Process for the preparation of a stable salt-free iron chelate f

Details Process for the preparation of a stable salt-free iron chelate f Process for the preparation of a stable salt-free iron chelate f

1992-10-06

1995-12-05

Geist, Gary L.

Compositions

Co, s, negative element, or acid, bindant containing

252191, 252184, 4235766, C09K 332, C01B 2106, C01B 1702, B01J 2000

Patent

active

054726336

ABSTRACT:
A stable, salt-free iron chelate for use in aqueous alkaline systems is prepared by contacting iron oxide with an aqueous mixture of from 30 to 45 mole percent trisodium HEDTA and from 55 to 70 mole percent EDTA, heating the mixture to dissolve the iron, and adjusting the pH to from 7 to 10 with base.

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patent: 5110965 (1992-05-01), Thunberg et al.
patent: 5149460 (1992-09-01), Olson et al.

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