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EDTA is universally used as a food preservative(therefore, itâs generally recognized as safe) and weâre exposed to arather large amount (15-50 mg) every day. EDTA, by binding andneutralizing the action of iron and heavy metals, prevents oxida-tion and rancidity in prepared and processed foods and oils.
The amount of EDTA used in food products, then, has been set to be far below what would be a toxic level. EDTA is known as a persistent organic pollutant. It resists degradation from biological, chemical, and photolytic processes.