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Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Fish

In a static test system a 96h-LC50 of > 1000 mg/L was determined on rainbow trout (Oncorhynchus mykiss) related to nominal concentration. This value lies far above the water solubility and the measured concentrations. Since the test solution was not filtered and undissolved substance was observed in all test vessels the value is considered as reliable and reflects a worst case situation. Despite it can not be excluded that the intake by ingestion of the substance took place, no effects were observed. The test was conducted according to the OECD Guideline 203 (Fish, Acute Toxicity Test).

Daphnia

The chronic toxicity of the substance to Daphnia magna was investigated in a semi-static test. The study was conducted in accordance with Council Regulation (EC) No 440/2008, Method C.20 'Daphnia magna Reproduction Test'', which equals in all relevant parts to the OECD Test guideline 211 (Daphnia magna Reproduction Test). After 21 days of exposure a NOEC(Reproduction) of >=1 mg/L (nominal) was determined. No toxic effects against daphnia were observed at a limit test concentration of nominally 1 mg/L. The measured concentration was < 0.0334 mg/L, which reflects the maximum water solubility under exposure conditions.

As no effects were observed in this long-term test at the limit of the water solubility a short-term test on daphnia could be waived.

Alga

According to OECD guideline 201 ' Alga, Growth Inhibition Test' the acute toxicity of the substance to alga (Desmodesmus subspicatus) was tested. No toxic effects against algae were observed at a limit test concentration of 100 mg/L (nominal), corresponding to a measured concentration of < 0.0334 mg/L, which reflects the maximum water solubility under exposure conditions. The 72h-NOEC was reported as >= 100mg/L, and the 72h-EC50 was given as > 100 mg/L.

Microorganisms

To assess the toxicity of the substance to microorganisms a study was conducted according to the OECD Guideline 209. The substance showed no respiration inhibition of activated sludge at the highest concentration of 1000 mg/L. The 3h-EC10 and the 3h-EC50 are higher than 1000 mg/L. The effect values relate to nominal concentration, since no analytical monitoring was performed.