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Short-term toxicity to aquatic invertebrates

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Description of key information

The acute toxicity of the test item to the freshwater invertebrate Daphnia magna has been investigated and gave a 48-Hour EL50 value of 6.0 mg/L loading rate WAF with 95% confidence limits of 5.4 – 6.7 mg/L loading rate WAF. The Lowest Observed Effect Loading rate at 48 hours was considered to be 10 mg/L loading rate WAF. The No Observed Effect Loading rate at 48 hours was 3.2 mg/L loading rate WAF.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
6 mg/L

Additional information

The acute toxicity (inhibition of mobility) of the test item for a duration of 48 hours was assessed according to the OECD testing guideline 202.

Daphnia magna were exposed under semi-static conditions to the following loading rates: 1.0, 3.2, 10, 32 and 100 mg/L. The toxic effect measured during the assay was the inhibition of mobility after 48 hours of exposure to the test item.

The loading rate causing 50% effect (EL50) and the No Observed Effect Loading Rate (NOELR) were: EL50-48h = 6 mg/L and NOELR = 3.2 mg/L