Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Selenastrum capricornutum: EC50 (72hr), growth rate: 840mg/L, EC10 (72hr), growth rate: 190mg/L

Scenedesmus subspicatus: EC10 (72hr), growth rate: 612mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
840 mg/L
EC10 or NOEC for freshwater algae:
190 mg/L

Additional information

In a guideline study for which full experimental details are available, the 72hr EC50 of 2-(2-(2-butoxyethoxy)ethoxy)ethanol in Selenastrum capricornutum was established to be 840mg/l based on growth rate inhibition. A NOEC of 100mg/l was established and the EC10 based on growth rate was 190mg/l.

In a study for which key experimental details are available, the 72hr EC50 of 2-(2-(2-butoxyethoxy)ethoxy)ethanol in Scenedesmus subspicatus was established to be >612.6mg/l, the maximum dose tested. A NOEC of 62.5mg/l was established and the EC10 based on growth rate was 612.6mg/l.