Document Type and Number:
Japanese Patent JPS6121165
Kind Code:
B2
Abstract:
Iron contained in phosphoric acid solution is reduced from the trivalent to the bivalent oxidation stage. To this end, red phosphorus is used as the reductant and the reduction is effected in the presence of copper.
Inventors:
KURAUSU SHUREETSUTAA
KURAUSU REERU
KURAUSU REERU
Application Number:
JP19460581A
Publication Date:
May 26, 1986
Filing Date:
December 04, 1981
Export Citation:
Assignee:
HOECHST AG
International Classes:
C01G49/00; C01B25/238; C01B25/26; C01B25/37; C01G43/00; C22B60/02