for displaying
 EMI1.2
 



   Example 11.



   40 parts nitroanthrone, 134 parts caustic soda, 16 # 5 parts chilli nitrate, 32 parts lime. G4 parts of sodium bisulfite liquor, neutralized with 28 parts of sodium hydroxide 35 Bé and 581 parts of water
 EMI1.3
 

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

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT70646D 1913-11-22 1914-10-08 Process for the preparation of alizarin. AT70646B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE70646X 1913-11-22

Publications (1)

Publication Number Publication Date
AT70646B true AT70646B (en) 1915-12-10

Family

ID=5635513

Family Applications (1)

Application Number Title Priority Date Filing Date
AT70646D AT70646B (en) 1913-11-22 1914-10-08 Process for the preparation of alizarin.

Country Status (1)

Country Link
AT (1) AT70646B (en)

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