CH176220A - Process for producing a diazo compound in solid form. - Google Patents

Process for producing a diazo compound in solid form.

Info

Publication number
CH176220A
CH176220A CH176220DA CH176220A CH 176220 A CH176220 A CH 176220A CH 176220D A CH176220D A CH 176220DA CH 176220 A CH176220 A CH 176220A
Authority
CH
Switzerland
Prior art keywords
solid form
diazonium
diazo compound
diazo
tin
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH176220A publication Critical patent/CH176220A/en

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

Description

  

  Verfahren zur Herstellung einer     Diazoverbindung    in fester Form.    Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Herstellung  einer     Diazoverbindung    in fester Form, wel  ches dadurch gekennzeichnet ist, dass man       2.6-Dichlor-1.4-diaminobenzol    durch Be  handlung mit der zur     Diazotierung        einer          Aminogruppe    nötigen Menge Salzsäure und  salpetriger Säure einseitig     diazotiert    und  dann mittelst     Zinntetrachlorid    das     Diazonium-          zinnchloriddoppelsalz    in fester Form ab  scheidet.  



  Das neue     Diazosalz    soll insbesondere .für  die     Eisfarbenbereitung    Verwendung finden.  <I>Beispiel:</I>  177 Teile     2.6-Dichlor-1.4-diaminobenzol     werden in 270 Teilen     32,

  1o%iger    Salzsäure  und 3500 Teilen Wasser gelöst     bezw.    sus  pendiert und bei 10-15o C mit einer Lö  sung von 72 Teilen     Natriumnitrit    in 300  Teilen Wasser     diazotiert.    Die     Diazolösung     wird mit einer Lösung von 140 Teilen Zinn-         tetrachlorid    wasserfrei in Wasser versetzt  und die     Abscheidung    des     Diazoniumzinn-          doppelsalzes    durch Zusatz von     Natriumchlorid     vervollständigt. Dann wird filtriert und wie  üblich fertig gemacht.  



  Das erhaltene schwach bräunliche     Diazo-          salz    besitzt eine sehr gute Haltbarkeit. Es  kann durch Vermischen mit den üblichen       färberischen        Hilfsmitteln,    wie wasserfreiem  Natriumsulfat oder teilentwässertem Alu  miniumsulfat usw., auf handelsübliche Form  eingestellt werden.



  Process for producing a diazo compound in solid form. The subject of the present Zusatzpa tentes is a process for the production of a diazo compound in solid form, which is characterized in that 2,6-dichloro-1,4-diaminobenzene is diazotized on one side by treatment with the amount of hydrochloric acid and nitrous acid necessary to diazotize an amino group and then The diazonium tin chloride double salt is deposited in solid form by means of tin tetrachloride.



  The new diazo salt is to be used in particular for the preparation of ice color. <I> Example: </I> 177 parts of 2.6-dichloro-1.4-diaminobenzene are in 270 parts 32,

  1o% hydrochloric acid and 3500 parts of water dissolved or. suspended and diazotized at 10-15o C with a solution of 72 parts of sodium nitrite in 300 parts of water. A solution of 140 parts of anhydrous tin tetrachloride in water is added to the diazo solution and the deposition of the diazonium tin double salt is completed by adding sodium chloride. Then it is filtered and made ready as usual.



  The slightly brownish diazo salt obtained has a very good shelf life. It can be adjusted to the commercially available form by mixing it with the usual dyeing auxiliaries such as anhydrous sodium sulfate or partially dehydrated aluminum sulfate, etc.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung einer Diazo- verbindung in fester Form, dadurch gekenn zeichnet, dass man 2.6-Dichlor-1.4-diamino- benzol durch Behandlung mit der zur Diazo- tierung einer Aminogruppe nötigen Menge Salzsäure und salpetriger Säure einseitig diazotiert und dann mittelst Zinntetrachlorid das Diazoniumzinnchloriddoppelsalz in fester Form abscheidet. PATENT CLAIM: Process for the production of a diazo compound in solid form, characterized in that 2,6-dichloro-1,4-diamino-benzene is diazotized on one side by treatment with the amount of hydrochloric acid and nitrous acid necessary for diazoating an amino group and then using tin tetrachloride the diazonium tin chloride double salt separates in solid form. Das erhaltene schwach bräunliche Diazo- salz besitzt eine sehr gute Haltbarkeit. Es kann durch Vermischen mit den üblichen färberischen Hilfsmitteln, wie wasserfreiem Natriumsulfat oder teilentwässertem Alumi- iiiumsulfat usw., auf handelsübliche Form eingestellt werden. UNTERANSPRUCH: Verfahren gernä(o, Patentanspruch, dadurch gekennzeichnet, dass inan die Abscheidung des Diazoniumzinnchloriddoppelsalzes durch Zusatz von Natriumchlorid vervollständigt. The slightly brownish diazo salt obtained has a very good shelf life. It can be adjusted to the commercially available form by mixing with the usual dyeing auxiliaries such as anhydrous sodium sulfate or partially dehydrated aluminum sulfate, etc. SUBSTANTIAL CLAIM: Method according to claim, characterized in that the deposition of the diazonium tin chloride double salt is completed by adding sodium chloride.
CH176220D 1932-05-21 1933-05-18 Process for producing a diazo compound in solid form. CH176220A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176220X 1932-05-21
CH170764T 1933-05-18

Publications (1)

Publication Number Publication Date
CH176220A true CH176220A (en) 1935-03-31

Family

ID=25718975

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176220D CH176220A (en) 1932-05-21 1933-05-18 Process for producing a diazo compound in solid form.

Country Status (1)

Country Link
CH (1) CH176220A (en)

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