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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

In the acute toxicity study in Daphnia magna the obtained acute EC50 value was > 100 mg/L  and the NOEC was >=100 mg/L for sodium ethylenesulphonate.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
100 mg/L

Additional information

A study was performed to assess the acute toxicity of sodium vinylsulphonate to Daphnia magna under static conditions. The study was conducted in accordance with OECD Guideline 202 and EU method C.2. Groups of twenty, 1st instar Daphnia (less than 24 hours old) were exposed for 48 hours to one concentration of sodium vinylsulphonate dissolved in water. The incidence of immobilisation was recorded for the test and control group at 24 hours and at 48 hours and the following values were determined for 100% sodium ethylenesulphonate: EC50 (48h) >100 mg/L; NOEC (48h) >= 100 mg/L.

All results are expressed in terms of nominal concentration since measured levels remained near nominal throughout the study (96% of nominal at 0 hours and 89% of nominal at 48 hours : average, 93%).