VERFAHREN ZUR HERSTELLUNG VON 1,5- DINITRONAPHTHALEN

VERFAHREN ZUR HERSTELLUNG VON 1,5- DINITRONAPHTHALEN

The invention is directed to a process for the production of 1,5-dinitronaphthalene wherein a) naphthalene is nitrated by nitric acid in the absence of sulfuric acid at temperatures of from 30 - 80 DEG C, wherein the nitric acid has a concentration of from 72 to 87 wt.-%, and b) the reaction mixture...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MALIN, ALEXANDER SERGEEVITCH, VOLKOVA, SOFIA BORISOVNA, SCHAL, HANS-PETER, POPKOVA, VERA YAKOVELEVNA, LASKIN, BORIS MIKHAYLOVITCH
Format: Patent
Sprache:ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention is directed to a process for the production of 1,5-dinitronaphthalene wherein a) naphthalene is nitrated by nitric acid in the absence of sulfuric acid at temperatures of from 30 - 80 DEG C, wherein the nitric acid has a concentration of from 72 to 87 wt.-%, and b) the reaction mixture obtained in step a) is filtrated at temperatures of from 5 to 20 DEG C and the solid precipitate obtained is washed with water, and c) 1,5-dinitronaphthalene is isolated from the washed precipitate obtained in step b) by washing with acetone.