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Environmental fate & pathways

Biodegradation in soil

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NTA acid is readily biodegradable. In Annex IX of Regulation (EC) No 1907/2006, it is laid down that the study on soil simulation testing does not need to be conducted if the substance is readily biodegradable.

Nevertheless, there are data from the analog salt Na3NTA available which demonstrate that NTA readily decomposed by soil microorganisms under aerobic or anaerobic conditions [Tabatabai and Bremner, 1975].