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Environmental fate & pathways

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EDTA is resistant to hydrolysis.

Photolytic degradation is practically only relevant for the Fe(III)EDTA complex and has been shown in surface waters. It is depending on pH and irradiation; in summer photodegradation rates will be higher and mainly when pH is <= 7.

Further abiotic degradation processes as reaction with OH-radicals or single oxygen have (compared to the direct photolysis) very low reaction constants and are of no environmental significance.