Preparation of aminopolycarboxylate-ferric solutions with improv

Details Preparation of aminopolycarboxylate-ferric solutions with improv Preparation of aminopolycarboxylate-ferric solutions with improv

1997-07-08

1999-05-04

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C07F 1502

Patent

active

059004991

ABSTRACT:
A process for producing a ferric aminopolycarboxylic acid chelate with improved long term stability is disclosed. The process involves heating a mixture of iron oxide, ammonia and aminopolycarboxylic acid chelant at an elevated temperature for a sufficient time to improve the stability of the formed chelate.

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patent: 4364871 (1982-12-01), Svatek et al.
patent: 4438040 (1984-03-01), Svatek et al.
patent: 5077037 (1991-12-01), Wallace
patent: 5110965 (1992-05-01), Thunberg et al.

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