Chemische Fabrik Budenheim Kg

David Kuemmet

Ruediger Wissemborski

Gunnar Buehler

Rainer Schnee

Joachim Markmann

Rainer Wallwitz

Iron(III) orthophosphate of the general formula FePO&#xd7;nHO (n&#x2266;2.5), prepared by a process in which iron(II)-, iron(III)- or mixed iron(II, III) compounds selected from among hydroxides, oxides, oxidehydroxides, oxide hydrates, carbonates and hydroxidecarbonates are reacted with phosphoric acid having a concentration in the range from 5% to 50%, any iron(II) present after the reaction is converted into iron(III) by addition of an oxidant and solid iron(III) orthophosphate is separated off from the reaction mixture.

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Budenheim, Germany

David Kuemmet