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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

96-hour LC50 (rainbow trout) > 3.2 mg/L. NOEC = 3.2 mg/L.

The results of the acute toxicity study indicate that the EC50 for immobilisation of Daphnia magna exposed to S-205 is greater than the maximum solubility of S-205 in Daphnia synthetic medium, under the conditions of the test.

The NOEC, from the sub-acute study, for adult Daphnia immobilisation was calculated to be 100 mg/l nominal, indicating there was no significant difference between the numbers of immobile Daphnia at 100 mg/l and the control.

Under the conditions of the study, it was found that for algae the ECr50 = >1000 mg/l and the NOEC = 250 mg/l

The outcome of the microorganism study is that EC50 (3h) = > 3.2 mg/l