CH137101A - Process for producing a solid diazoazo compound. - Google Patents
Process for producing a solid diazoazo compound.Info
- Publication number
- CH137101A CH137101A CH137101DA CH137101A CH 137101 A CH137101 A CH 137101A CH 137101D A CH137101D A CH 137101DA CH 137101 A CH137101 A CH 137101A
- Authority
- CH
- Switzerland
- Prior art keywords
- solid
- compound
- sulfate
- diazoazo
- diazo
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Thiazole And Isothizaole Compounds (AREA)
Description
Verfahren zur Herstellung einer festen Diazoazoverbindung. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung einer festen Dia- zoazoverbindung, das dadurch gekennzeichnet ist, dass man aus einer Lösung der Diazo- verbindung des Aminoazokörpers Paranitro- benzol - azo - 2 - amino -1 .
4 - dimethoxybenzol durch Zusatz eines Alkalisulfates ein festes Diazoniumsulfat der Formel:
EMI0001.0016
abscheidet. Die so erhaltene feste Diazoazoverbindung ist ein braunes Pulver, das sich in Wasser mit bräunlicher Farbe löst. Sie besitzt bei guter Löslichkeit eine gute Haltbarkeit.
<I>Beispiel Z:</I> Zu einer aus 302 Teilen des p-Amino- azokörpers Paraiiitrobenzol-azo-2-amino-1 . 4- dimethoxybenzol hergestellten Diazonium- chloridlösung werden 250 Teile Schwefel- säure von 78% und Natriumsulfat bis zur vollständigen Abscheidung zugegeben.
Das alsdann abgeschiedene Diazoniumsulfat wird bei niedriger Temperatur abfiltriert, noch feucht mit teilentwässertem Aluminiumsulfat vermischt und getrocknet. <I>Beispiel 2</I> Eine aus 302 Teilen Paranitrobenzol- azo-2-amino-1 .4-dimethogybenzol, 70 Teilen Natriumnitrit und 3020 Teilen 95 %igei- Schwefelsäure bereitete Diazotierungsmasse wird auf etwa 10,
000 Teile Eiswasser unter Zusatz von etwa 1600 Teilen wasserfreiem Na triumsulfat gegossen. Das sich abscheidende Diazoniumsulfat wird abfiltriert und vorsich tig getrocknet.
Process for producing a solid diazoazo compound. The present patent relates to a process for the production of a solid diazoazo compound, which is characterized in that from a solution of the diazo compound of the aminoazo body, paranitrobenzene - azo - 2 - amino -1.
4 - dimethoxybenzene by adding an alkali sulfate a solid diazonium sulfate of the formula:
EMI0001.0016
separates. The solid diazoazo compound thus obtained is a brown powder which dissolves in water with a brownish color. It has a good shelf life with good solubility.
<I> Example Z: </I> For one of 302 parts of the p-amino-azo body paraiitrobenzene-azo-2-amino-1. Diazonium chloride solution prepared from 4-dimethoxybenzene is added to 250 parts of 78% sulfuric acid and sodium sulfate until it is completely separated.
The then deposited diazonium sulfate is filtered off at a low temperature, mixed with partially dehydrated aluminum sulfate while still moist and dried. <I> Example 2 </I> A diazotizing mass prepared from 302 parts of paranitrobenzene-azo-2-amino-1,4-dimethogybenzene, 70 parts of sodium nitrite and 3020 parts of 95% sulfuric acid is made to about 10
Poured 000 parts of ice water with the addition of about 1600 parts of anhydrous Na trium sulfate. The diazonium sulfate which separates out is filtered off and carefully dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE137101X | 1926-10-05 | ||
CH134940T | 1927-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH137101A true CH137101A (en) | 1929-12-15 |
Family
ID=25712391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH137101D CH137101A (en) | 1926-10-05 | 1927-10-03 | Process for producing a solid diazoazo compound. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH137101A (en) |
-
1927
- 1927-10-03 CH CH137101D patent/CH137101A/en unknown
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