Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Acute studies for all three trophic levels are available for the test substance.

The 96-hour LC50 value with fish (Danio rerio) was found to be 6.72 mg/L. The 48-hour EC50 value with daphnids was 9.1 mg/L. The ErC50 value after 72 hours in a test with freshwater algae Pseudokirchnerella subcapitata was 2.7 mg/L and the ErC10 value was 0.61 mg/L. The freshwater alga therefore represents the most sensitive species with regard to acute exposure to the substance. The hazard assessment is based on the effect levels of the algal study and the PNECs aqua will be derived from the ErC50 value of 2.7 mg/L.

A valid respiration inhibition test is not available. The toxicity control in the valid study on ready biodegradability showed no inhibition of microorganisms at a concentration of 2.6 mg/L, which can be seen as the NOEC for microbial inhibition.