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Biodegradation in water and sediment: simulation tests

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In accordance with column 2 of REACH Annex IX and Annex XI, section 1.1.2 Use of existing data, water and sediment simulation testing does not need to be conducted as FeNa-EDDHA has no high potential for adsorption to sediment based on the calculated Koc of 0.12 (estimated with the Kow method, KOCWIN v2.00). Together with its high water solubility (≥ 15.0 g/100g < 20.3 g/100g) the substance is expected to be very mobile in the aqueous phase and will not adsorb to sediment and soil. In addition, it could be shown in read across studies with Fe-EDDHMA-Na and Fe-EDDHMA-K that the substance is subject to photolytical degradation. In conclusion, is can be expected that FeNaEDDHA will be rapidly degraded photolytically. Therefore, no further water/sediment simulation testing is needed to assess whether the substance is persistent in the environment or not.

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