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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

Two acceptable studies with EDTA salts or complexes have been performed, examining different end-points (vegatative vigour and seedling emergence) in different plant species. In the 21d veg vigour study (Evangelou et al., 2006) a true NOEC could be established, while in the 14d seedling emergence test (Geebelen et al., 2002) no effect was observed at the highest tested dose. Recalculation of the NOEC from EDTA-Na2H2 to EDTA-Mn(NH4)2 will give a NOEC of 97.5 mg/kg soil dw.

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for terrestrial plants:
97.5 mg/kg soil dw

Additional information

The hazard assessment of EDTA-Mn(NH4)2 reveals neither a need to classify the substance as dangerous to the environment, nor is it a PBT or vPvB substance. The substance is expected to have a low potential for adsorption based on its ionic structure under environmental relevant pH conditions and its low log Kow , the low log Kow also indicates that the substance will not be bioaccumulative. There are no further indications that the substance may be hazardous to the environment.