CH176221A - Process for producing a diazo compound in solid form. - Google Patents
Process for producing a diazo compound in solid form.Info
- Publication number
- CH176221A CH176221A CH176221DA CH176221A CH 176221 A CH176221 A CH 176221A CH 176221D A CH176221D A CH 176221DA CH 176221 A CH176221 A CH 176221A
- Authority
- CH
- Switzerland
- Prior art keywords
- solid form
- diazo compound
- producing
- diazo
- parts
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung einer Diazoverbindung in fester Form. Gegenstand des vorliegenden Zusatzpa tentes ist ein Verfahren zur Herstellung einer Diazoverbindung in fester Form, welches d-idurch gekennzeichnet ist, dass man 2.5 Dichlor-l.4-diaminobenzol durch Behandlung rnit der zur Dianotierung einer Aminogruppe nötigen 12enge Salzsäure und salpetriger Säure einseitig dianotiert und dann mittelst Natriumclrlorid das Diazoniumchlorid in fester Form abscheidet.
Das neue Diazosalz soll insbesondere für die Eisfarbenbereitung Verwendung finden. Beispiel: 177 Teile 2.5-Dichlor-1.4-diaminobenzol werden in 270 Teilen 32,1 /oiger Salzsäure und 3500 Teilen Wasser gelöst beziehungs weise suspendiert und bei<B>10-151</B> C mit einer Lösung von 72 Teilen Natriumnitrit in 150 Teilen Wasser dianotiert. Nach Be endigung der Dianotierung wird filtriert und das Filtrat mit 820 Teilen Natriumchlorid versetzt.
Das kristallin ausgefallene Dia- zoniumchlorid wird abfiltriert und bei etwa 400 C getrocknet.
Das erhaltene gelblich weisse Diazosalz besitzt eine sehr gute Haltbarkeit und ist leicht löslich. Es kann durch Vermischen mit den üblichen färberischen Hilfsmitteln, wie wasserfreiem Natriumsulfat oder teilent- wässertere Aluminiumsulfat usw., auf handels übliche Form eingestellt werden.
Process for producing a diazo compound in solid form. The subject matter of the present additional patent is a process for the production of a diazo compound in solid form, which is characterized by the fact that 2,5 dichloro-1,4-diaminobenzene is dianotated on one side by treatment with the sufficient amount of hydrochloric acid and nitrous acid necessary to dianotate an amino group and then the diazonium chloride is separated out in solid form by means of sodium chloride.
The new diazo salt is to be used in particular for the preparation of ice color. Example: 177 parts of 2,5-dichloro-1,4-diaminobenzene are dissolved or suspended in 270 parts of 32.1 /% hydrochloric acid and 3500 parts of water and mixed with a solution of 72 parts of sodium nitrite in at <B> 10-151 </B> C 150 parts of water dianotized. After the end of the dianotation, the mixture is filtered and 820 parts of sodium chloride are added to the filtrate.
The crystalline dia- zonium chloride is filtered off and dried at about 400C.
The yellowish white diazo salt obtained has a very good shelf life and is easily soluble. It can be adjusted to the commercially available form by mixing it with the usual dyeing auxiliaries such as anhydrous sodium sulfate or partially dehydrated aluminum sulfate, etc.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE176221X | 1932-05-21 | ||
CH170764T | 1933-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH176221A true CH176221A (en) | 1935-03-31 |
Family
ID=25718976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH176221D CH176221A (en) | 1932-05-21 | 1933-05-18 | Process for producing a diazo compound in solid form. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH176221A (en) |
-
1933
- 1933-05-18 CH CH176221D patent/CH176221A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH176221A (en) | Process for producing a diazo compound in solid form. | |
CH176217A (en) | Process for producing a diazo compound in solid form. | |
CH176220A (en) | Process for producing a diazo compound in solid form. | |
DE586355C (en) | Process for the preparation of diazo compounds in solid form | |
CH176218A (en) | Process for producing a diazo compound in solid form. | |
DE614541C (en) | Process for the preparation of disazo dyes | |
CH176222A (en) | Process for producing a diazo compound in solid form. | |
CH176219A (en) | Process for producing a diazo compound in solid form. | |
DE647667C (en) | Process for the preparation of aryldiazonium salts | |
CH201516A (en) | Process for the preparation of a solid diazonium salt. | |
CH121789A (en) | Process for the production of a diazo salt preparation for dyeing and printing. | |
CH132205A (en) | Process for producing a solid diazoazo compound. | |
CH147033A (en) | Process for the production of a preparation suitable for preparing a solution of a nitrosodiazo compound of the diphenylamine series. | |
CH132194A (en) | Process for producing a solid diazoazo compound. | |
CH132212A (en) | Process for producing a solid diazoazo compound. | |
CH170768A (en) | Process for the preparation of a substantive copper-containing azo dye. | |
CH123647A (en) | Process for the production of a diazo salt preparation for dyeing and printing. | |
CH140318A (en) | Process for the preparation of a strong, durable diazo compound. | |
CH132190A (en) | Process for producing a solid diazoazo compound. | |
CH132196A (en) | Process for producing a solid diazoazo compound. | |
CH132204A (en) | Process for producing a solid diazoazo compound. | |
CH137099A (en) | Process for producing a solid diazoazo compound. | |
CH132189A (en) | Process for producing a solid diazoazo compound. | |
CH175876A (en) | Process for the preparation of a dry diazonium salt. | |
CH132188A (en) | Process for producing a solid diazoazo compound. |