Organic compounds

Details Organic compounds Organic compounds

1975-12-01

1977-03-08

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 100

Patent

active

040112489

ABSTRACT:
The present invention concerns a novel process for the purification of 1-nitroanthraquinone containing dinitroanthraquinone as impurity which comprises selectively converting the dinitroanthraquinone to an amino derivative by treatment of the mixture with ammonia, converting the resulting amino derivative to acid addition salt form, and separating the acid addition salt form of the amino derivative from the 1-nitroanthraquinone on the basis of their different polarities.

REFERENCES:
patent: 3786073 (1974-01-01), Frey et al.
patent: 3798244 (1974-03-01), Mueller et al.
patent: 3868395 (1975-02-01), Bantel et al.
patent: 3904659 (1975-09-01), Bantel et al.
patent: 3931251 (1976-01-01), Vogel et al.

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