Process for preparing 1-nitro-anthraquinone

Details Process for preparing 1-nitro-anthraquinone Process for preparing 1-nitro-anthraquinone

1974-08-27

1976-06-01

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4968

Patent

active

039609030

ABSTRACT:
1-Nitro-anthraquinone is separated from an anthraquinone nitration mixture in concentrated nitric acid by adding to the nitration mixture sulpholan and separating off the insoluble 1-nitro-anthraquinone. The quantity of sulpholan added is such that the mixture contains 10-90% by weight nitric acid and from 90-10% by weight sulpholan.

REFERENCES:
patent: 1845281 (1932-02-01), Jaeger

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