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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

The NOEC for growth rate was 100 mg/L PDTA-H4. Stoichiometric conversion from  the PDTA (free acid) to the ammonium iron(III) salt gives a NOEC of 123 mg/L PDTA-FeNH4. 

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Additional information

One long-term fish study, valid without restrictions, is available for PDTA-H4 (CAS 1939 -36 -2). The juvenile growth study was performed with Cyprinus carpio for a period of 28 days under semi-static conditions at neutral pH. The NOEC for growth rate was 100 mg/L PDTA-H4. Stoichiometric conversion from the PDTA (free acid) to the ammonium iron(III) salt gives a NOEC of 123 mg/L PDTA-FeNH4.