CH201515A - Process for the preparation of a solid diazonium salt. - Google Patents

Process for the preparation of a solid diazonium salt.

Info

Publication number
CH201515A
CH201515A CH201515DA CH201515A CH 201515 A CH201515 A CH 201515A CH 201515D A CH201515D A CH 201515DA CH 201515 A CH201515 A CH 201515A
Authority
CH
Switzerland
Prior art keywords
diazonium salt
solid
preparation
ethylsulfuric acid
deposited
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 CH201515A publication Critical patent/CH201515A/en

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

Description

  

  Verfahren zur Herstellung eines festen     Diazoniumsalzes.       Gegenstand des vorliegenden Zusatz  patentes ist ein Verfahren zur Herstellung  eines festen     Diazoniumsalzes,    welches da  durch gekennzeichnet ist, dass man aus einer       äthylschwefelsauren        Diazolösung    von 1  Amino-2-(4'-chlor-phenogy)-5-chlorbenzol das       äthylsehwefelsaure        Diazoniumsalz    in fester  Form abscheidet.  



  <I>Beispiel:</I>  100     Gewichtsteile        1-Amino-2-(4'-chlor-          phenogy)-5-chlorbenzol    werden fein gemah  len     und    bei zirka 20   C in 450 Gewichtsteile       Äthylschwefelsäure    von 33,6 %     Reingehalt          eingetragen.    Nach einstündigem     Nachrühren     werden 72     Gewichtsteile        40gewichtsprozen-          tige        Natriumnitritlösung    bei 15     bis    20   C  schnell unter die Oberfläche     einfliessen    ge  lassen.

   Nach erfolgter     Diazotierung    wird mit  1000 Gewichtsteilen Wasser verdünnt und       filtriert.    In diese     Diazolösung    werden 450 Ge  wichtsteile     Ammoniumsulfat    eingetragen und    dabei auf 0 bis 5   C abgekühlt. Das     äthyl-          schwefelsaure        Diazoniumsalz    scheidet sich  ab, es     wird    filtriert und bei niedriger     Tem-          peratur        getrocknet.     



  Das erhaltene     Diazoniumsalz    stellt     eile     kristallines Pulver dar. Es besitzt eine gute  Haltbarkeit und     ist    leicht löslich. Durch Ver  mischen mit den gebräuchlichen Färberei  hilfsmitteln, wie wasserfreiem Natriumsulfat  oder     teilentwässertem        Aluminiumsulfat    usw.,  kann es auf handelsübliche Form eingestellt  werden.



  Process for the preparation of a solid diazonium salt. The subject of the present additional patent is a process for the production of a solid diazonium salt, which is characterized in that from an ethylsulfuric acid diazo solution of 1 amino-2- (4'-chlorophenogy) -5-chlorobenzene the ethylsulfuric acid diazonium salt in solid form separates.



  <I> Example: </I> 100 parts by weight of 1-amino-2- (4'-chlorophenogy) -5-chlorobenzene are finely ground and added to 450 parts by weight of 33.6% pure ethylsulfuric acid at around 20 C. After stirring for one hour, 72 parts by weight of 40% by weight sodium nitrite solution are allowed to flow rapidly under the surface at 15 to 20 ° C.

   After the diazotization has taken place, it is diluted with 1000 parts by weight of water and filtered. 450 parts by weight of ammonium sulfate are added to this diazo solution and the mixture is cooled to 0 to 5 ° C. The ethylsulfuric acid diazonium salt separates out, it is filtered and dried at low temperature.



  The diazonium salt obtained is a crystalline powder. It has a good shelf life and is easily soluble. By mixing it with the usual dyeing auxiliaries, such as anhydrous sodium sulfate or partially dehydrated aluminum sulfate, etc., it can be adjusted to the commercially available form.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines festen Diazoniumsalzes, dadurch gekennzeichnet, dass man aus einer äthylschwefelsauren Di- a.zolösung von 1-Amino-2-(4'-chlor-phenogy)- 5-chlorbenzol das äthylschwefelsaure Di- azoniumsalz in fester Form abscheidet. Das so erhaltene Diazoniumsalz stellt ein kristallines Pulver dar. PATENT CLAIM: Process for the production of a solid diazonium salt, characterized in that the ethylsulfuric acid diazonium salt is deposited in solid form from an ethylsulfuric acid di-a.zolösung of 1-amino-2- (4'-chlorophenogy) -5-chlorobenzene . The diazonium salt thus obtained is a crystalline powder. Es besitzt eine gute Haltbarkeit und ist leicht löslich. Durch Ver mischen mit den gebräuchlichen Färberei hilfsmitteln, wie wasserfreiem Natriumsulfat oder teilentwässertem Aluminiumsulfat usw., kann es auf handelsübliche Form eingestellt werden. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, daB man das Diazoniumsalz durch Aussalzen und Abkühlen abscheidet. It has a good shelf life and is easily soluble. By mixing it with the usual dyeing auxiliaries, such as anhydrous sodium sulfate or partially dehydrated aluminum sulfate, etc., it can be adjusted to the commercially available form. SUBClaim: Process according to claim, characterized in that the diazonium salt is deposited by salting out and cooling.
CH201515D 1936-03-10 1937-03-08 Process for the preparation of a solid diazonium salt. CH201515A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE201516X 1936-03-10
DE201517X 1936-03-10
DE201515X 1936-03-10
DE201514X 1936-03-10
CH199458T 1937-03-08

Publications (1)

Publication Number Publication Date
CH201515A true CH201515A (en) 1938-11-30

Family

ID=27509566

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201515D CH201515A (en) 1936-03-10 1937-03-08 Process for the preparation of a solid diazonium salt.

Country Status (1)

Country Link
CH (1) CH201515A (en)

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