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
Links
- 239000012954 diazonium Substances 0.000 title claims description 10
- 150000001989 diazonium salts Chemical class 0.000 title claims description 7
- 239000007787 solid Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Substances ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 3
- -1 ethylsulfuric acid diazonium salt Chemical class 0.000 claims description 3
- KIWBPDUYBMNFTB-UHFFFAOYSA-N Ethyl hydrogen sulfate Chemical compound CCOS(O)(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-N 0.000 claims description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 238000004043 dyeing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000005185 salting out Methods 0.000 claims 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 125000000664 diazo group Chemical class [N-]=[N+]=[*] 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- 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)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201517X | 1936-03-10 | ||
| DE201515X | 1936-03-10 | ||
| DE201514X | 1936-03-10 | ||
| DE201516X | 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) |
-
1937
- 1937-03-08 CH CH201515D patent/CH201515A/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH201515A (en) | Process for the preparation of a solid diazonium salt. | |
| DE655047C (en) | Process for the preparation of aryldiazonium salts | |
| CH176218A (en) | Process for producing a diazo compound in solid form. | |
| CH199458A (en) | Process for the preparation of a solid diazonium salt. | |
| CH201516A (en) | Process for the preparation of a solid diazonium salt. | |
| CH209641A (en) | Process for the preparation of a solid diazonium salt. | |
| CH140318A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH217973A (en) | Process for the preparation of an azo dye. | |
| CH189310A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH209639A (en) | Process for the preparation of a solid diazonium salt. | |
| CH137100A (en) | Process for producing a solid diazoazo compound. | |
| CH176221A (en) | Process for producing a diazo compound in solid form. | |
| CH140314A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH137099A (en) | Process for producing a solid diazoazo compound. | |
| CH140327A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH187606A (en) | Process for the preparation of a chromable yellow azo dye. | |
| CH140312A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH140304A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH140323A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH140322A (en) | Process for the preparation of a strong, durable diazo compound. | |
| CH179671A (en) | Process for the preparation of a monoazo dye. | |
| CH137101A (en) | Process for producing a solid diazoazo compound. | |
| CH134940A (en) | Process for producing a solid diazoazo compound. | |
| CH187605A (en) | Process for the preparation of a chromable yellow azo dye. | |
| CH192023A (en) | Process for producing a diazoamino compound. |