CH153696A - Process for the preparation of 3.4.6-trichloro-1-aminobenzene-2-sulfonic acid. - Google Patents
Process for the preparation of 3.4.6-trichloro-1-aminobenzene-2-sulfonic acid.Info
- Publication number
- CH153696A CH153696A CH153696DA CH153696A CH 153696 A CH153696 A CH 153696A CH 153696D A CH153696D A CH 153696DA CH 153696 A CH153696 A CH 153696A
- Authority
- CH
- Switzerland
- Prior art keywords
- trichloro
- acid
- preparation
- aminobenzene
- sulfonic acid
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung von 3.4.6-Trichlor-l-amino-benzol-2-sulfosäure. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung von 3.4. 6-Trichlor- 1-amino-benzol-2-sulfosäure, welches dadurch gekennzeichnet ist, dass man 3.4.6-Trichlor- 1-amino-benzol mit molekularen Mengen halo- gerisLiffonsäure, in Gegenwart eines Verdün nungsmittels und unter Ausschluss von jegli cher Feuchtigkeit, behandelt. Die so erhaltene neue Sulfosäure soll Verwendung finden zur Darstellung von Farbstoffen.
<I>Beispiel:</I> <B>196,5</B> Gewichtsteile 3.4.6-Trichlor-l- amino-benzol werden in zirka<B>700</B> Gewichts teilen Tetrachlorkohlenstoff gelöst. Unter kräftigem Rühren und guter Kühlung tropfen dazu<B>116,5</B> Gewichtsteile Chlorsulfonsäure; man rührt einige Zeit nach, ersetzt den ab- destillierten Tetrachlorkohlenstoff durch tech nisches Cblortoluol und erhitzt langsam auf <B>160- 170 0 C.</B> Apparatur und sonstige Arbeits- bedingungen sind dieselben wie im Beispiel des Hauptpatentes angegeben.
Die 3.4.6-Trichlor-l-amino-benzol-2-sulio- säure ist nach dem Absaugen und Trocknen ein farbloses Pulver, das als Natronsalz aus Wasser umkristallisiert werden kann und eine in Wasser schwerlösliche Diazoverbindung ergibt.
Process for the preparation of 3.4.6-trichloro-1-aminobenzene-2-sulfonic acid. The subject of this additional patent is a method for the representation of 3.4. 6-trichloro-1-aminobenzene-2-sulfonic acid, which is characterized in that 3.4.6-trichloro-1-aminobenzene is mixed with molecular amounts of halogerisLiffonic acid, in the presence of a diluent and with the exclusion of any Moisture, treated. The new sulfonic acid obtained in this way is said to be used for the preparation of dyes.
<I> Example: </I> <B> 196.5 </B> parts by weight of 3.4.6-trichloro-1-amino-benzene are dissolved in about <B> 700 </B> parts by weight of carbon tetrachloride. With vigorous stirring and good cooling, <B> 116.5 </B> parts by weight of chlorosulfonic acid are added dropwise; the mixture is stirred for a while, the distilled carbon tetrachloride is replaced by technical carbon toluene and slowly heated to 160-170 ° C. Apparatus and other working conditions are the same as those given in the example of the main patent.
The 3.4.6-trichloro-1-aminobenzene-2-sulioic acid is a colorless powder after suction and drying, which can be recrystallized from water as a sodium salt and results in a diazo compound that is sparingly soluble in water.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE153696X | 1929-10-24 | ||
CH151675T | 1930-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH153696A true CH153696A (en) | 1932-03-31 |
Family
ID=25715853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH153696D CH153696A (en) | 1929-10-24 | 1930-10-23 | Process for the preparation of 3.4.6-trichloro-1-aminobenzene-2-sulfonic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH153696A (en) |
-
1930
- 1930-10-23 CH CH153696D patent/CH153696A/en unknown
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