Process for the production of 1,5-dinitronaphthalene

Details Process for the production of 1,5-dinitronaphthalene Process for the production of 1,5-dinitronaphthalene

2006-01-31

2006-01-31

Parsa, J. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S928000, C568S930000

Reexamination Certificate

active

06992230

ABSTRACT:
The invention is directed to a process for the production of 1,5-dinitronaphthalene wherein naphthalene is nitrated by nitric acid in the absence of sulfuric acid at temperatures of from 30 to 80° C., wherein the nitric acid has a concentration of from 72 to 87 wt.-%, the reaction mixture obtained is filtered at temperatures of from 5 to 20° C. and the solid precipitate obtained is washed with water, and 1,5-dinitronaphthalene is isolated from the washed precipitate by washing with acetone.

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