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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The EC50(48h) for Daphnia magna was determined to be 39 mg/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
39 mg/L

Additional information

An acute toxicity test was conducted with Daphnia magna (Safepharm Laboratories, 2007) according to OECD Guideline 202 using a static design. Nominal exposure concentrations were 1.0, 1.8, 3.2, 5.6, 10, 18, 32, 56 and 100 mg/L. The test concentrations were prepared by diluting a saturated solution prepared from an initial test material dispersion at 1000 mg/L. Based on nominal test concentrations the 48-hour EC50 was determined to be 39 mg/L.

Supporting study:

An acute toxicity test was conducted with Daphnia magna (BASF AG 1995) according to OECD Guideline 202 using a static design. Nominal exposure concentrations were 12.5, 25, 50 and 100 mg/L. The analytical recovery after after 0 hours was 31.8 - 38.4 % in all analysed test solutions and after 48 hours below 4%. No effects were observed up to the highest concentration tested. The 48-hour EC50 value for immobilization is therefore > 100 mg/L of the nominal concentration.