Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Short-term aquatic toxicity:

Reliable short-term toxicity tests for the registered substance are available for fish, algae and for daphnia.

Two acute fish studies are available. In the key study the acute toxicity of the test substance to Danio rerio exposed under semi-static conditions for 96h was assessed according to the OECD 203 Guideline. Fish were exposed to a series of test solutions renewed every day throughout the test period. Test item concentrations were determined at each observation time on fresh and old solutions: as chemical analysis of test samples taken on fresh and old solutions indicated that measured concentrations of the test item did not remain within 80-120% of the nominal concentrations and were not maintained over a 24h test period (i.e. deviation >20%), the exposure concentrations were based on the geometric mean of measured concentrations. LC50 was determined at 0.87 mg/L.

In the two available acute daphnia study, Daphnia Magna were exposed for 48h in a static system. The EC50 of the key study was 19.9 mg/L (Dr. Elendt-Schneider 1991)).

In the one available algae study, the 96h-ErC50 for growth rate was 4.9 mg/L

 

Long-term aquatic toxicity:

Long-term toxicity data for algae is available with an ErC10 (72h) of 1.9 mg/L.

According to Annex I of this regulation, the chemical safety assessment triggers further action when the substance or the preparation meets the criteria for classification as dangerous according to Directive 67/548/EEC or Directive 1999/45/EC or is assessed to be a PBT or vPvB. The hazard assessment of the substance reveals that the substance is a not a PBT or vPvB substance, and the safety assessment did not show further indications of that the substance may constitute a risk to the environment. Therefore, long-term toxicity studies for fish and invertebrates are not provided.

 

Toxicity to microorganisms:

A reliable study assessing the toxicity of the registered substance to microorganisms is available. The EC20 was determined to be 625 mg/l.

Additional information