CH127934A - Process for the preparation of a solid diazo salt. - Google Patents
Process for the preparation of a solid diazo salt.Info
- Publication number
- CH127934A CH127934A CH127934DA CH127934A CH 127934 A CH127934 A CH 127934A CH 127934D A CH127934D A CH 127934DA CH 127934 A CH127934 A CH 127934A
- Authority
- CH
- Switzerland
- Prior art keywords
- diazo salt
- preparation
- solid
- solid diazo
- salt
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines festen Diazosalzes. Es wurde gefunden, dass man durch Umsetzung von Diazosalzlösungen mit freier p-Chlorbenzolsulfosäure oder einem ihrer Salze weisse oder gefärbte feste Diazosalze erhält, die sich durch eine gute Abscheid- barkeit bei genügender Löslichkeit und gute Beständigkeit auszeichnen.
Zum Beispiel eignen sich für das Verfahren Lösungen der Salze von dianotierten Nitranilinen, Chlor nitranilinen, Dichloranilinen, Chlor- und Nitrotoluidinen, Nitroaminophenolalkyläthern, sowie ortho-Aminophenolaryläthern.
Die neuen so erhaltenen festen Diazosalze sind wertvolle Produkte für die Zwecke der Färberei und Druckerei. Unter Umständen ist es zweckmässig, ihnen geeignete Verdün nungsmittel und Färbereihilfsprodukte zuzu setzen.
Vorliegendes Patent bezieht sich auf ein Verfahren zur Darstellung eines festen Diazo- salzes durch Umsetzung einer Diazosalz- lösung des 5-1\Titro-2-amino-l-anisols mit einem p-chlorbeiizolsulfosauren Salz oder auch mit freier p-Chlorbenzolsulfosäure. Das so erhaltene feste Diazosalz stellt ein bräunliches und in Wasser lösliches Pulver dar.
<I>Beispiel:</I> Eine Diazolösung, hergestellt aus 252 Teilen 5-Nitro-2-amino-l-anisol, 750 Teilen 15 o/oiger Salzsäure und 263 Teilen einer 40 /oigen Natriumnitritlösung, wird unter Kühlung mit 1420 Teilen einer etwa<B>60'</B> warmen 25 o/oigen Lösung von p-chlorbenzol- sulfosaurem Natrium vermischt. Wenn die Umsetzung beendet ist, wird das ausge schiedene Diazosalz abfiltriert und getrocknet.
Process for the preparation of a solid diazo salt. It has been found that reacting diazo salt solutions with free p-chlorobenzenesulfonic acid or one of its salts gives white or colored solid diazo salts which are distinguished by good separability with sufficient solubility and good stability.
For example, solutions of the salts of dianotized nitranilines, chloronitranilines, dichloroanilines, chloro- and nitrotoluidines, nitroaminophenol alkyl ethers and ortho-aminophenol aryl ethers are suitable for the process.
The new solid diazo salts obtained in this way are valuable products for the purposes of dyeing and printing. It may be useful to add suitable diluents and dyeing auxiliaries to them.
The present patent relates to a process for the preparation of a solid diazo salt by reacting a diazo salt solution of 5-1 \ titro-2-amino-1-anisole with a p-chlorobeiizolesulfonic acid salt or with free p-chlorobenzenesulfonic acid. The solid diazo salt obtained in this way is a brownish powder which is soluble in water.
<I> Example: </I> A diazo solution, prepared from 252 parts of 5-nitro-2-amino-1-anisole, 750 parts of 15% hydrochloric acid and 263 parts of a 40% sodium nitrite solution, is added with 1420 parts with cooling an approximately <B> 60 '</B> warm 25% solution of sodium p-chlorobenzenesulfonate. When the reaction has ended, the diazo salt which has separated out is filtered off and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE127934X | 1926-02-12 | ||
CH126405T | 1927-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH127934A true CH127934A (en) | 1928-09-17 |
Family
ID=25710659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH127934D CH127934A (en) | 1926-02-12 | 1927-02-11 | Process for the preparation of a solid diazo salt. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH127934A (en) |
-
1927
- 1927-02-11 CH CH127934D patent/CH127934A/en unknown
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