CH176221A - Process for producing a diazo compound in solid form. - Google Patents

Process for producing a diazo compound in solid form.

Info

Publication number
CH176221A
CH176221A CH176221DA CH176221A CH 176221 A CH176221 A CH 176221A CH 176221D A CH176221D A CH 176221DA CH 176221 A CH176221 A CH 176221A
Authority
CH
Switzerland
Prior art keywords
solid form
diazo compound
producing
diazo
parts
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 CH176221A publication Critical patent/CH176221A/en

Links

Landscapes

  • 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, welches       d-idurch    gekennzeichnet ist, dass man 2.5  Dichlor-l.4-diaminobenzol durch Behandlung       rnit    der zur Dianotierung einer     Aminogruppe     nötigen     12enge    Salzsäure und salpetriger       Säure        einseitig    dianotiert und dann mittelst       Natriumclrlorid    das     Diazoniumchlorid    in fester  Form abscheidet.  



  Das neue     Diazosalz    soll insbesondere für  die     Eisfarbenbereitung    Verwendung finden.         Beispiel:          177    Teile     2.5-Dichlor-1.4-diaminobenzol     werden in 270 Teilen 32,1      /oiger    Salzsäure  und 3500 Teilen Wasser gelöst beziehungs  weise suspendiert und bei<B>10-151</B> C mit  einer Lösung von 72 Teilen     Natriumnitrit     in 150 Teilen Wasser dianotiert. Nach Be  endigung der Dianotierung wird filtriert und  das Filtrat mit 820 Teilen     Natriumchlorid       versetzt.

   Das kristallin ausgefallene     Dia-          zoniumchlorid    wird     abfiltriert    und bei etwa  400 C getrocknet.  



  Das erhaltene gelblich weisse     Diazosalz     besitzt eine sehr gute Haltbarkeit und ist  leicht löslich. Es kann durch Vermischen  mit den üblichen     färberischen    Hilfsmitteln,  wie wasserfreiem Natriumsulfat oder     teilent-          wässertere    Aluminiumsulfat usw., auf handels  übliche Form eingestellt werden.



  Process for producing a diazo compound in solid form. The subject matter of the present additional patent is a process for the production of a diazo compound in solid form, which is characterized by the fact that 2,5 dichloro-1,4-diaminobenzene is dianotated on one side by treatment with the sufficient amount of hydrochloric acid and nitrous acid necessary to dianotate an amino group and then the diazonium chloride is separated out in solid form by means of sodium chloride.



  The new diazo salt is to be used in particular for the preparation of ice color. Example: 177 parts of 2,5-dichloro-1,4-diaminobenzene are dissolved or suspended in 270 parts of 32.1 /% hydrochloric acid and 3500 parts of water and mixed with a solution of 72 parts of sodium nitrite in at <B> 10-151 </B> C 150 parts of water dianotized. After the end of the dianotation, the mixture is filtered and 820 parts of sodium chloride are added to the filtrate.

   The crystalline dia- zonium chloride is filtered off and dried at about 400C.



  The yellowish white diazo salt obtained has a very good shelf life and is easily soluble. 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 2.5-Dichlor-1.4-diamirro- benzol durch Behandlung mit der zur Diano tierung einer Aminogruppe nötigen Menge Salzsäure und salpetriger Säure einseitig dianotiert und dann mittelst Natriumchlorid das Diazoniumchlorid in fester Form ab scheidet. Das erhaltene gelblich weisse Diazosalz besitzt eine sehr gute Haltbarkeit und ist leicht löslich. PATENT CLAIM: Process for the production of a diazo compound in solid form, characterized in that 2,5-dichloro-1,4-diamirrobenzene is dianotized on one side by treatment with the amount of hydrochloric acid and nitrous acid necessary for the dianation of an amino group and then the sodium chloride is used Diazonium chloride separates in solid form. The yellowish white diazo salt obtained has a very good shelf life and is easily soluble. Es kann durch Vermischen mit den üblichen färberischen Hilfsmitteln, wie wasserfreiem Natriumsulfat oder teilent- wässertem Aluminiumsulfat usw., auf han delsübliche Form eingestellt werden. It can be adjusted to the commercially available form by mixing with the usual dyeing auxiliaries, such as anhydrous sodium sulfate or partially drained aluminum sulfate, etc.
CH176221D 1932-05-21 1933-05-18 Process for producing a diazo compound in solid form. CH176221A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176221X 1932-05-21
CH170764T 1933-05-18

Publications (1)

Publication Number Publication Date
CH176221A true CH176221A (en) 1935-03-31

Family

ID=25718976

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176221D CH176221A (en) 1932-05-21 1933-05-18 Process for producing a diazo compound in solid form.

Country Status (1)

Country Link
CH (1) CH176221A (en)

Similar Documents

Publication Publication Date Title
CH176221A (en) Process for producing a diazo compound in solid form.
CH176217A (en) Process for producing a diazo compound in solid form.
CH176220A (en) Process for producing a diazo compound in solid form.
DE586355C (en) Process for the preparation of diazo compounds in solid form
CH176218A (en) Process for producing a diazo compound in solid form.
DE614541C (en) Process for the preparation of disazo dyes
CH176222A (en) Process for producing a diazo compound in solid form.
CH176219A (en) Process for producing a diazo compound in solid form.
DE647667C (en) Process for the preparation of aryldiazonium salts
CH201516A (en) Process for the preparation of a solid diazonium salt.
CH121789A (en) Process for the production of a diazo salt preparation for dyeing and printing.
CH132205A (en) Process for producing a solid diazoazo compound.
CH147033A (en) Process for the production of a preparation suitable for preparing a solution of a nitrosodiazo compound of the diphenylamine series.
CH132194A (en) Process for producing a solid diazoazo compound.
CH132212A (en) Process for producing a solid diazoazo compound.
CH170768A (en) Process for the preparation of a substantive copper-containing azo dye.
CH123647A (en) Process for the production of a diazo salt preparation for dyeing and printing.
CH140318A (en) Process for the preparation of a strong, durable diazo compound.
CH132190A (en) Process for producing a solid diazoazo compound.
CH132196A (en) Process for producing a solid diazoazo compound.
CH132204A (en) Process for producing a solid diazoazo compound.
CH137099A (en) Process for producing a solid diazoazo compound.
CH132189A (en) Process for producing a solid diazoazo compound.
CH175876A (en) Process for the preparation of a dry diazonium salt.
CH132188A (en) Process for producing a solid diazoazo compound.