DE81206C - - Google Patents
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- Publication number
- DE81206C DE81206C DENDAT81206D DE81206DA DE81206C DE 81206 C DE81206 C DE 81206C DE NDAT81206 D DENDAT81206 D DE NDAT81206D DE 81206D A DE81206D A DE 81206DA DE 81206 C DE81206 C DE 81206C
- Authority
- DE
- Germany
- Prior art keywords
- water
- dianisidine
- mixture
- weight
- parts
- Prior art date
- Legal status (The legal status 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 status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- NUIURNJTPRWVAP-UHFFFAOYSA-N Tolidine Chemical compound C1=C(N)C(C)=CC(C=2C=C(C)C(N)=CC=2)=C1 NUIURNJTPRWVAP-UHFFFAOYSA-N 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- JRBJSXQPQWSCCF-UHFFFAOYSA-N 3,3'-Dimethoxybenzidine Chemical compound C1=C(N)C(OC)=CC(C=2C=C(OC)C(N)=CC=2)=C1 JRBJSXQPQWSCCF-UHFFFAOYSA-N 0.000 claims 1
- 239000003518 caustics Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- ZNYPFGRLOVXIFH-UHFFFAOYSA-N naphthalen-2-ol;sodium Chemical compound [Na].C1=CC=CC2=CC(O)=CC=C21 ZNYPFGRLOVXIFH-UHFFFAOYSA-N 0.000 description 1
- 150000004005 nitrosamines Chemical class 0.000 description 1
- XKLJHFLUAHKGGU-UHFFFAOYSA-N nitrous amide Chemical compound ON=N XKLJHFLUAHKGGU-UHFFFAOYSA-N 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Coloring (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
von deren Salzen.of their salts.
Das in der Patentschrift Nr. 81202 beschriebene Verfahren zur Darstellung von Nitrosaminen aus Diazo- und Tetrazoverbindungen primärer Basen läfst sich, wie sich gezeigt hat, auch auf das o-Tolidin, Diamidostilben und das ο-Dianisidin anwenden.The method for preparing nitrosamines described in patent specification No. 81202 From diazo and tetrazo compounds of primary bases, as has been shown, can also be resolved the o-tolidine, diamidostilbene and the ο-dianisidine use.
Beispiel für die Ueberführung der Tetrazoverbindungen in Dinitrosamine: 10 Gewichtstheile einer 25 procentigen Lösung von Dimethoxytetrazodiphenylchlorid (aus ο - Dianisidin) werden in ein Gemisch von 20 Gewichtstheilen Natronhydrat und 20 Gewichtstheilen Wasser eingetragen. Man fügt hierauf 1 5 Gewichtstheile Natronhydrat hinzu und erhitzt das Gemisch auf freiem Feuer unter Rühren, bis eine mit Wasser verdünnte Probe mit ß-Naphtolnatrium keinen Farbstoff mehr giebt. Dieser Punkt pflegt einzutreten, sobald die Temperatur der Schmelze auf 140 bis 1500C. gestiegen ist.Example of the conversion of the tetrazo compounds into dinitrosamines: 10 parts by weight of a 25 percent solution of dimethoxytetrazodiphenyl chloride (from ο - dianisidine) are added to a mixture of 20 parts by weight of sodium hydrate and 20 parts by weight of water. 15 parts by weight of sodium hydrate are then added, and the mixture is heated over the fire with stirring until a sample of β-naphthol sodium, diluted with water, no longer gives any color. This point tends to enter as soon as the temperature of the melt is increased to 140 to 150 0C.
Die Aufarbeitung wird in der Weise vorgenommen, dafs man die auf unter 1000C. abgekühlte Schmelze, aus welcher das Nitrosamin ausgeschieden ist, in der erforderlichen Menge heifsen Wassers löst und die Lösung erkalten läfst, wobei das Natronsalz des Dimethoxydiphenyldinitrosamins auskrystallisirt.The work-up is carried out in such a way to the DAF to below 100 0 C. cooled melt from which the nitrosamine has been eliminated, in the required amount of water and dissolves torrid läfst cool the solution, wherein the sodium salt of Dimethoxydiphenyldinitrosamins auskrystallisirt.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE81206C true DE81206C (en) |
Family
ID=353706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT81206D Active DE81206C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE81206C (en) |
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0
- DE DENDAT81206D patent/DE81206C/de active Active
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