Removal of iron impurities from aromatic carboxylic acids

Details Removal of iron impurities from aromatic carboxylic acids Removal of iron impurities from aromatic carboxylic acids

1974-04-03

1976-06-22

Patten, James A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260515R, 260525, C07C 5142

Patent

active

039651606

ABSTRACT:
A process for removing iron contamination of aromatic carboxylic acids by oxidizing an aqueous solution of the ammonium salt of the acid to form insoluble iron compounds, separating the insoluble compounds, and converting the acid salt to free acid.

REFERENCES:
patent: 3243456 (1966-03-01), Caldwell et al.
patent: 3833677 (1974-09-01), Gelbein et al.
Hajek et al. Coll. Czech. Chem. Commun., vol. 36 (1971) pp. 84-91.
Sherif Ind. Eng. Chem. Prod. Res. Devel. vol. 9, no. 3 (1970) pp. 408-412.

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